Merge tag 'at91-cleanup' of git://github.com/at91linux/linux-at91 into next/cleanup

From Nicolas Ferre:
AT91: Move to Common Clock Framework and sama5d3 implementation
This is the first step to move AT91 to the CCF.
- core CCF and drivers for most of the clocks
- use of CCF for sama5d3 (100% DT-based)

* tag 'at91-cleanup' of git://github.com/at91linux/linux-at91: (22 commits)
  ARM: at91/dt: remove old clk material
  ARM: at91: move sama5d3 SoC to common clk
  ARM: at91/dt: define sama5d3xek's main clk frequency
  ARM: at91/dt: define sama5d3 clocks
  ARM: at91: prepare common clk transition for sama5d3 SoC
  ARM: at91: prepare sama5 dt boards transition to common clk
  ARM: at91: add new compatible strings for pmc driver
  ARM: at91: move pit timer to common clk framework
  dt: binding: add at91 clks dt bindings documentation
  clk: at91: add PMC smd clock
  clk: at91: add PMC usb clock
  clk: at91: add PMC utmi clock
  clk: at91: add PMC programmable clocks
  clk: at91: add PMC peripheral clocks
  clk: at91: add PMC system clocks
  clk: at91: add PMC master clock
  clk: at91: add PMC pll clocks
  clk: at91: add PMC main clock
  clk: at91: add PMC macro file for dt definitions
  clk: at91: add PMC base support
  ...
Signed-off-by: Olof Johansson <olof@lixom.net>

Documentation/devicetree/bindings/clock/at91-clock.txt

+Device Tree Clock bindings for arch-at91
+
+This binding uses the common clock binding[1].
+
+[1] Documentation/devicetree/bindings/clock/clock-bindings.txt
+
+Required properties:
+- compatible : shall be one of the following:
+	"atmel,at91rm9200-pmc" or
+	"atmel,at91sam9g45-pmc" or
+	"atmel,at91sam9n12-pmc" or
+	"atmel,at91sam9x5-pmc" or
+	"atmel,sama5d3-pmc":
+		at91 PMC (Power Management Controller)
+		All at91 specific clocks (clocks defined below) must be child
+		node of the PMC node.
+
+	"atmel,at91rm9200-clk-main":
+		at91 main oscillator
+
+	"atmel,at91rm9200-clk-master" or
+	"atmel,at91sam9x5-clk-master":
+		at91 master clock
+
+	"atmel,at91sam9x5-clk-peripheral" or
+	"atmel,at91rm9200-clk-peripheral":
+		at91 peripheral clocks
+
+	"atmel,at91rm9200-clk-pll" or
+	"atmel,at91sam9g45-clk-pll" or
+	"atmel,at91sam9g20-clk-pllb" or
+	"atmel,sama5d3-clk-pll":
+		at91 pll clocks
+
+	"atmel,at91sam9x5-clk-plldiv":
+		at91 plla divisor
+
+	"atmel,at91rm9200-clk-programmable" or
+	"atmel,at91sam9g45-clk-programmable" or
+	"atmel,at91sam9x5-clk-programmable":
+		at91 programmable clocks
+
+	"atmel,at91sam9x5-clk-smd":
+		at91 SMD (Soft Modem) clock
+
+	"atmel,at91rm9200-clk-system":
+		at91 system clocks
+
+	"atmel,at91rm9200-clk-usb" or
+	"atmel,at91sam9x5-clk-usb" or
+	"atmel,at91sam9n12-clk-usb":
+		at91 usb clock
+
+	"atmel,at91sam9x5-clk-utmi":
+		at91 utmi clock
+
+Required properties for PMC node:
+- reg : defines the IO memory reserved for the PMC.
+- #size-cells : shall be 0 (reg is used to encode clk id).
+- #address-cells : shall be 1 (reg is used to encode clk id).
+- interrupts : shall be set to PMC interrupt line.
+- interrupt-controller : tell that the PMC is an interrupt controller.
+- #interrupt-cells : must be set to 1. The first cell encodes the interrupt id,
+	and reflect the bit position in the PMC_ER/DR/SR registers.
+	You can use the dt macros defined in dt-bindings/clk/at91.h.
+	0 (AT91_PMC_MOSCS) -> main oscillator ready
+	1 (AT91_PMC_LOCKA) -> PLL A ready
+	2 (AT91_PMC_LOCKB) -> PLL B ready
+	3 (AT91_PMC_MCKRDY) -> master clock ready
+	6 (AT91_PMC_LOCKU) -> UTMI PLL clock ready
+	8 .. 15 (AT91_PMC_PCKRDY(id)) -> programmable clock ready
+	16 (AT91_PMC_MOSCSELS) -> main oscillator selected
+	17 (AT91_PMC_MOSCRCS) -> RC main oscillator stabilized
+	18 (AT91_PMC_CFDEV) -> clock failure detected
+
+For example:
+	pmc: pmc@fffffc00 {
+		compatible = "atmel,sama5d3-pmc";
+		interrupts = <1 4 7>;
+		interrupt-controller;
+		#interrupt-cells = <2>;
+		#size-cells = <0>;
+		#address-cells = <1>;
+
+		/* put at91 clocks here */
+	};
+
+Required properties for main clock:
+- interrupt-parent : must reference the PMC node.
+- interrupts : shall be set to "<0>".
+- #clock-cells : from common clock binding; shall be set to 0.
+- clocks (optional if clock-frequency is provided) : shall be the slow clock
+	phandle. This clock is used to calculate the main clock rate if
+	"clock-frequency" is not provided.
+- clock-frequency : the main oscillator frequency.Prefer the use of
+	"clock-frequency" over automatic clock rate calculation.
+
+For example:
+	main: mainck {
+		compatible = "atmel,at91rm9200-clk-main";
+		interrupt-parent = <&pmc>;
+		interrupts = <0>;
+		#clock-cells = <0>;
+		clocks = <&ck32k>;
+		clock-frequency = <18432000>;
+	};
+
+Required properties for master clock:
+- interrupt-parent : must reference the PMC node.
+- interrupts : shall be set to "<3>".
+- #clock-cells : from common clock binding; shall be set to 0.
+- clocks : shall be the master clock sources (see atmel datasheet) phandles.
+	e.g. "<&ck32k>, <&main>, <&plla>, <&pllb>".
+- atmel,clk-output-range : minimum and maximum clock frequency (two u32
+			   fields).
+	   e.g. output = <0 133000000>; <=> 0 to 133MHz.
+- atmel,clk-divisors : master clock divisors table (four u32 fields).
+		0 <=> reserved value.
+		e.g. divisors = <1 2 4 6>;
+- atmel,master-clk-have-div3-pres : some SoC use the reserved value 7 in the
+				    PRES field as CLOCK_DIV3 (e.g sam9x5).
+
+For example:
+	mck: mck {
+		compatible = "atmel,at91rm9200-clk-master";
+		interrupt-parent = <&pmc>;
+		interrupts = <3>;
+		#clock-cells = <0>;
+		atmel,clk-output-range = <0 133000000>;
+		atmel,clk-divisors = <1 2 4 0>;
+	};
+
+Required properties for peripheral clocks:
+- #size-cells : shall be 0 (reg is used to encode clk id).
+- #address-cells : shall be 1 (reg is used to encode clk id).
+- clocks : shall be the master clock phandle.
+	e.g. clocks = <&mck>;
+- name: device tree node describing a specific system clock.
+	* #clock-cells : from common clock binding; shall be set to 0.
+	* reg: peripheral id. See Atmel's datasheets to get a full
+	  list of peripheral ids.
+	* atmel,clk-output-range : minimum and maximum clock frequency
+	  (two u32 fields). Only valid on at91sam9x5-clk-peripheral
+	  compatible IPs.
+
+For example:
+	periph: periphck {
+		compatible = "atmel,at91sam9x5-clk-peripheral";
+		#size-cells = <0>;
+		#address-cells = <1>;
+		clocks = <&mck>;
+
+		ssc0_clk {
+			#clock-cells = <0>;
+			reg = <2>;
+			atmel,clk-output-range = <0 133000000>;
+		};
+
+		usart0_clk {
+			#clock-cells = <0>;
+			reg = <3>;
+			atmel,clk-output-range = <0 66000000>;
+		};
+	};
+
+
+Required properties for pll clocks:
+- interrupt-parent : must reference the PMC node.
+- interrupts : shall be set to "<1>".
+- #clock-cells : from common clock binding; shall be set to 0.
+- clocks : shall be the main clock phandle.
+- reg : pll id.
+	0 -> PLL A
+	1 -> PLL B
+- atmel,clk-input-range : minimum and maximum source clock frequency (two u32
+			  fields).
+	  e.g. input = <1 32000000>; <=> 1 to 32MHz.
+- #atmel,pll-clk-output-range-cells : number of cells reserved for pll output
+				      range description. Sould be set to 2, 3
+				      or 4.
+	* 1st and 2nd cells represent the frequency range (min-max).
+	* 3rd cell is optional and represents the OUT field value for the given
+	  range.
+	* 4th cell is optional and represents the ICPLL field (PLLICPR
+	  register)
+- atmel,pll-clk-output-ranges : pll output frequency ranges + optional parameter
+				depending on #atmel,pll-output-range-cells
+				property value.
+
+For example:
+	plla: pllack {
+		compatible = "atmel,at91sam9g45-clk-pll";
+		interrupt-parent = <&pmc>;
+		interrupts = <1>;
+		#clock-cells = <0>;
+		clocks = <&main>;
+		reg = <0>;
+		atmel,clk-input-range = <2000000 32000000>;
+		#atmel,pll-clk-output-range-cells = <4>;
+		atmel,pll-clk-output-ranges = <74500000 800000000 0 0
+					       69500000 750000000 1 0
+					       64500000 700000000 2 0
+					       59500000 650000000 3 0
+					       54500000 600000000 0 1
+					       49500000 550000000 1 1
+					       44500000 500000000 2 1
+					       40000000 450000000 3 1>;
+	};
+
+Required properties for plldiv clocks (plldiv = pll / 2):
+- #clock-cells : from common clock binding; shall be set to 0.
+- clocks : shall be the plla clock phandle.
+
+The pll divisor is equal to 2 and cannot be changed.
+
+For example:
+	plladiv: plladivck {
+		compatible = "atmel,at91sam9x5-clk-plldiv";
+		#clock-cells = <0>;
+		clocks = <&plla>;
+	};
+
+Required properties for programmable clocks:
+- interrupt-parent : must reference the PMC node.
+- #size-cells : shall be 0 (reg is used to encode clk id).
+- #address-cells : shall be 1 (reg is used to encode clk id).
+- clocks : shall be the programmable clock source phandles.
+	e.g. clocks = <&clk32k>, <&main>, <&plla>, <&pllb>;
+- name: device tree node describing a specific prog clock.
+	* #clock-cells : from common clock binding; shall be set to 0.
+	* reg : programmable clock id (register offset from  PCKx
+			 register).
+	* interrupts : shall be set to "<(8 + id)>".
+
+For example:
+	prog: progck {
+		compatible = "atmel,at91sam9g45-clk-programmable";
+		#size-cells = <0>;
+		#address-cells = <1>;
+		interrupt-parent = <&pmc>;
+		clocks = <&clk32k>, <&main>, <&plladiv>, <&utmi>, <&mck>;
+
+		prog0 {
+			#clock-cells = <0>;
+			reg = <0>;
+			interrupts = <8>;
+		};
+
+		prog1 {
+			#clock-cells = <0>;
+			reg = <1>;
+			interrupts = <9>;
+		};
+	};
+
+
+Required properties for smd clock:
+- #clock-cells : from common clock binding; shall be set to 0.
+- clocks : shall be the smd clock source phandles.
+	e.g. clocks = <&plladiv>, <&utmi>;
+
+For example:
+	smd: smdck {
+		compatible = "atmel,at91sam9x5-clk-smd";
+		#clock-cells = <0>;
+		clocks = <&plladiv>, <&utmi>;
+	};
+
+Required properties for system clocks:
+- #size-cells : shall be 0 (reg is used to encode clk id).
+- #address-cells : shall be 1 (reg is used to encode clk id).
+- name: device tree node describing a specific system clock.
+	* #clock-cells : from common clock binding; shall be set to 0.
+	* reg: system clock id (bit position in SCER/SCDR/SCSR registers).
+	      See Atmel's datasheet to get a full list of system clock ids.
+
+For example:
+	system: systemck {
+		compatible = "atmel,at91rm9200-clk-system";
+		#address-cells = <1>;
+		#size-cells = <0>;
+
+		ddrck {
+			#clock-cells = <0>;
+			reg = <2>;
+			clocks = <&mck>;
+		};
+
+		uhpck {
+			#clock-cells = <0>;
+			reg = <6>;
+			clocks = <&usb>;
+		};
+
+		udpck {
+			#clock-cells = <0>;
+			reg = <7>;
+			clocks = <&usb>;
+		};
+	};
+
+
+Required properties for usb clock:
+- #clock-cells : from common clock binding; shall be set to 0.
+- clocks : shall be the smd clock source phandles.
+	e.g. clocks = <&pllb>;
+- atmel,clk-divisors (only available for "atmel,at91rm9200-clk-usb"):
+	usb clock divisor table.
+	e.g. divisors = <1 2 4 0>;
+
+For example:
+	usb: usbck {
+		compatible = "atmel,at91sam9x5-clk-usb";
+		#clock-cells = <0>;
+		clocks = <&plladiv>, <&utmi>;
+	};
+
+	usb: usbck {
+		compatible = "atmel,at91rm9200-clk-usb";
+		#clock-cells = <0>;
+		clocks = <&pllb>;
+		atmel,clk-divisors = <1 2 4 0>;
+	};
+
+
+Required properties for utmi clock:
+- interrupt-parent : must reference the PMC node.
+- interrupts : shall be set to "<AT91_PMC_LOCKU IRQ_TYPE_LEVEL_HIGH>".
+- #clock-cells : from common clock binding; shall be set to 0.
+- clocks : shall be the main clock source phandle.
+
+For example:
+	utmi: utmick {
+		compatible = "atmel,at91sam9x5-clk-utmi";
+		interrupt-parent = <&pmc>;
+		interrupts = <AT91_PMC_LOCKU IRQ_TYPE_LEVEL_HIGH>;
+		#clock-cells = <0>;
+		clocks = <&main>;
+	};

arch/arm/boot/dts/sama5d3.dtsi

@@ -13,6 +13,7 @@
 #include <dt-bindings/pinctrl/at91.h>
 #include <dt-bindings/interrupt-controller/irq.h>
 #include <dt-bindings/gpio/gpio.h>
+#include <dt-bindings/clk/at91.h>
 
 / {
 	model = "Atmel SAMA5D3 family SoC";
@@ -56,6 +57,14 @@ memory {
 		reg = <0x20000000 0x8000000>;
 	};
 
+	clocks {
+		adc_op_clk: adc_op_clk{
+			compatible = "fixed-clock";
+			#clock-cells = <0>;
+			clock-frequency = <20000000>;
+		};
+	};
+
 	ahb {
 		compatible = "simple-bus";
 		#address-cells = <1>;
@@ -79,6 +88,8 @@ mmc0: mmc@f0000000 {
 				status = "disabled";
 				#address-cells = <1>;
 				#size-cells = <0>;
+				clocks = <&mci0_clk>;
+				clock-names = "mci_clk";
 			};
 
 			spi0: spi@f0004000 {
@@ -92,6 +103,8 @@ spi0: spi@f0004000 {
 				dma-names = "tx", "rx";
 				pinctrl-names = "default";
 				pinctrl-0 = <&pinctrl_spi0>;
+				clocks = <&spi0_clk>;
+				clock-names = "spi_clk";
 				status = "disabled";
 			};
 
@@ -101,6 +114,8 @@ ssc0: ssc@f0008000 {
 				interrupts = <38 IRQ_TYPE_LEVEL_HIGH 4>;
 				pinctrl-names = "default";
 				pinctrl-0 = <&pinctrl_ssc0_tx &pinctrl_ssc0_rx>;
+				clocks = <&ssc0_clk>;
+				clock-names = "pclk";
 				status = "disabled";
 			};
 
@@ -108,6 +123,8 @@ tcb0: timer@f0010000 {
 				compatible = "atmel,at91sam9x5-tcb";
 				reg = <0xf0010000 0x100>;
 				interrupts = <26 IRQ_TYPE_LEVEL_HIGH 0>;
+				clocks = <&tcb0_clk>;
+				clock-names = "t0_clk";
 			};
 
 			i2c0: i2c@f0014000 {
@@ -121,6 +138,7 @@ i2c0: i2c@f0014000 {
 				pinctrl-0 = <&pinctrl_i2c0>;
 				#address-cells = <1>;
 				#size-cells = <0>;
+				clocks = <&twi0_clk>;
 				status = "disabled";
 			};
 
@@ -135,6 +153,7 @@ i2c1: i2c@f0018000 {
 				pinctrl-0 = <&pinctrl_i2c1>;
 				#address-cells = <1>;
 				#size-cells = <0>;
+				clocks = <&twi1_clk>;
 				status = "disabled";
 			};
 
@@ -144,6 +163,8 @@ usart0: serial@f001c000 {
 				interrupts = <12 IRQ_TYPE_LEVEL_HIGH 5>;
 				pinctrl-names = "default";
 				pinctrl-0 = <&pinctrl_usart0>;
+				clocks = <&usart0_clk>;
+				clock-names = "usart";
 				status = "disabled";
 			};
 
@@ -153,6 +174,8 @@ usart1: serial@f0020000 {
 				interrupts = <13 IRQ_TYPE_LEVEL_HIGH 5>;
 				pinctrl-names = "default";
 				pinctrl-0 = <&pinctrl_usart1>;
+				clocks = <&usart1_clk>;
+				clock-names = "usart";
 				status = "disabled";
 			};
 
@@ -174,6 +197,8 @@ mmc1: mmc@f8000000 {
 				status = "disabled";
 				#address-cells = <1>;
 				#size-cells = <0>;
+				clocks = <&mci1_clk>;
+				clock-names = "mci_clk";
 			};
 
 			spi1: spi@f8008000 {
@@ -187,6 +212,8 @@ spi1: spi@f8008000 {
 				dma-names = "tx", "rx";
 				pinctrl-names = "default";
 				pinctrl-0 = <&pinctrl_spi1>;
+				clocks = <&spi1_clk>;
+				clock-names = "spi_clk";
 				status = "disabled";
 			};
 
@@ -196,6 +223,8 @@ ssc1: ssc@f800c000 {
 				interrupts = <39 IRQ_TYPE_LEVEL_HIGH 4>;
 				pinctrl-names = "default";
 				pinctrl-0 = <&pinctrl_ssc1_tx &pinctrl_ssc1_rx>;
+				clocks = <&ssc1_clk>;
+				clock-names = "pclk";
 				status = "disabled";
 			};
 
@@ -219,6 +248,9 @@ &pinctrl_adc0_ad9
 					&pinctrl_adc0_ad10
 					&pinctrl_adc0_ad11
 					>;
+				clocks = <&adc_clk>,
+					 <&adc_op_clk>;
+				clock-names = "adc_clk", "adc_op_clk";
 				atmel,adc-channel-base = <0x50>;
 				atmel,adc-channels-used = <0xfff>;
 				atmel,adc-drdy-mask = <0x1000000>;
@@ -274,6 +306,7 @@ i2c2: i2c@f801c000 {
 				dma-names = "tx", "rx";
 				#address-cells = <1>;
 				#size-cells = <0>;
+				clocks = <&twi2_clk>;
 				status = "disabled";
 			};
 
@@ -283,6 +316,8 @@ usart2: serial@f8020000 {
 				interrupts = <14 IRQ_TYPE_LEVEL_HIGH 5>;
 				pinctrl-names = "default";
 				pinctrl-0 = <&pinctrl_usart2>;
+				clocks = <&usart2_clk>;
+				clock-names = "usart";
 				status = "disabled";
 			};
 
@@ -292,6 +327,8 @@ usart3: serial@f8024000 {
 				interrupts = <15 IRQ_TYPE_LEVEL_HIGH 5>;
 				pinctrl-names = "default";
 				pinctrl-0 = <&pinctrl_usart3>;
+				clocks = <&usart3_clk>;
+				clock-names = "usart";
 				status = "disabled";
 			};
 
@@ -318,6 +355,8 @@ dma0: dma-controller@ffffe600 {
 				reg = <0xffffe600 0x200>;
 				interrupts = <30 IRQ_TYPE_LEVEL_HIGH 0>;
 				#dma-cells = <2>;
+				clocks = <&dma0_clk>;
+				clock-names = "dma_clk";
 			};
 
 			dma1: dma-controller@ffffe800 {
@@ -325,6 +364,8 @@ dma1: dma-controller@ffffe800 {
 				reg = <0xffffe800 0x200>;
 				interrupts = <31 IRQ_TYPE_LEVEL_HIGH 0>;
 				#dma-cells = <2>;
+				clocks = <&dma1_clk>;
+				clock-names = "dma_clk";
 			};
 
 			ramc0: ramc@ffffea00 {
@@ -338,6 +379,8 @@ dbgu: serial@ffffee00 {
 				interrupts = <2 IRQ_TYPE_LEVEL_HIGH 7>;
 				pinctrl-names = "default";
 				pinctrl-0 = <&pinctrl_dbgu>;
+				clocks = <&dbgu_clk>;
+				clock-names = "usart";
 				status = "disabled";
 			};
 
@@ -626,6 +669,7 @@ pioA: gpio@fffff200 {
 					gpio-controller;
 					interrupt-controller;
 					#interrupt-cells = <2>;
+					clocks = <&pioA_clk>;
 				};
 
 				pioB: gpio@fffff400 {
@@ -636,6 +680,7 @@ pioB: gpio@fffff400 {
 					gpio-controller;
 					interrupt-controller;
 					#interrupt-cells = <2>;
+					clocks = <&pioB_clk>;
 				};
 
 				pioC: gpio@fffff600 {
@@ -646,6 +691,7 @@ pioC: gpio@fffff600 {
 					gpio-controller;
 					interrupt-controller;
 					#interrupt-cells = <2>;
+					clocks = <&pioC_clk>;
 				};
 
 				pioD: gpio@fffff800 {
@@ -656,6 +702,7 @@ pioD: gpio@fffff800 {
 					gpio-controller;
 					interrupt-controller;
 					#interrupt-cells = <2>;
+					clocks = <&pioD_clk>;
 				};
 
 				pioE: gpio@fffffa00 {
@@ -666,12 +713,334 @@ pioE: gpio@fffffa00 {
 					gpio-controller;
 					interrupt-controller;
 					#interrupt-cells = <2>;
+					clocks = <&pioE_clk>;
 				};
 			};
 
 			pmc: pmc@fffffc00 {
-				compatible = "atmel,at91rm9200-pmc";
+				compatible = "atmel,sama5d3-pmc";
 				reg = <0xfffffc00 0x120>;
+				interrupts = <1 IRQ_TYPE_LEVEL_HIGH 7>;
+				interrupt-controller;
+				#address-cells = <1>;
+				#size-cells = <0>;
+				#interrupt-cells = <1>;
+
+				clk32k: slck {
+					compatible = "fixed-clock";
+					#clock-cells = <0>;
+					clock-frequency = <32768>;
+				};
+
+				main: mainck {
+					compatible = "atmel,at91rm9200-clk-main";
+					#clock-cells = <0>;
+					interrupt-parent = <&pmc>;
+					interrupts = <AT91_PMC_MOSCS>;
+					clocks = <&clk32k>;
+				};
+
+				plla: pllack {
+					compatible = "atmel,sama5d3-clk-pll";
+					#clock-cells = <0>;
+					interrupt-parent = <&pmc>;
+					interrupts = <AT91_PMC_LOCKA>;
+					clocks = <&main>;
+					reg = <0>;
+					atmel,clk-input-range = <8000000 50000000>;
+					#atmel,pll-clk-output-range-cells = <4>;
+					atmel,pll-clk-output-ranges = <400000000 1000000000 0 0>;
+				};
+
+				plladiv: plladivck {
+					compatible = "atmel,at91sam9x5-clk-plldiv";
+					#clock-cells = <0>;
+					clocks = <&plla>;
+				};
+
+				utmi: utmick {
+					compatible = "atmel,at91sam9x5-clk-utmi";
+					#clock-cells = <0>;
+					interrupt-parent = <&pmc>;
+					interrupts = <AT91_PMC_LOCKU>;
+					clocks = <&main>;
+				};
+
+				mck: masterck {
+					compatible = "atmel,at91sam9x5-clk-master";
+					#clock-cells = <0>;
+					interrupt-parent = <&pmc>;
+					interrupts = <AT91_PMC_MCKRDY>;
+					clocks = <&clk32k>, <&main>, <&plladiv>, <&utmi>;
+					atmel,clk-output-range = <0 166000000>;
+					atmel,clk-divisors = <1 2 4 3>;
+				};
+
+				usb: usbck {
+					compatible = "atmel,at91sam9x5-clk-usb";
+					#clock-cells = <0>;
+					clocks = <&plladiv>, <&utmi>;
+				};
+
+				prog: progck {
+					compatible = "atmel,at91sam9x5-clk-programmable";
+					#address-cells = <1>;
+					#size-cells = <0>;
+					interrupt-parent = <&pmc>;
+					clocks = <&clk32k>, <&main>, <&plladiv>, <&utmi>, <&mck>;
+
+					prog0: prog0 {
+						#clock-cells = <0>;
+						reg = <0>;
+						interrupts = <AT91_PMC_PCKRDY(0)>;
+					};
+
+					prog1: prog1 {
+						#clock-cells = <0>;
+						reg = <1>;
+						interrupts = <AT91_PMC_PCKRDY(1)>;
+					};
+
+					prog2: prog2 {
+						#clock-cells = <0>;
+						reg = <2>;
+						interrupts = <AT91_PMC_PCKRDY(2)>;
+					};
+				};
+
+				smd: smdclk {
+					compatible = "atmel,at91sam9x5-clk-smd";
+					#clock-cells = <0>;
+					clocks = <&plladiv>, <&utmi>;
+				};
+
+				systemck {
+					compatible = "atmel,at91rm9200-clk-system";
+					#address-cells = <1>;
+					#size-cells = <0>;
+
+					ddrck: ddrck {
+						#clock-cells = <0>;
+						reg = <2>;
+						clocks = <&mck>;
+					};
+
+					smdck: smdck {
+						#clock-cells = <0>;
+						reg = <4>;
+						clocks = <&smd>;
+					};
+
+					uhpck: uhpck {
+						#clock-cells = <0>;
+						reg = <6>;
+						clocks = <&usb>;
+					};
+
+					udpck: udpck {
+						#clock-cells = <0>;
+						reg = <7>;
+						clocks = <&usb>;
+					};
+
+					pck0: pck0 {
+						#clock-cells = <0>;
+						reg = <8>;
+						clocks = <&prog0>;
+					};
+
+					pck1: pck1 {
+						#clock-cells = <0>;
+						reg = <9>;
+						clocks = <&prog1>;
+					};
+
+					pck2: pck2 {
+						#clock-cells = <0>;
+						reg = <10>;
+						clocks = <&prog2>;
+					};
+				};
+
+				periphck {
+					compatible = "atmel,at91sam9x5-clk-peripheral";
+					#address-cells = <1>;
+					#size-cells = <0>;
+					clocks = <&mck>;
+
+					dbgu_clk: dbgu_clk {
+						#clock-cells = <0>;
+						reg = <2>;
+					};
+
+					pioA_clk: pioA_clk {
+						#clock-cells = <0>;
+						reg = <6>;
+					};
+
+					pioB_clk: pioB_clk {
+						#clock-cells = <0>;
+						reg = <7>;
+					};
+
+					pioC_clk: pioC_clk {
+						#clock-cells = <0>;
+						reg = <8>;
+					};
+
+					pioD_clk: pioD_clk {
+						#clock-cells = <0>;
+						reg = <9>;
+					};
+
+					pioE_clk: pioE_clk {
+						#clock-cells = <0>;
+						reg = <10>;
+					};
+
+					usart0_clk: usart0_clk {
+						#clock-cells = <0>;
+						reg = <12>;
+						atmel,clk-output-range = <0 66000000>;
+					};
+
+					usart1_clk: usart1_clk {
+						#clock-cells = <0>;
+						reg = <13>;
+						atmel,clk-output-range = <0 66000000>;
+					};
+
+					usart2_clk: usart2_clk {
+						#clock-cells = <0>;
+						reg = <14>;
+						atmel,clk-output-range = <0 66000000>;
+					};
+
+					usart3_clk: usart3_clk {
+						#clock-cells = <0>;
+						reg = <15>;
+						atmel,clk-output-range = <0 66000000>;
+					};
+
+					twi0_clk: twi0_clk {
+						reg = <18>;
+						#clock-cells = <0>;
+						atmel,clk-output-range = <0 16625000>;
+					};
+
+					twi1_clk: twi1_clk {
+						#clock-cells = <0>;
+						reg = <19>;
+						atmel,clk-output-range = <0 16625000>;
+					};
+
+					twi2_clk: twi2_clk {
+						#clock-cells = <0>;
+						reg = <20>;
+						atmel,clk-output-range = <0 16625000>;
+					};
+
+					mci0_clk: mci0_clk {
+						#clock-cells = <0>;
+						reg = <21>;
+					};
+
+					mci1_clk: mci1_clk {
+						#clock-cells = <0>;
+						reg = <22>;
+					};
+
+					spi0_clk: spi0_clk {
+						#clock-cells = <0>;
+						reg = <24>;
+						atmel,clk-output-range = <0 133000000>;
+					};
+
+					spi1_clk: spi1_clk {
+						#clock-cells = <0>;
+						reg = <25>;
+						atmel,clk-output-range = <0 133000000>;
+					};
+
+					tcb0_clk: tcb0_clk {
+						#clock-cells = <0>;
+						reg = <26>;
+						atmel,clk-output-range = <0 133000000>;
+					};
+
+					pwm_clk: pwm_clk {
+						#clock-cells = <0>;
+						reg = <28>;
+					};
+
+					adc_clk: adc_clk {
+						#clock-cells = <0>;
+						reg = <29>;
+						atmel,clk-output-range = <0 66000000>;
+					};
+
+					dma0_clk: dma0_clk {
+						#clock-cells = <0>;
+						reg = <30>;
+					};
+
+					dma1_clk: dma1_clk {
+						#clock-cells = <0>;
+						reg = <31>;
+					};
+
+					uhphs_clk: uhphs_clk {
+						#clock-cells = <0>;
+						reg = <32>;
+					};
+
+					udphs_clk: udphs_clk {
+						#clock-cells = <0>;
+						reg = <33>;
+					};
+
+					isi_clk: isi_clk {
+						#clock-cells = <0>;
+						reg = <37>;
+					};
+
+					ssc0_clk: ssc0_clk {
+						#clock-cells = <0>;
+						reg = <38>;
+						atmel,clk-output-range = <0 66000000>;
+					};
+
+					ssc1_clk: ssc1_clk {
+						#clock-cells = <0>;
+						reg = <39>;
+						atmel,clk-output-range = <0 66000000>;
+					};
+
+					sha_clk: sha_clk {
+						#clock-cells = <0>;
+						reg = <42>;
+					};
+
+					aes_clk: aes_clk {
+						#clock-cells = <0>;
+						reg = <43>;
+					};
+
+					tdes_clk: tdes_clk {
+						#clock-cells = <0>;
+						reg = <44>;
+					};
+
+					trng_clk: trng_clk {
+						#clock-cells = <0>;
+						reg = <45>;
+					};
+
+					fuse_clk: fuse_clk {
+						#clock-cells = <0>;
+						reg = <48>;
+					};
+				};
 			};
 
 			rstc@fffffe00 {
@@ -683,6 +1052,7 @@ pit: timer@fffffe30 {
 				compatible = "atmel,at91sam9260-pit";
 				reg = <0xfffffe30 0xf>;
 				interrupts = <3 IRQ_TYPE_LEVEL_HIGH 5>;
+				clocks = <&mck>;
 			};
 
 			watchdog@fffffe40 {
@@ -705,6 +1075,8 @@ usb0: gadget@00500000 {
 			reg = <0x00500000 0x100000
 			       0xf8030000 0x4000>;
 			interrupts = <33 IRQ_TYPE_LEVEL_HIGH 2>;
+			clocks = <&udphs_clk>, <&utmi>;
+			clock-names = "pclk", "hclk";
 			status = "disabled";
 
 			ep0 {
@@ -817,6 +1189,9 @@ usb1: ohci@00600000 {
 			compatible = "atmel,at91rm9200-ohci", "usb-ohci";
 			reg = <0x00600000 0x100000>;
 			interrupts = <32 IRQ_TYPE_LEVEL_HIGH 2>;
+			clocks = <&usb>, <&uhphs_clk>, <&udphs_clk>,
+				 <&uhpck>;
+			clock-names = "usb_clk", "ohci_clk", "hclk", "uhpck";
 			status = "disabled";
 		};
 
@@ -824,6 +1199,8 @@ usb2: ehci@00700000 {
 			compatible = "atmel,at91sam9g45-ehci", "usb-ehci";
 			reg = <0x00700000 0x100000>;
 			interrupts = <32 IRQ_TYPE_LEVEL_HIGH 2>;
+			clocks = <&usb>, <&uhphs_clk>, <&uhpck>;
+			clock-names = "usb_clk", "ehci_clk", "uhpck";
 			status = "disabled";
 		};
 

arch/arm/boot/dts/sama5d3_can.dtsi

@@ -32,12 +32,30 @@ pinctrl_can1_rx_tx: can1_rx_tx {
 
 			};
 
+			pmc: pmc@fffffc00 {
+				periphck {
+					can0_clk: can0_clk {
+						#clock-cells = <0>;
+						reg = <40>;
+						atmel,clk-output-range = <0 66000000>;
+					};
+
+					can1_clk: can0_clk {
+						#clock-cells = <0>;
+						reg = <41>;
+						atmel,clk-output-range = <0 66000000>;
+					};
+				};
+			};
+
 			can0: can@f000c000 {
 				compatible = "atmel,at91sam9x5-can";
 				reg = <0xf000c000 0x300>;
 				interrupts = <40 IRQ_TYPE_LEVEL_HIGH 3>;
 				pinctrl-names = "default";
 				pinctrl-0 = <&pinctrl_can0_rx_tx>;
+				clocks = <&can0_clk>;
+				clock-names = "can_clk";
 				status = "disabled";
 			};
 
@@ -47,6 +65,8 @@ can1: can@f8010000 {
 				interrupts = <41 IRQ_TYPE_LEVEL_HIGH 3>;
 				pinctrl-names = "default";
 				pinctrl-0 = <&pinctrl_can1_rx_tx>;
+				clocks = <&can1_clk>;
+				clock-names = "can_clk";
 				status = "disabled";
 			};
 		};

arch/arm/boot/dts/sama5d3_emac.dtsi

@@ -31,12 +31,23 @@ AT91_PIOC 8 AT91_PERIPH_A AT91_PINCTRL_NONE	/* PC8 periph A EMDC, conflicts with
 				};
 			};
 
+			pmc: pmc@fffffc00 {
+				periphck {
+					macb1_clk: macb1_clk {
+						#clock-cells = <0>;
+						reg = <35>;
+					};
+				};
+			};
+
 			macb1: ethernet@f802c000 {
 				compatible = "cdns,at32ap7000-macb", "cdns,macb";
 				reg = <0xf802c000 0x100>;
 				interrupts = <35 IRQ_TYPE_LEVEL_HIGH 3>;
 				pinctrl-names = "default";
 				pinctrl-0 = <&pinctrl_macb1_rmii>;
+				clocks = <&macb1_clk>, <&macb1_clk>;
+				clock-names = "hclk", "pclk";
 				status = "disabled";
 			};
 		};

arch/arm/boot/dts/sama5d3_gmac.dtsi

@@ -64,12 +64,23 @@ AT91_PIOB 17 AT91_PERIPH_A AT91_PINCTRL_NONE	/* PB17 periph A GMDIO */
 				};
 			};
 
+			pmc: pmc@fffffc00 {
+				periphck {
+					macb0_clk: macb0_clk {
+						#clock-cells = <0>;
+						reg = <34>;
+					};
+				};
+			};
+
 			macb0: ethernet@f0028000 {
 				compatible = "cdns,pc302-gem", "cdns,gem";
 				reg = <0xf0028000 0x100>;
 				interrupts = <34 IRQ_TYPE_LEVEL_HIGH 3>;
 				pinctrl-names = "default";
 				pinctrl-0 = <&pinctrl_macb0_data_rgmii &pinctrl_macb0_signal_rgmii>;
+				clocks = <&macb0_clk>, <&macb0_clk>;
+				clock-names = "hclk", "pclk";
 				status = "disabled";
 			};
 		};

arch/arm/boot/dts/sama5d3_lcd.dtsi

@@ -50,6 +50,23 @@ AT91_PIOE 27 AT91_PERIPH_C AT91_PINCTRL_NONE	/* PE27 periph C LCDD22 pin */
 					};
 				};
 			};
+
+			pmc: pmc@fffffc00 {
+				periphck {
+					lcdc_clk: lcdc_clk {
+						#clock-cells = <0>;
+						reg = <36>;
+					};
+				};
+
+				systemck {
+					lcdck: lcdck {
+						#clock-cells = <0>;
+						reg = <3>;
+						clocks = <&mck>;
+					};
+				};
+			};
 		};
 	};
 };

arch/arm/boot/dts/sama5d3_mci2.dtsi

@@ -9,6 +9,7 @@
 
 #include <dt-bindings/pinctrl/at91.h>
 #include <dt-bindings/interrupt-controller/irq.h>
+#include <dt-bindings/clk/at91.h>
 
 / {
 	ahb {
@@ -30,6 +31,15 @@ AT91_PIOC 13 AT91_PERIPH_A AT91_PINCTRL_NONE	/* PC13 periph A MCI2_DA2 with pull
 				};
 			};
 
+			pmc: pmc@fffffc00 {
+				periphck {
+					mci2_clk: mci2_clk {
+						#clock-cells = <0>;
+						reg = <23>;
+					};
+				};
+			};
+
 			mmc2: mmc@f8004000 {
 				compatible = "atmel,hsmci";
 				reg = <0xf8004000 0x600>;
@@ -38,6 +48,8 @@ mmc2: mmc@f8004000 {
 				dma-names = "rxtx";
 				pinctrl-names = "default";
 				pinctrl-0 = <&pinctrl_mmc2_clk_cmd_dat0 &pinctrl_mmc2_dat1_3>;
+				clocks = <&mci2_clk>;
+				clock-names = "mci_clk";
 				status = "disabled";
 				#address-cells = <1>;
 				#size-cells = <0>;

arch/arm/boot/dts/sama5d3_tcb1.dtsi

@@ -9,6 +9,7 @@
 
 #include <dt-bindings/pinctrl/at91.h>
 #include <dt-bindings/interrupt-controller/irq.h>
+#include <dt-bindings/clk/at91.h>
 
 / {
 	aliases {
@@ -17,10 +18,21 @@ aliases {
 
 	ahb {
 		apb {
+			pmc: pmc@fffffc00 {
+				periphck {
+					tcb1_clk: tcb1_clk {
+						#clock-cells = <0>;
+						reg = <27>;
+					};
+				};
+			};
+
 			tcb1: timer@f8014000 {
 				compatible = "atmel,at91sam9x5-tcb";
 				reg = <0xf8014000 0x100>;
 				interrupts = <27 IRQ_TYPE_LEVEL_HIGH 0>;
+				clocks = <&tcb1_clk>;
+				clock-names = "t0_clk";
 			};
 		};
 	};

arch/arm/boot/dts/sama5d3_uart.dtsi

@@ -9,6 +9,7 @@
 
 #include <dt-bindings/pinctrl/at91.h>
 #include <dt-bindings/interrupt-controller/irq.h>
+#include <dt-bindings/clk/at91.h>
 
 / {
 	ahb {
@@ -31,12 +32,30 @@ pinctrl_uart1: uart1-0 {
 				};
 			};
 
+			pmc: pmc@fffffc00 {
+				periphck {
+					uart0_clk: uart0_clk {
+						#clock-cells = <0>;
+						reg = <16>;
+						atmel,clk-output-range = <0 66000000>;
+					};
+
+					uart1_clk: uart1_clk {
+						#clock-cells = <0>;
+						reg = <17>;
+						atmel,clk-output-range = <0 66000000>;
+					};
+				};
+			};
+
 			uart0: serial@f0024000 {
 				compatible = "atmel,at91sam9260-usart";
 				reg = <0xf0024000 0x200>;
 				interrupts = <16 IRQ_TYPE_LEVEL_HIGH 5>;
 				pinctrl-names = "default";
 				pinctrl-0 = <&pinctrl_uart0>;
+				clocks = <&uart0_clk>;
+				clock-names = "usart";
 				status = "disabled";
 			};
 
@@ -46,6 +65,8 @@ uart1: serial@f8028000 {
 				interrupts = <17 IRQ_TYPE_LEVEL_HIGH 5>;
 				pinctrl-names = "default";
 				pinctrl-0 = <&pinctrl_uart1>;
+				clocks = <&uart1_clk>;
+				clock-names = "usart";
 				status = "disabled";
 			};
 		};

arch/arm/boot/dts/sama5d3xcm.dtsi

@@ -18,17 +18,6 @@ memory {
 		reg = <0x20000000 0x20000000>;
 	};
 
-	clocks {
-		#address-cells = <1>;
-		#size-cells = <1>;
-		ranges;
-
-		main_clock: clock@0 {
-			compatible = "atmel,osc", "fixed-clock";
-			clock-frequency = <12000000>;
-		};
-	};
-
 	ahb {
 		apb {
 			spi0: spi@f0004000 {
@@ -38,6 +27,12 @@ spi0: spi@f0004000 {
 			macb0: ethernet@f0028000 {
 				phy-mode = "rgmii";
 			};
+
+			pmc: pmc@fffffc00 {
+				main: mainck {
+					clock-frequency = <12000000>;
+				};
+			};
 		};
 
 		nand0: nand@60000000 {

arch/arm/mach-at91/Kconfig

 if ARCH_AT91
 
+config HAVE_AT91_UTMI
+	bool
+
+config HAVE_AT91_USB_CLK
+	bool
+
 config HAVE_AT91_DBGU0
 	bool
 
 config HAVE_AT91_DBGU1
 	bool
 
+config AT91_USE_OLD_CLK
+	bool
+
 config AT91_PMC_UNIT
 	bool
 	default !ARCH_AT91X40
 
+config COMMON_CLK_AT91
+	bool
+	default AT91_PMC_UNIT && USE_OF && !AT91_USE_OLD_CLK
+	select COMMON_CLK
+
+config OLD_CLK_AT91
+	bool
+	default AT91_PMC_UNIT && AT91_USE_OLD_CLK
+
 config AT91_SAM9_ALT_RESET
 	bool
 	default !ARCH_AT91X40
@@ -21,6 +39,9 @@ config AT91_SAM9G45_RESET
 config AT91_SAM9_TIME
 	bool
 
+config HAVE_AT91_SMD
+	bool
+
 config SOC_AT91SAM9
 	bool
 	select AT91_SAM9_TIME
@@ -65,6 +86,9 @@ config SOC_SAMA5D3
 	select SOC_SAMA5
 	select HAVE_FB_ATMEL
 	select HAVE_AT91_DBGU1
+	select HAVE_AT91_UTMI
+	select HAVE_AT91_SMD
+	select HAVE_AT91_USB_CLK
 	help
 	  Select this if you are using one of Atmel's SAMA5D3 family SoC.
 	  This support covers SAMA5D31, SAMA5D33, SAMA5D34, SAMA5D35.
@@ -78,11 +102,15 @@ config SOC_AT91RM9200
 	select HAVE_AT91_DBGU0
 	select MULTI_IRQ_HANDLER
 	select SPARSE_IRQ
+	select AT91_USE_OLD_CLK
+	select HAVE_AT91_USB_CLK
 
 config SOC_AT91SAM9260
 	bool "AT91SAM9260, AT91SAM9XE or AT91SAM9G20"
 	select HAVE_AT91_DBGU0
 	select SOC_AT91SAM9
+	select AT91_USE_OLD_CLK
+	select HAVE_AT91_USB_CLK
 	help
 	  Select this if you are using one of Atmel's AT91SAM9260, AT91SAM9XE
 	  or AT91SAM9G20 SoC.
@@ -92,6 +120,8 @@ config SOC_AT91SAM9261
 	select HAVE_AT91_DBGU0
 	select HAVE_FB_ATMEL
 	select SOC_AT91SAM9
+	select AT91_USE_OLD_CLK
+	select HAVE_AT91_USB_CLK
 	help
 	  Select this if you are using one of Atmel's AT91SAM9261 or AT91SAM9G10 SoC.
 
@@ -100,18 +130,25 @@ config SOC_AT91SAM9263
 	select HAVE_AT91_DBGU1
 	select HAVE_FB_ATMEL
 	select SOC_AT91SAM9
+	select AT91_USE_OLD_CLK
+	select HAVE_AT91_USB_CLK
 
 config SOC_AT91SAM9RL
 	bool "AT91SAM9RL"
 	select HAVE_AT91_DBGU0
 	select HAVE_FB_ATMEL
 	select SOC_AT91SAM9
+	select AT91_USE_OLD_CLK
+	select HAVE_AT91_UTMI
 
 config SOC_AT91SAM9G45
 	bool "AT91SAM9G45 or AT91SAM9M10 families"
 	select HAVE_AT91_DBGU1
 	select HAVE_FB_ATMEL
 	select SOC_AT91SAM9
+	select AT91_USE_OLD_CLK
+	select HAVE_AT91_UTMI
+	select HAVE_AT91_USB_CLK
 	help
 	  Select this if you are using one of Atmel's AT91SAM9G45 family SoC.
 	  This support covers AT91SAM9G45, AT91SAM9G46, AT91SAM9M10 and AT91SAM9M11.
@@ -121,6 +158,10 @@ config SOC_AT91SAM9X5
 	select HAVE_AT91_DBGU0
 	select HAVE_FB_ATMEL
 	select SOC_AT91SAM9
+	select AT91_USE_OLD_CLK
+	select HAVE_AT91_UTMI
+	select HAVE_AT91_SMD
+	select HAVE_AT91_USB_CLK
 	help
 	  Select this if you are using one of Atmel's AT91SAM9x5 family SoC.
 	  This means that your SAM9 name finishes with a '5' (except if it is
@@ -133,6 +174,8 @@ config SOC_AT91SAM9N12
 	select HAVE_AT91_DBGU0
 	select HAVE_FB_ATMEL
 	select SOC_AT91SAM9
+	select AT91_USE_OLD_CLK
+	select HAVE_AT91_USB_CLK
 	help
 	  Select this if you are using Atmel's AT91SAM9N12 SoC.
 

arch/arm/mach-at91/Kconfig.non_dt

@@ -12,26 +12,32 @@ config ARCH_AT91_NONE
 config ARCH_AT91RM9200
 	bool "AT91RM9200"
 	select SOC_AT91RM9200
+	select AT91_USE_OLD_CLK
 
 config ARCH_AT91SAM9260
 	bool "AT91SAM9260 or AT91SAM9XE or AT91SAM9G20"
 	select SOC_AT91SAM9260
+	select AT91_USE_OLD_CLK
 
 config ARCH_AT91SAM9261
 	bool "AT91SAM9261 or AT91SAM9G10"
 	select SOC_AT91SAM9261
+	select AT91_USE_OLD_CLK
 
 config ARCH_AT91SAM9263
 	bool "AT91SAM9263"
 	select SOC_AT91SAM9263
+	select AT91_USE_OLD_CLK
 
 config ARCH_AT91SAM9RL
 	bool "AT91SAM9RL"
 	select SOC_AT91SAM9RL
+	select AT91_USE_OLD_CLK
 
 config ARCH_AT91SAM9G45
 	bool "AT91SAM9G45"
 	select SOC_AT91SAM9G45
+	select AT91_USE_OLD_CLK
 
 config ARCH_AT91X40
 	bool "AT91x40"

arch/arm/mach-at91/Makefile

@@ -7,7 +7,7 @@ obj-m		:=
 obj-n		:=
 obj-		:=
 
-obj-$(CONFIG_AT91_PMC_UNIT)	+= clock.o
+obj-$(CONFIG_OLD_CLK_AT91)	+= clock.o
 obj-$(CONFIG_AT91_SAM9_ALT_RESET) += at91sam9_alt_reset.o
 obj-$(CONFIG_AT91_SAM9G45_RESET) += at91sam9g45_reset.o
 obj-$(CONFIG_AT91_SAM9_TIME)	+= at91sam926x_time.o

arch/arm/mach-at91/at91rm9200.c

@@ -12,13 +12,13 @@
 
 #include <linux/module.h>
 #include <linux/reboot.h>
+#include <linux/clk/at91_pmc.h>
 
 #include <asm/irq.h>
 #include <asm/mach/arch.h>
 #include <asm/mach/map.h>
 #include <asm/system_misc.h>
 #include <mach/at91rm9200.h>
-#include <mach/at91_pmc.h>
 #include <mach/at91_st.h>
 #include <mach/cpu.h>
 

arch/arm/mach-at91/at91sam9260.c

@@ -11,6 +11,7 @@
  */
 
 #include <linux/module.h>
+#include <linux/clk/at91_pmc.h>
 
 #include <asm/proc-fns.h>
 #include <asm/irq.h>
@@ -20,7 +21,6 @@
 #include <mach/cpu.h>
 #include <mach/at91_dbgu.h>
 #include <mach/at91sam9260.h>
-#include <mach/at91_pmc.h>
 
 #include "at91_aic.h"
 #include "at91_rstc.h"

arch/arm/mach-at91/at91sam9261.c

@@ -11,6 +11,7 @@
  */
 
 #include <linux/module.h>
+#include <linux/clk/at91_pmc.h>
 
 #include <asm/proc-fns.h>
 #include <asm/irq.h>
@@ -19,7 +20,6 @@
 #include <asm/system_misc.h>
 #include <mach/cpu.h>
 #include <mach/at91sam9261.h>
-#include <mach/at91_pmc.h>
 
 #include "at91_aic.h"
 #include "at91_rstc.h"

arch/arm/mach-at91/at91sam9263.c

@@ -11,6 +11,7 @@
  */
 
 #include <linux/module.h>
+#include <linux/clk/at91_pmc.h>
 
 #include <asm/proc-fns.h>
 #include <asm/irq.h>
@@ -18,7 +19,6 @@
 #include <asm/mach/map.h>
 #include <asm/system_misc.h>
 #include <mach/at91sam9263.h>
-#include <mach/at91_pmc.h>
 
 #include "at91_aic.h"
 #include "at91_rstc.h"

arch/arm/mach-at91/at91sam926x_time.c

@@ -39,6 +39,7 @@
 static u32 pit_cycle;		/* write-once */
 static u32 pit_cnt;		/* access only w/system irq blocked */
 static void __iomem *pit_base_addr __read_mostly;
+static struct clk *mck;
 
 static inline unsigned int pit_read(unsigned int reg_offset)
 {
@@ -195,10 +196,14 @@ static int __init of_at91sam926x_pit_init(void)
 	if (!pit_base_addr)
 		goto node_err;
 
+	mck = of_clk_get(np, 0);
+
 	/* Get the interrupts property */
 	ret = irq_of_parse_and_map(np, 0);
 	if (!ret) {
 		pr_crit("AT91: PIT: Unable to get IRQ from DT\n");
+		if (!IS_ERR(mck))
+			clk_put(mck);
 		goto ioremap_err;
 	}
 	at91sam926x_pit_irq.irq = ret;
@@ -230,6 +235,8 @@ void __init at91sam926x_pit_init(void)
 	unsigned	bits;
 	int		ret;
 
+	mck = ERR_PTR(-ENOENT);
+
 	/* For device tree enabled device: initialize here */
 	of_at91sam926x_pit_init();
 
@@ -237,7 +244,12 @@ void __init at91sam926x_pit_init(void)
 	 * Use our actual MCK to figure out how many MCK/16 ticks per
 	 * 1/HZ period (instead of a compile-time constant LATCH).
 	 */
-	pit_rate = clk_get_rate(clk_get(NULL, "mck")) / 16;
+	if (IS_ERR(mck))
+		mck = clk_get(NULL, "mck");
+
+	if (IS_ERR(mck))
+		panic("AT91: PIT: Unable to get mck clk\n");
+	pit_rate = clk_get_rate(mck) / 16;
 	pit_cycle = (pit_rate + HZ/2) / HZ;
 	WARN_ON(((pit_cycle - 1) & ~AT91_PIT_PIV) != 0);
 

arch/arm/mach-at91/at91sam9g45.c

@@ -12,13 +12,13 @@
 
 #include <linux/module.h>
 #include <linux/dma-mapping.h>
+#include <linux/clk/at91_pmc.h>
 
 #include <asm/irq.h>
 #include <asm/mach/arch.h>
 #include <asm/mach/map.h>
 #include <asm/system_misc.h>
 #include <mach/at91sam9g45.h>
-#include <mach/at91_pmc.h>
 #include <mach/cpu.h>
 
 #include "at91_aic.h"

arch/arm/mach-at91/at91sam9n12.c

@@ -8,12 +8,12 @@
 
 #include <linux/module.h>
 #include <linux/dma-mapping.h>
+#include <linux/clk/at91_pmc.h>
 
 #include <asm/irq.h>
 #include <asm/mach/arch.h>
 #include <asm/mach/map.h>
 #include <mach/at91sam9n12.h>
-#include <mach/at91_pmc.h>
 #include <mach/cpu.h>
 
 #include "board.h"

arch/arm/mach-at91/at91sam9rl.c

@@ -10,6 +10,7 @@
  */
 
 #include <linux/module.h>
+#include <linux/clk/at91_pmc.h>
 
 #include <asm/proc-fns.h>
 #include <asm/irq.h>
@@ -19,7 +20,6 @@
 #include <mach/cpu.h>
 #include <mach/at91_dbgu.h>
 #include <mach/at91sam9rl.h>
-#include <mach/at91_pmc.h>
 
 #include "at91_aic.h"
 #include "at91_rstc.h"

arch/arm/mach-at91/at91sam9x5.c

@@ -8,12 +8,12 @@
 
 #include <linux/module.h>
 #include <linux/dma-mapping.h>
+#include <linux/clk/at91_pmc.h>
 
 #include <asm/irq.h>
 #include <asm/mach/arch.h>
 #include <asm/mach/map.h>
 #include <mach/at91sam9x5.h>
-#include <mach/at91_pmc.h>
 #include <mach/cpu.h>
 
 #include "board.h"

arch/arm/mach-at91/board-dt-sama5.c

@@ -16,6 +16,7 @@
 #include <linux/of_irq.h>
 #include <linux/of_platform.h>
 #include <linux/phy.h>
+#include <linux/clk-provider.h>
 
 #include <asm/setup.h>
 #include <asm/irq.h>
@@ -26,6 +27,13 @@
 #include "at91_aic.h"
 #include "generic.h"
 
+static void __init sama5_dt_timer_init(void)
+{
+#if defined(CONFIG_COMMON_CLK)
+	of_clk_init(NULL);
+#endif
+	at91sam926x_pit_init();
+}
 
 static const struct of_device_id irq_of_match[] __initconst = {
 
@@ -72,7 +80,7 @@ static const char *sama5_dt_board_compat[] __initdata = {
 
 DT_MACHINE_START(sama5_dt, "Atmel SAMA5 (Device Tree)")
 	/* Maintainer: Atmel */
-	.init_time	= at91sam926x_pit_init,
+	.init_time	= sama5_dt_timer_init,
 	.map_io		= at91_map_io,
 	.handle_irq	= at91_aic5_handle_irq,
 	.init_early	= at91_dt_initialize,

arch/arm/mach-at91/clock.c

@@ -24,9 +24,9 @@
 #include <linux/clk.h>
 #include <linux/io.h>
 #include <linux/of_address.h>
+#include <linux/clk/at91_pmc.h>
 
 #include <mach/hardware.h>
-#include <mach/at91_pmc.h>
 #include <mach/cpu.h>
 
 #include <asm/proc-fns.h>
@@ -884,6 +884,11 @@ static int __init at91_pmc_init(unsigned long main_clock)
 #if defined(CONFIG_OF)
 static struct of_device_id pmc_ids[] = {
 	{ .compatible = "atmel,at91rm9200-pmc" },
+	{ .compatible = "atmel,at91sam9260-pmc" },
+	{ .compatible = "atmel,at91sam9g45-pmc" },
+	{ .compatible = "atmel,at91sam9n12-pmc" },
+	{ .compatible = "atmel,at91sam9x5-pmc" },
+	{ .compatible = "atmel,sama5d3-pmc" },
 	{ /*sentinel*/ }
 };
 

arch/arm/mach-at91/generic.h

@@ -46,11 +46,12 @@ extern void at91sam926x_pit_init(void);
 extern void at91x40_timer_init(void);
 
  /* Clocks */
-#ifdef CONFIG_AT91_PMC_UNIT
+#ifdef CONFIG_OLD_CLK_AT91
 extern int __init at91_clock_init(unsigned long main_clock);
 extern int __init at91_dt_clock_init(void);
 #else
 static int inline at91_clock_init(unsigned long main_clock) { return 0; }
+static int inline at91_dt_clock_init(void) { return 0; }
 #endif
 struct device;
 

arch/arm/mach-at91/pm.c

@@ -19,13 +19,13 @@
 #include <linux/module.h>
 #include <linux/platform_device.h>
 #include <linux/io.h>
+#include <linux/clk/at91_pmc.h>
 
 #include <asm/irq.h>
 #include <linux/atomic.h>
 #include <asm/mach/time.h>
 #include <asm/mach/irq.h>
 
-#include <mach/at91_pmc.h>
 #include <mach/cpu.h>
 
 #include "at91_aic.h"

arch/arm/mach-at91/pm_slowclock.S

@@ -13,8 +13,8 @@
  */
 
 #include <linux/linkage.h>
+#include <linux/clk/at91_pmc.h>
 #include <mach/hardware.h>
-#include <mach/at91_pmc.h>
 #include <mach/at91_ramc.h>
 
 

arch/arm/mach-at91/sama5d3.c

@@ -9,359 +9,18 @@
 
 #include <linux/module.h>
 #include <linux/dma-mapping.h>
+#include <linux/clk/at91_pmc.h>
 
 #include <asm/irq.h>
 #include <asm/mach/arch.h>
 #include <asm/mach/map.h>
 #include <mach/sama5d3.h>
-#include <mach/at91_pmc.h>
 #include <mach/cpu.h>
 
 #include "soc.h"
 #include "generic.h"
-#include "clock.h"
 #include "sam9_smc.h"
 
-/* --------------------------------------------------------------------
- *  Clocks
- * -------------------------------------------------------------------- */
-
-/*
- * The peripheral clocks.
- */
-
-static struct clk pioA_clk = {
-	.name		= "pioA_clk",
-	.pid		= SAMA5D3_ID_PIOA,
-	.type		= CLK_TYPE_PERIPHERAL,
-};
-static struct clk pioB_clk = {
-	.name		= "pioB_clk",
-	.pid		= SAMA5D3_ID_PIOB,
-	.type		= CLK_TYPE_PERIPHERAL,
-};
-static struct clk pioC_clk = {
-	.name		= "pioC_clk",
-	.pid		= SAMA5D3_ID_PIOC,
-	.type		= CLK_TYPE_PERIPHERAL,
-};
-static struct clk pioD_clk = {
-	.name		= "pioD_clk",
-	.pid		= SAMA5D3_ID_PIOD,
-	.type		= CLK_TYPE_PERIPHERAL,
-};
-static struct clk pioE_clk = {
-	.name		= "pioE_clk",
-	.pid		= SAMA5D3_ID_PIOE,
-	.type		= CLK_TYPE_PERIPHERAL,
-};
-static struct clk usart0_clk = {
-	.name		= "usart0_clk",
-	.pid		= SAMA5D3_ID_USART0,
-	.type		= CLK_TYPE_PERIPHERAL,
-	.div		= AT91_PMC_PCR_DIV2,
-};
-static struct clk usart1_clk = {
-	.name		= "usart1_clk",
-	.pid		= SAMA5D3_ID_USART1,
-	.type		= CLK_TYPE_PERIPHERAL,
-	.div		= AT91_PMC_PCR_DIV2,
-};
-static struct clk usart2_clk = {
-	.name		= "usart2_clk",
-	.pid		= SAMA5D3_ID_USART2,
-	.type		= CLK_TYPE_PERIPHERAL,
-	.div		= AT91_PMC_PCR_DIV2,
-};
-static struct clk usart3_clk = {
-	.name		= "usart3_clk",
-	.pid		= SAMA5D3_ID_USART3,
-	.type		= CLK_TYPE_PERIPHERAL,
-	.div		= AT91_PMC_PCR_DIV2,
-};
-static struct clk uart0_clk = {
-	.name		= "uart0_clk",
-	.pid		= SAMA5D3_ID_UART0,
-	.type		= CLK_TYPE_PERIPHERAL,
-	.div		= AT91_PMC_PCR_DIV2,
-};
-static struct clk uart1_clk = {
-	.name		= "uart1_clk",
-	.pid		= SAMA5D3_ID_UART1,
-	.type		= CLK_TYPE_PERIPHERAL,
-	.div		= AT91_PMC_PCR_DIV2,
-};
-static struct clk twi0_clk = {
-	.name		= "twi0_clk",
-	.pid		= SAMA5D3_ID_TWI0,
-	.type		= CLK_TYPE_PERIPHERAL,
-	.div		= AT91_PMC_PCR_DIV8,
-};
-static struct clk twi1_clk = {
-	.name		= "twi1_clk",
-	.pid		= SAMA5D3_ID_TWI1,
-	.type		= CLK_TYPE_PERIPHERAL,
-	.div		= AT91_PMC_PCR_DIV8,
-};
-static struct clk twi2_clk = {
-	.name		= "twi2_clk",
-	.pid		= SAMA5D3_ID_TWI2,
-	.type		= CLK_TYPE_PERIPHERAL,
-	.div		= AT91_PMC_PCR_DIV8,
-};
-static struct clk mmc0_clk = {
-	.name		= "mci0_clk",
-	.pid		= SAMA5D3_ID_HSMCI0,
-	.type		= CLK_TYPE_PERIPHERAL,
-};
-static struct clk mmc1_clk = {
-	.name		= "mci1_clk",
-	.pid		= SAMA5D3_ID_HSMCI1,
-	.type		= CLK_TYPE_PERIPHERAL,
-};
-static struct clk mmc2_clk = {
-	.name		= "mci2_clk",
-	.pid		= SAMA5D3_ID_HSMCI2,
-	.type		= CLK_TYPE_PERIPHERAL,
-};
-static struct clk spi0_clk = {
-	.name		= "spi0_clk",
-	.pid		= SAMA5D3_ID_SPI0,
-	.type		= CLK_TYPE_PERIPHERAL,
-};
-static struct clk spi1_clk = {
-	.name		= "spi1_clk",
-	.pid		= SAMA5D3_ID_SPI1,
-	.type		= CLK_TYPE_PERIPHERAL,
-};
-static struct clk tcb0_clk = {
-	.name		= "tcb0_clk",
-	.pid		= SAMA5D3_ID_TC0,
-	.type		= CLK_TYPE_PERIPHERAL,
-	.div		= AT91_PMC_PCR_DIV2,
-};
-static struct clk tcb1_clk = {
-	.name		= "tcb1_clk",
-	.pid		= SAMA5D3_ID_TC1,
-	.type		= CLK_TYPE_PERIPHERAL,
-	.div		= AT91_PMC_PCR_DIV2,
-};
-static struct clk adc_clk = {
-	.name		= "adc_clk",
-	.pid		= SAMA5D3_ID_ADC,
-	.type		= CLK_TYPE_PERIPHERAL,
-	.div		= AT91_PMC_PCR_DIV2,
-};
-static struct clk adc_op_clk = {
-	.name		= "adc_op_clk",
-	.type		= CLK_TYPE_PERIPHERAL,
-	.rate_hz	= 5000000,
-};
-static struct clk dma0_clk = {
-	.name		= "dma0_clk",
-	.pid		= SAMA5D3_ID_DMA0,
-	.type		= CLK_TYPE_PERIPHERAL,
-};
-static struct clk dma1_clk = {
-	.name		= "dma1_clk",
-	.pid		= SAMA5D3_ID_DMA1,
-	.type		= CLK_TYPE_PERIPHERAL,
-};
-static struct clk uhphs_clk = {
-	.name		= "uhphs",
-	.pid		= SAMA5D3_ID_UHPHS,
-	.type		= CLK_TYPE_PERIPHERAL,
-};
-static struct clk udphs_clk = {
-	.name		= "udphs_clk",
-	.pid		= SAMA5D3_ID_UDPHS,
-	.type		= CLK_TYPE_PERIPHERAL,
-};
-/* gmac only for sama5d33, sama5d34, sama5d35 */
-static struct clk macb0_clk = {
-	.name		= "macb0_clk",
-	.pid		= SAMA5D3_ID_GMAC,
-	.type		= CLK_TYPE_PERIPHERAL,
-};
-/* emac only for sama5d31, sama5d35 */
-static struct clk macb1_clk = {
-	.name		= "macb1_clk",
-	.pid		= SAMA5D3_ID_EMAC,
-	.type		= CLK_TYPE_PERIPHERAL,
-};
-/* lcd only for sama5d31, sama5d33, sama5d34 */
-static struct clk lcdc_clk = {
-	.name		= "lcdc_clk",
-	.pid		= SAMA5D3_ID_LCDC,
-	.type		= CLK_TYPE_PERIPHERAL,
-};
-/* isi only for sama5d33, sama5d35 */
-static struct clk isi_clk = {
-	.name		= "isi_clk",
-	.pid		= SAMA5D3_ID_ISI,
-	.type		= CLK_TYPE_PERIPHERAL,
-};
-static struct clk can0_clk = {
-	.name		= "can0_clk",
-	.pid		= SAMA5D3_ID_CAN0,
-	.type		= CLK_TYPE_PERIPHERAL,
-	.div		= AT91_PMC_PCR_DIV2,
-};
-static struct clk can1_clk = {
-	.name		= "can1_clk",
-	.pid		= SAMA5D3_ID_CAN1,
-	.type		= CLK_TYPE_PERIPHERAL,
-	.div		= AT91_PMC_PCR_DIV2,
-};
-static struct clk ssc0_clk = {
-	.name		= "ssc0_clk",
-	.pid		= SAMA5D3_ID_SSC0,
-	.type		= CLK_TYPE_PERIPHERAL,
-	.div		= AT91_PMC_PCR_DIV2,
-};
-static struct clk ssc1_clk = {
-	.name		= "ssc1_clk",
-	.pid		= SAMA5D3_ID_SSC1,
-	.type		= CLK_TYPE_PERIPHERAL,
-	.div		= AT91_PMC_PCR_DIV2,
-};
-static struct clk sha_clk = {
-	.name		= "sha_clk",
-	.pid		= SAMA5D3_ID_SHA,
-	.type		= CLK_TYPE_PERIPHERAL,
-	.div		= AT91_PMC_PCR_DIV8,
-};
-static struct clk aes_clk = {
-	.name		= "aes_clk",
-	.pid		= SAMA5D3_ID_AES,
-	.type		= CLK_TYPE_PERIPHERAL,
-};
-static struct clk tdes_clk = {
-	.name		= "tdes_clk",
-	.pid		= SAMA5D3_ID_TDES,
-	.type		= CLK_TYPE_PERIPHERAL,
-};
-
-static struct clk *periph_clocks[] __initdata = {
-	&pioA_clk,
-	&pioB_clk,
-	&pioC_clk,
-	&pioD_clk,
-	&pioE_clk,
-	&usart0_clk,
-	&usart1_clk,
-	&usart2_clk,
-	&usart3_clk,
-	&uart0_clk,
-	&uart1_clk,
-	&twi0_clk,
-	&twi1_clk,
-	&twi2_clk,
-	&mmc0_clk,
-	&mmc1_clk,
-	&mmc2_clk,
-	&spi0_clk,
-	&spi1_clk,
-	&tcb0_clk,
-	&tcb1_clk,
-	&adc_clk,
-	&adc_op_clk,
-	&dma0_clk,
-	&dma1_clk,
-	&uhphs_clk,
-	&udphs_clk,
-	&macb0_clk,
-	&macb1_clk,
-	&lcdc_clk,
-	&isi_clk,
-	&can0_clk,
-	&can1_clk,
-	&ssc0_clk,
-	&ssc1_clk,
-	&sha_clk,
-	&aes_clk,
-	&tdes_clk,
-};
-
-static struct clk pck0 = {
-	.name		= "pck0",
-	.pmc_mask	= AT91_PMC_PCK0,
-	.type		= CLK_TYPE_PROGRAMMABLE,
-	.id		= 0,
-};
-
-static struct clk pck1 = {
-	.name		= "pck1",
-	.pmc_mask	= AT91_PMC_PCK1,
-	.type		= CLK_TYPE_PROGRAMMABLE,
-	.id		= 1,
-};
-
-static struct clk pck2 = {
-	.name		= "pck2",
-	.pmc_mask	= AT91_PMC_PCK2,
-	.type		= CLK_TYPE_PROGRAMMABLE,
-	.id		= 2,
-};
-
-static struct clk_lookup periph_clocks_lookups[] = {
-	/* lookup table for DT entries */
-	CLKDEV_CON_DEV_ID("usart", "ffffee00.serial", &mck),
-	CLKDEV_CON_DEV_ID(NULL, "fffff200.gpio", &pioA_clk),
-	CLKDEV_CON_DEV_ID(NULL, "fffff400.gpio", &pioB_clk),
-	CLKDEV_CON_DEV_ID(NULL, "fffff600.gpio", &pioC_clk),
-	CLKDEV_CON_DEV_ID(NULL, "fffff800.gpio", &pioD_clk),
-	CLKDEV_CON_DEV_ID(NULL, "fffffa00.gpio", &pioE_clk),
-	CLKDEV_CON_DEV_ID("usart", "f001c000.serial", &usart0_clk),
-	CLKDEV_CON_DEV_ID("usart", "f0020000.serial", &usart1_clk),
-	CLKDEV_CON_DEV_ID("usart", "f8020000.serial", &usart2_clk),
-	CLKDEV_CON_DEV_ID("usart", "f8024000.serial", &usart3_clk),
-	CLKDEV_CON_DEV_ID(NULL, "f0014000.i2c", &twi0_clk),
-	CLKDEV_CON_DEV_ID(NULL, "f0018000.i2c", &twi1_clk),
-	CLKDEV_CON_DEV_ID(NULL, "f801c000.i2c", &twi2_clk),
-	CLKDEV_CON_DEV_ID("mci_clk", "f0000000.mmc", &mmc0_clk),
-	CLKDEV_CON_DEV_ID("mci_clk", "f8000000.mmc", &mmc1_clk),
-	CLKDEV_CON_DEV_ID("mci_clk", "f8004000.mmc", &mmc2_clk),
-	CLKDEV_CON_DEV_ID("spi_clk", "f0004000.spi", &spi0_clk),
-	CLKDEV_CON_DEV_ID("spi_clk", "f8008000.spi", &spi1_clk),
-	CLKDEV_CON_DEV_ID("t0_clk", "f0010000.timer", &tcb0_clk),
-	CLKDEV_CON_DEV_ID("t0_clk", "f8014000.timer", &tcb1_clk),
-	CLKDEV_CON_DEV_ID("tsc_clk", "f8018000.tsadcc", &adc_clk),
-	CLKDEV_CON_DEV_ID("dma_clk", "ffffe600.dma-controller", &dma0_clk),
-	CLKDEV_CON_DEV_ID("dma_clk", "ffffe800.dma-controller", &dma1_clk),
-	CLKDEV_CON_DEV_ID("hclk", "600000.ohci", &uhphs_clk),
-	CLKDEV_CON_DEV_ID("ohci_clk", "600000.ohci", &uhphs_clk),
-	CLKDEV_CON_DEV_ID("ehci_clk", "700000.ehci", &uhphs_clk),
-	CLKDEV_CON_DEV_ID("pclk", "500000.gadget", &udphs_clk),
-	CLKDEV_CON_DEV_ID("hclk", "500000.gadget", &utmi_clk),
-	CLKDEV_CON_DEV_ID("hclk", "f0028000.ethernet", &macb0_clk),
-	CLKDEV_CON_DEV_ID("pclk", "f0028000.ethernet", &macb0_clk),
-	CLKDEV_CON_DEV_ID("hclk", "f802c000.ethernet", &macb1_clk),
-	CLKDEV_CON_DEV_ID("pclk", "f802c000.ethernet", &macb1_clk),
-	CLKDEV_CON_DEV_ID("pclk", "f0008000.ssc", &ssc0_clk),
-	CLKDEV_CON_DEV_ID("pclk", "f000c000.ssc", &ssc1_clk),
-	CLKDEV_CON_DEV_ID("can_clk", "f000c000.can", &can0_clk),
-	CLKDEV_CON_DEV_ID("can_clk", "f8010000.can", &can1_clk),
-	CLKDEV_CON_DEV_ID("sha_clk", "f8034000.sha", &sha_clk),
-	CLKDEV_CON_DEV_ID("aes_clk", "f8038000.aes", &aes_clk),
-	CLKDEV_CON_DEV_ID("tdes_clk", "f803c000.tdes", &tdes_clk),
-};
-
-static void __init sama5d3_register_clocks(void)
-{
-	int i;
-
-	for (i = 0; i < ARRAY_SIZE(periph_clocks); i++)
-		clk_register(periph_clocks[i]);
-
-	clkdev_add_table(periph_clocks_lookups,
-			 ARRAY_SIZE(periph_clocks_lookups));
-
-	clk_register(&pck0);
-	clk_register(&pck1);
-	clk_register(&pck2);
-}
-
 /* --------------------------------------------------------------------
  *  AT91SAM9x5 processor initialization
  * -------------------------------------------------------------------- */
@@ -378,6 +37,5 @@ static void __init sama5d3_initialize(void)
 
 AT91_SOC_START(sama5d3)
 	.map_io = sama5d3_map_io,
-	.register_clocks = sama5d3_register_clocks,
 	.init = sama5d3_initialize,
 AT91_SOC_END

arch/arm/mach-at91/setup.c

@@ -11,6 +11,7 @@
 #include <linux/pm.h>
 #include <linux/of_address.h>
 #include <linux/pinctrl/machine.h>
+#include <linux/clk/at91_pmc.h>
 
 #include <asm/system_misc.h>
 #include <asm/mach/map.h>
@@ -18,7 +19,6 @@
 #include <mach/hardware.h>
 #include <mach/cpu.h>
 #include <mach/at91_dbgu.h>
-#include <mach/at91_pmc.h>
 
 #include "at91_shdwc.h"
 #include "soc.h"
@@ -491,6 +491,7 @@ void __init at91rm9200_dt_initialize(void)
 	at91_dt_clock_init();
 
 	/* Register the processor-specific clocks */
+	if (at91_boot_soc.register_clocks)
 		at91_boot_soc.register_clocks();
 
 	at91_boot_soc.init();
@@ -506,6 +507,7 @@ void __init at91_dt_initialize(void)
 	at91_dt_clock_init();
 
 	/* Register the processor-specific clocks */
+	if (at91_boot_soc.register_clocks)
 		at91_boot_soc.register_clocks();
 
 	if (at91_boot_soc.init)

drivers/clk/Makefile

@@ -35,6 +35,7 @@ obj-$(CONFIG_ARCH_TEGRA)	+= tegra/
 obj-$(CONFIG_PLAT_SAMSUNG)	+= samsung/
 obj-$(CONFIG_COMMON_CLK_XGENE)  += clk-xgene.o
 obj-$(CONFIG_COMMON_CLK_KEYSTONE)	+= keystone/
+obj-$(CONFIG_COMMON_CLK_AT91)	+= at91/
 
 obj-$(CONFIG_X86)		+= x86/
 

drivers/clk/at91/Makefile

+#
+# Makefile for at91 specific clk
+#
+
+obj-y += pmc.o
+obj-y += clk-main.o clk-pll.o clk-plldiv.o clk-master.o
+obj-y += clk-system.o clk-peripheral.o
+
+obj-$(CONFIG_AT91_PROGRAMMABLE_CLOCKS)	+= clk-programmable.o
+obj-$(CONFIG_HAVE_AT91_UTMI)		+= clk-utmi.o
+obj-$(CONFIG_HAVE_AT91_USB_CLK)		+= clk-usb.o
+obj-$(CONFIG_HAVE_AT91_SMD)		+= clk-smd.o

drivers/clk/at91/clk-main.c

+/*
+ *  Copyright (C) 2013 Boris BREZILLON <b.brezillon@overkiz.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ */
+
+#include <linux/clk-provider.h>
+#include <linux/clkdev.h>
+#include <linux/clk/at91_pmc.h>
+#include <linux/delay.h>
+#include <linux/of.h>
+#include <linux/of_address.h>
+#include <linux/of_irq.h>
+#include <linux/io.h>
+#include <linux/interrupt.h>
+#include <linux/irq.h>
+#include <linux/sched.h>
+#include <linux/wait.h>
+
+#include "pmc.h"
+
+#define SLOW_CLOCK_FREQ		32768
+#define MAINF_DIV		16
+#define MAINFRDY_TIMEOUT	(((MAINF_DIV + 1) * USEC_PER_SEC) / \
+				 SLOW_CLOCK_FREQ)
+#define MAINF_LOOP_MIN_WAIT	(USEC_PER_SEC / SLOW_CLOCK_FREQ)
+#define MAINF_LOOP_MAX_WAIT	MAINFRDY_TIMEOUT
+
+struct clk_main {
+	struct clk_hw hw;
+	struct at91_pmc *pmc;
+	unsigned long rate;
+	unsigned int irq;
+	wait_queue_head_t wait;
+};
+
+#define to_clk_main(hw) container_of(hw, struct clk_main, hw)
+
+static irqreturn_t clk_main_irq_handler(int irq, void *dev_id)
+{
+	struct clk_main *clkmain = (struct clk_main *)dev_id;
+
+	wake_up(&clkmain->wait);
+	disable_irq_nosync(clkmain->irq);
+
+	return IRQ_HANDLED;
+}
+
+static int clk_main_prepare(struct clk_hw *hw)
+{
+	struct clk_main *clkmain = to_clk_main(hw);
+	struct at91_pmc *pmc = clkmain->pmc;
+	unsigned long halt_time, timeout;
+	u32 tmp;
+
+	while (!(pmc_read(pmc, AT91_PMC_SR) & AT91_PMC_MOSCS)) {
+		enable_irq(clkmain->irq);
+		wait_event(clkmain->wait,
+			   pmc_read(pmc, AT91_PMC_SR) & AT91_PMC_MOSCS);
+	}
+
+	if (clkmain->rate)
+		return 0;
+
+	timeout = jiffies + usecs_to_jiffies(MAINFRDY_TIMEOUT);
+	do {
+		halt_time = jiffies;
+		tmp = pmc_read(pmc, AT91_CKGR_MCFR);
+		if (tmp & AT91_PMC_MAINRDY)
+			return 0;
+		usleep_range(MAINF_LOOP_MIN_WAIT, MAINF_LOOP_MAX_WAIT);
+	} while (time_before(halt_time, timeout));
+
+	return 0;
+}
+
+static int clk_main_is_prepared(struct clk_hw *hw)
+{
+	struct clk_main *clkmain = to_clk_main(hw);
+
+	return !!(pmc_read(clkmain->pmc, AT91_PMC_SR) & AT91_PMC_MOSCS);
+}
+
+static unsigned long clk_main_recalc_rate(struct clk_hw *hw,
+					  unsigned long parent_rate)
+{
+	u32 tmp;
+	struct clk_main *clkmain = to_clk_main(hw);
+	struct at91_pmc *pmc = clkmain->pmc;
+
+	if (clkmain->rate)
+		return clkmain->rate;
+
+	tmp = pmc_read(pmc, AT91_CKGR_MCFR) & AT91_PMC_MAINF;
+	clkmain->rate = (tmp * parent_rate) / MAINF_DIV;
+
+	return clkmain->rate;
+}
+
+static const struct clk_ops main_ops = {
+	.prepare = clk_main_prepare,
+	.is_prepared = clk_main_is_prepared,
+	.recalc_rate = clk_main_recalc_rate,
+};
+
+static struct clk * __init
+at91_clk_register_main(struct at91_pmc *pmc,
+		       unsigned int irq,
+		       const char *name,
+		       const char *parent_name,
+		       unsigned long rate)
+{
+	int ret;
+	struct clk_main *clkmain;
+	struct clk *clk = NULL;
+	struct clk_init_data init;
+
+	if (!pmc || !irq || !name)
+		return ERR_PTR(-EINVAL);
+
+	if (!rate && !parent_name)
+		return ERR_PTR(-EINVAL);
+
+	clkmain = kzalloc(sizeof(*clkmain), GFP_KERNEL);
+	if (!clkmain)
+		return ERR_PTR(-ENOMEM);
+
+	init.name = name;
+	init.ops = &main_ops;
+	init.parent_names = parent_name ? &parent_name : NULL;
+	init.num_parents = parent_name ? 1 : 0;
+	init.flags = parent_name ? 0 : CLK_IS_ROOT;
+
+	clkmain->hw.init = &init;
+	clkmain->rate = rate;
+	clkmain->pmc = pmc;
+	clkmain->irq = irq;
+	init_waitqueue_head(&clkmain->wait);
+	irq_set_status_flags(clkmain->irq, IRQ_NOAUTOEN);
+	ret = request_irq(clkmain->irq, clk_main_irq_handler,
+			  IRQF_TRIGGER_HIGH, "clk-main", clkmain);
+	if (ret)
+		return ERR_PTR(ret);
+
+	clk = clk_register(NULL, &clkmain->hw);
+	if (IS_ERR(clk)) {
+		free_irq(clkmain->irq, clkmain);
+		kfree(clkmain);
+	}
+
+	return clk;
+}
+
+
+
+static void __init
+of_at91_clk_main_setup(struct device_node *np, struct at91_pmc *pmc)
+{
+	struct clk *clk;
+	unsigned int irq;
+	const char *parent_name;
+	const char *name = np->name;
+	u32 rate = 0;
+
+	parent_name = of_clk_get_parent_name(np, 0);
+	of_property_read_string(np, "clock-output-names", &name);
+	of_property_read_u32(np, "clock-frequency", &rate);
+	irq = irq_of_parse_and_map(np, 0);
+	if (!irq)
+		return;
+
+	clk = at91_clk_register_main(pmc, irq, name, parent_name, rate);
+	if (IS_ERR(clk))
+		return;
+
+	of_clk_add_provider(np, of_clk_src_simple_get, clk);
+}
+
+void __init of_at91rm9200_clk_main_setup(struct device_node *np,
+					 struct at91_pmc *pmc)
+{
+	of_at91_clk_main_setup(np, pmc);
+}

drivers/clk/at91/clk-master.c

+/*
+ *  Copyright (C) 2013 Boris BREZILLON <b.brezillon@overkiz.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ */
+
+#include <linux/clk-provider.h>
+#include <linux/clkdev.h>
+#include <linux/clk/at91_pmc.h>
+#include <linux/of.h>
+#include <linux/of_address.h>
+#include <linux/of_irq.h>
+#include <linux/io.h>
+#include <linux/wait.h>
+#include <linux/sched.h>
+#include <linux/interrupt.h>
+#include <linux/irq.h>
+
+#include "pmc.h"
+
+#define MASTER_SOURCE_MAX	4
+
+#define MASTER_PRES_MASK	0x7
+#define MASTER_PRES_MAX		MASTER_PRES_MASK
+#define MASTER_DIV_SHIFT	8
+#define MASTER_DIV_MASK		0x3
+
+struct clk_master_characteristics {
+	struct clk_range output;
+	u32 divisors[4];
+	u8 have_div3_pres;
+};
+
+struct clk_master_layout {
+	u32 mask;
+	u8 pres_shift;
+};
+
+#define to_clk_master(hw) container_of(hw, struct clk_master, hw)
+
+struct clk_master {
+	struct clk_hw hw;
+	struct at91_pmc *pmc;
+	unsigned int irq;
+	wait_queue_head_t wait;
+	const struct clk_master_layout *layout;
+	const struct clk_master_characteristics *characteristics;
+};
+
+static irqreturn_t clk_master_irq_handler(int irq, void *dev_id)
+{
+	struct clk_master *master = (struct clk_master *)dev_id;
+
+	wake_up(&master->wait);
+	disable_irq_nosync(master->irq);
+
+	return IRQ_HANDLED;
+}
+static int clk_master_prepare(struct clk_hw *hw)
+{
+	struct clk_master *master = to_clk_master(hw);
+	struct at91_pmc *pmc = master->pmc;
+
+	while (!(pmc_read(pmc, AT91_PMC_SR) & AT91_PMC_MCKRDY)) {
+		enable_irq(master->irq);
+		wait_event(master->wait,
+			   pmc_read(pmc, AT91_PMC_SR) & AT91_PMC_MCKRDY);
+	}
+
+	return 0;
+}
+
+static int clk_master_is_prepared(struct clk_hw *hw)
+{
+	struct clk_master *master = to_clk_master(hw);
+
+	return !!(pmc_read(master->pmc, AT91_PMC_SR) & AT91_PMC_MCKRDY);
+}
+
+static unsigned long clk_master_recalc_rate(struct clk_hw *hw,
+					    unsigned long parent_rate)
+{
+	u8 pres;
+	u8 div;
+	unsigned long rate = parent_rate;
+	struct clk_master *master = to_clk_master(hw);
+	struct at91_pmc *pmc = master->pmc;
+	const struct clk_master_layout *layout = master->layout;
+	const struct clk_master_characteristics *characteristics =
+						master->characteristics;
+	u32 tmp;
+
+	pmc_lock(pmc);
+	tmp = pmc_read(pmc, AT91_PMC_MCKR) & layout->mask;
+	pmc_unlock(pmc);
+
+	pres = (tmp >> layout->pres_shift) & MASTER_PRES_MASK;
+	div = (tmp >> MASTER_DIV_SHIFT) & MASTER_DIV_MASK;
+
+	if (characteristics->have_div3_pres && pres == MASTER_PRES_MAX)
+		rate /= 3;
+	else
+		rate >>= pres;
+
+	rate /= characteristics->divisors[div];
+
+	if (rate < characteristics->output.min)
+		pr_warn("master clk is underclocked");
+	else if (rate > characteristics->output.max)
+		pr_warn("master clk is overclocked");
+
+	return rate;
+}
+
+static u8 clk_master_get_parent(struct clk_hw *hw)
+{
+	struct clk_master *master = to_clk_master(hw);
+	struct at91_pmc *pmc = master->pmc;
+
+	return pmc_read(pmc, AT91_PMC_MCKR) & AT91_PMC_CSS;
+}
+
+static const struct clk_ops master_ops = {
+	.prepare = clk_master_prepare,
+	.is_prepared = clk_master_is_prepared,
+	.recalc_rate = clk_master_recalc_rate,
+	.get_parent = clk_master_get_parent,
+};
+
+static struct clk * __init
+at91_clk_register_master(struct at91_pmc *pmc, unsigned int irq,
+		const char *name, int num_parents,
+		const char **parent_names,
+		const struct clk_master_layout *layout,
+		const struct clk_master_characteristics *characteristics)
+{
+	int ret;
+	struct clk_master *master;
+	struct clk *clk = NULL;
+	struct clk_init_data init;
+
+	if (!pmc || !irq || !name || !num_parents || !parent_names)
+		return ERR_PTR(-EINVAL);
+
+	master = kzalloc(sizeof(*master), GFP_KERNEL);
+	if (!master)
+		return ERR_PTR(-ENOMEM);
+
+	init.name = name;
+	init.ops = &master_ops;
+	init.parent_names = parent_names;
+	init.num_parents = num_parents;
+	init.flags = 0;
+
+	master->hw.init = &init;
+	master->layout = layout;
+	master->characteristics = characteristics;
+	master->pmc = pmc;
+	master->irq = irq;
+	init_waitqueue_head(&master->wait);
+	irq_set_status_flags(master->irq, IRQ_NOAUTOEN);
+	ret = request_irq(master->irq, clk_master_irq_handler,
+			  IRQF_TRIGGER_HIGH, "clk-master", master);
+	if (ret)
+		return ERR_PTR(ret);
+
+	clk = clk_register(NULL, &master->hw);
+	if (IS_ERR(clk))
+		kfree(master);
+
+	return clk;
+}
+
+
+static const struct clk_master_layout at91rm9200_master_layout = {
+	.mask = 0x31F,
+	.pres_shift = 2,
+};
+
+static const struct clk_master_layout at91sam9x5_master_layout = {
+	.mask = 0x373,
+	.pres_shift = 4,
+};
+
+
+static struct clk_master_characteristics * __init
+of_at91_clk_master_get_characteristics(struct device_node *np)
+{
+	struct clk_master_characteristics *characteristics;
+
+	characteristics = kzalloc(sizeof(*characteristics), GFP_KERNEL);
+	if (!characteristics)
+		return NULL;
+
+	if (of_at91_get_clk_range(np, "atmel,clk-output-range", &characteristics->output))
+		goto out_free_characteristics;
+
+	of_property_read_u32_array(np, "atmel,clk-divisors",
+				   characteristics->divisors, 4);
+
+	characteristics->have_div3_pres =
+		of_property_read_bool(np, "atmel,master-clk-have-div3-pres");
+
+	return characteristics;
+
+out_free_characteristics:
+	kfree(characteristics);
+	return NULL;
+}
+
+static void __init
+of_at91_clk_master_setup(struct device_node *np, struct at91_pmc *pmc,
+			 const struct clk_master_layout *layout)
+{
+	struct clk *clk;
+	int num_parents;
+	int i;
+	unsigned int irq;
+	const char *parent_names[MASTER_SOURCE_MAX];
+	const char *name = np->name;
+	struct clk_master_characteristics *characteristics;
+
+	num_parents = of_count_phandle_with_args(np, "clocks", "#clock-cells");
+	if (num_parents <= 0 || num_parents > MASTER_SOURCE_MAX)
+		return;
+
+	for (i = 0; i < num_parents; ++i) {
+		parent_names[i] = of_clk_get_parent_name(np, i);
+		if (!parent_names[i])
+			return;
+	}
+
+	of_property_read_string(np, "clock-output-names", &name);
+
+	characteristics = of_at91_clk_master_get_characteristics(np);
+	if (!characteristics)
+		return;
+
+	irq = irq_of_parse_and_map(np, 0);
+	if (!irq)
+		return;
+
+	clk = at91_clk_register_master(pmc, irq, name, num_parents,
+				       parent_names, layout,
+				       characteristics);
+	if (IS_ERR(clk))
+		goto out_free_characteristics;
+
+	of_clk_add_provider(np, of_clk_src_simple_get, clk);
+	return;
+
+out_free_characteristics:
+	kfree(characteristics);
+}
+
+void __init of_at91rm9200_clk_master_setup(struct device_node *np,
+					   struct at91_pmc *pmc)
+{
+	of_at91_clk_master_setup(np, pmc, &at91rm9200_master_layout);
+}
+
+void __init of_at91sam9x5_clk_master_setup(struct device_node *np,
+					   struct at91_pmc *pmc)
+{
+	of_at91_clk_master_setup(np, pmc, &at91sam9x5_master_layout);
+}

drivers/clk/at91/clk-peripheral.c

+/*
+ *  Copyright (C) 2013 Boris BREZILLON <b.brezillon@overkiz.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ */
+
+#include <linux/clk-provider.h>
+#include <linux/clkdev.h>
+#include <linux/clk/at91_pmc.h>
+#include <linux/of.h>
+#include <linux/of_address.h>
+#include <linux/io.h>
+
+#include "pmc.h"
+
+#define PERIPHERAL_MAX		64
+
+#define PERIPHERAL_AT91RM9200	0
+#define PERIPHERAL_AT91SAM9X5	1
+
+#define PERIPHERAL_ID_MIN	2
+#define PERIPHERAL_ID_MAX	31
+#define PERIPHERAL_MASK(id)	(1 << ((id) & PERIPHERAL_ID_MAX))
+
+#define PERIPHERAL_RSHIFT_MASK	0x3
+#define PERIPHERAL_RSHIFT(val)	(((val) >> 16) & PERIPHERAL_RSHIFT_MASK)
+
+#define PERIPHERAL_MAX_SHIFT	4
+
+struct clk_peripheral {
+	struct clk_hw hw;
+	struct at91_pmc *pmc;
+	u32 id;
+};
+
+#define to_clk_peripheral(hw) container_of(hw, struct clk_peripheral, hw)
+
+struct clk_sam9x5_peripheral {
+	struct clk_hw hw;
+	struct at91_pmc *pmc;
+	struct clk_range range;
+	u32 id;
+	u32 div;
+	bool auto_div;
+};
+
+#define to_clk_sam9x5_peripheral(hw) \
+	container_of(hw, struct clk_sam9x5_peripheral, hw)
+
+static int clk_peripheral_enable(struct clk_hw *hw)
+{
+	struct clk_peripheral *periph = to_clk_peripheral(hw);
+	struct at91_pmc *pmc = periph->pmc;
+	int offset = AT91_PMC_PCER;
+	u32 id = periph->id;
+
+	if (id < PERIPHERAL_ID_MIN)
+		return 0;
+	if (id > PERIPHERAL_ID_MAX)
+		offset = AT91_PMC_PCER1;
+	pmc_write(pmc, offset, PERIPHERAL_MASK(id));
+	return 0;
+}
+
+static void clk_peripheral_disable(struct clk_hw *hw)
+{
+	struct clk_peripheral *periph = to_clk_peripheral(hw);
+	struct at91_pmc *pmc = periph->pmc;
+	int offset = AT91_PMC_PCDR;
+	u32 id = periph->id;
+
+	if (id < PERIPHERAL_ID_MIN)
+		return;
+	if (id > PERIPHERAL_ID_MAX)
+		offset = AT91_PMC_PCDR1;
+	pmc_write(pmc, offset, PERIPHERAL_MASK(id));
+}
+
+static int clk_peripheral_is_enabled(struct clk_hw *hw)
+{
+	struct clk_peripheral *periph = to_clk_peripheral(hw);
+	struct at91_pmc *pmc = periph->pmc;
+	int offset = AT91_PMC_PCSR;
+	u32 id = periph->id;
+
+	if (id < PERIPHERAL_ID_MIN)
+		return 1;
+	if (id > PERIPHERAL_ID_MAX)
+		offset = AT91_PMC_PCSR1;
+	return !!(pmc_read(pmc, offset) & PERIPHERAL_MASK(id));
+}
+
+static const struct clk_ops peripheral_ops = {
+	.enable = clk_peripheral_enable,
+	.disable = clk_peripheral_disable,
+	.is_enabled = clk_peripheral_is_enabled,
+};
+
+static struct clk * __init
+at91_clk_register_peripheral(struct at91_pmc *pmc, const char *name,
+			     const char *parent_name, u32 id)
+{
+	struct clk_peripheral *periph;
+	struct clk *clk = NULL;
+	struct clk_init_data init;
+
+	if (!pmc || !name || !parent_name || id > PERIPHERAL_ID_MAX)
+		return ERR_PTR(-EINVAL);
+
+	periph = kzalloc(sizeof(*periph), GFP_KERNEL);
+	if (!periph)
+		return ERR_PTR(-ENOMEM);
+
+	init.name = name;
+	init.ops = &peripheral_ops;
+	init.parent_names = (parent_name ? &parent_name : NULL);
+	init.num_parents = (parent_name ? 1 : 0);
+	init.flags = 0;
+
+	periph->id = id;
+	periph->hw.init = &init;
+	periph->pmc = pmc;
+
+	clk = clk_register(NULL, &periph->hw);
+	if (IS_ERR(clk))
+		kfree(periph);
+
+	return clk;
+}
+
+static void clk_sam9x5_peripheral_autodiv(struct clk_sam9x5_peripheral *periph)
+{
+	struct clk *parent;
+	unsigned long parent_rate;
+	int shift = 0;
+
+	if (!periph->auto_div)
+		return;
+
+	if (periph->range.max) {
+		parent = clk_get_parent_by_index(periph->hw.clk, 0);
+		parent_rate = __clk_get_rate(parent);
+		if (!parent_rate)
+			return;
+
+		for (; shift < PERIPHERAL_MAX_SHIFT; shift++) {
+			if (parent_rate >> shift <= periph->range.max)
+				break;
+		}
+	}
+
+	periph->auto_div = false;
+	periph->div = shift;
+}
+
+static int clk_sam9x5_peripheral_enable(struct clk_hw *hw)
+{
+	struct clk_sam9x5_peripheral *periph = to_clk_sam9x5_peripheral(hw);
+	struct at91_pmc *pmc = periph->pmc;
+
+	if (periph->id < PERIPHERAL_ID_MIN)
+		return 0;
+
+	pmc_write(pmc, AT91_PMC_PCR, (periph->id & AT91_PMC_PCR_PID) |
+				     AT91_PMC_PCR_CMD |
+				     AT91_PMC_PCR_DIV(periph->div) |
+				     AT91_PMC_PCR_EN);
+	return 0;
+}
+
+static void clk_sam9x5_peripheral_disable(struct clk_hw *hw)
+{
+	struct clk_sam9x5_peripheral *periph = to_clk_sam9x5_peripheral(hw);
+	struct at91_pmc *pmc = periph->pmc;
+
+	if (periph->id < PERIPHERAL_ID_MIN)
+		return;
+
+	pmc_write(pmc, AT91_PMC_PCR, (periph->id & AT91_PMC_PCR_PID) |
+				     AT91_PMC_PCR_CMD);
+}
+
+static int clk_sam9x5_peripheral_is_enabled(struct clk_hw *hw)
+{
+	struct clk_sam9x5_peripheral *periph = to_clk_sam9x5_peripheral(hw);
+	struct at91_pmc *pmc = periph->pmc;
+	int ret;
+
+	if (periph->id < PERIPHERAL_ID_MIN)
+		return 1;
+
+	pmc_lock(pmc);
+	pmc_write(pmc, AT91_PMC_PCR, (periph->id & AT91_PMC_PCR_PID));
+	ret = !!(pmc_read(pmc, AT91_PMC_PCR) & AT91_PMC_PCR_EN);
+	pmc_unlock(pmc);
+
+	return ret;
+}
+
+static unsigned long
+clk_sam9x5_peripheral_recalc_rate(struct clk_hw *hw,
+				  unsigned long parent_rate)
+{
+	struct clk_sam9x5_peripheral *periph = to_clk_sam9x5_peripheral(hw);
+	struct at91_pmc *pmc = periph->pmc;
+	u32 tmp;
+
+	if (periph->id < PERIPHERAL_ID_MIN)
+		return parent_rate;
+
+	pmc_lock(pmc);
+	pmc_write(pmc, AT91_PMC_PCR, (periph->id & AT91_PMC_PCR_PID));
+	tmp = pmc_read(pmc, AT91_PMC_PCR);
+	pmc_unlock(pmc);
+
+	if (tmp & AT91_PMC_PCR_EN) {
+		periph->div = PERIPHERAL_RSHIFT(tmp);
+		periph->auto_div = false;
+	} else {
+		clk_sam9x5_peripheral_autodiv(periph);
+	}
+
+	return parent_rate >> periph->div;
+}
+
+static long clk_sam9x5_peripheral_round_rate(struct clk_hw *hw,
+					     unsigned long rate,
+					     unsigned long *parent_rate)
+{
+	int shift = 0;
+	unsigned long best_rate;
+	unsigned long best_diff;
+	unsigned long cur_rate = *parent_rate;
+	unsigned long cur_diff;
+	struct clk_sam9x5_peripheral *periph = to_clk_sam9x5_peripheral(hw);
+
+	if (periph->id < PERIPHERAL_ID_MIN || !periph->range.max)
+		return *parent_rate;
+
+	if (periph->range.max) {
+		for (; shift < PERIPHERAL_MAX_SHIFT; shift++) {
+			cur_rate = *parent_rate >> shift;
+			if (cur_rate <= periph->range.max)
+				break;
+		}
+	}
+
+	if (rate >= cur_rate)
+		return cur_rate;
+
+	best_diff = cur_rate - rate;
+	best_rate = cur_rate;
+	for (; shift < PERIPHERAL_MAX_SHIFT; shift++) {
+		cur_rate = *parent_rate >> shift;
+		if (cur_rate < rate)
+			cur_diff = rate - cur_rate;
+		else
+			cur_diff = cur_rate - rate;
+
+		if (cur_diff < best_diff) {
+			best_diff = cur_diff;
+			best_rate = cur_rate;
+		}
+
+		if (!best_diff || cur_rate < rate)
+			break;
+	}
+
+	return best_rate;
+}
+
+static int clk_sam9x5_peripheral_set_rate(struct clk_hw *hw,
+					  unsigned long rate,
+					  unsigned long parent_rate)
+{
+	int shift;
+	struct clk_sam9x5_peripheral *periph = to_clk_sam9x5_peripheral(hw);
+	if (periph->id < PERIPHERAL_ID_MIN || !periph->range.max) {
+		if (parent_rate == rate)
+			return 0;
+		else
+			return -EINVAL;
+	}
+
+	if (periph->range.max && rate > periph->range.max)
+		return -EINVAL;
+
+	for (shift = 0; shift < PERIPHERAL_MAX_SHIFT; shift++) {
+		if (parent_rate >> shift == rate) {
+			periph->auto_div = false;
+			periph->div = shift;
+			return 0;
+		}
+	}
+
+	return -EINVAL;
+}
+
+static const struct clk_ops sam9x5_peripheral_ops = {
+	.enable = clk_sam9x5_peripheral_enable,
+	.disable = clk_sam9x5_peripheral_disable,
+	.is_enabled = clk_sam9x5_peripheral_is_enabled,
+	.recalc_rate = clk_sam9x5_peripheral_recalc_rate,
+	.round_rate = clk_sam9x5_peripheral_round_rate,
+	.set_rate = clk_sam9x5_peripheral_set_rate,
+};
+
+static struct clk * __init
+at91_clk_register_sam9x5_peripheral(struct at91_pmc *pmc, const char *name,
+				    const char *parent_name, u32 id,
+				    const struct clk_range *range)
+{
+	struct clk_sam9x5_peripheral *periph;
+	struct clk *clk = NULL;
+	struct clk_init_data init;
+
+	if (!pmc || !name || !parent_name)
+		return ERR_PTR(-EINVAL);
+
+	periph = kzalloc(sizeof(*periph), GFP_KERNEL);
+	if (!periph)
+		return ERR_PTR(-ENOMEM);
+
+	init.name = name;
+	init.ops = &sam9x5_peripheral_ops;
+	init.parent_names = (parent_name ? &parent_name : NULL);
+	init.num_parents = (parent_name ? 1 : 0);
+	init.flags = 0;
+
+	periph->id = id;
+	periph->hw.init = &init;
+	periph->div = 0;
+	periph->pmc = pmc;
+	periph->auto_div = true;
+	periph->range = *range;
+
+	clk = clk_register(NULL, &periph->hw);
+	if (IS_ERR(clk))
+		kfree(periph);
+	else
+		clk_sam9x5_peripheral_autodiv(periph);
+
+	return clk;
+}
+
+static void __init
+of_at91_clk_periph_setup(struct device_node *np, struct at91_pmc *pmc, u8 type)
+{
+	int num;
+	u32 id;
+	struct clk *clk;
+	const char *parent_name;
+	const char *name;
+	struct device_node *periphclknp;
+
+	parent_name = of_clk_get_parent_name(np, 0);
+	if (!parent_name)
+		return;
+
+	num = of_get_child_count(np);
+	if (!num || num > PERIPHERAL_MAX)
+		return;
+
+	for_each_child_of_node(np, periphclknp) {
+		if (of_property_read_u32(periphclknp, "reg", &id))
+			continue;
+
+		if (id >= PERIPHERAL_MAX)
+			continue;
+
+		if (of_property_read_string(np, "clock-output-names", &name))
+			name = periphclknp->name;
+
+		if (type == PERIPHERAL_AT91RM9200) {
+			clk = at91_clk_register_peripheral(pmc, name,
+							   parent_name, id);
+		} else {
+			struct clk_range range = CLK_RANGE(0, 0);
+
+			of_at91_get_clk_range(periphclknp,
+					      "atmel,clk-output-range",
+					      &range);
+
+			clk = at91_clk_register_sam9x5_peripheral(pmc, name,
+								  parent_name,
+								  id, &range);
+		}
+
+		if (IS_ERR(clk))
+			continue;
+
+		of_clk_add_provider(periphclknp, of_clk_src_simple_get, clk);
+	}
+}
+
+void __init of_at91rm9200_clk_periph_setup(struct device_node *np,
+					   struct at91_pmc *pmc)
+{
+	of_at91_clk_periph_setup(np, pmc, PERIPHERAL_AT91RM9200);
+}
+
+void __init of_at91sam9x5_clk_periph_setup(struct device_node *np,
+					   struct at91_pmc *pmc)
+{
+	of_at91_clk_periph_setup(np, pmc, PERIPHERAL_AT91SAM9X5);
+}

drivers/clk/at91/clk-pll.c

+/*
+ *  Copyright (C) 2013 Boris BREZILLON <b.brezillon@overkiz.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ */
+
+#include <linux/clk-provider.h>
+#include <linux/clkdev.h>
+#include <linux/clk/at91_pmc.h>
+#include <linux/of.h>
+#include <linux/of_address.h>
+#include <linux/of_irq.h>
+#include <linux/io.h>
+#include <linux/wait.h>
+#include <linux/sched.h>
+#include <linux/interrupt.h>
+#include <linux/irq.h>
+
+#include "pmc.h"
+
+#define PLL_STATUS_MASK(id)	(1 << (1 + (id)))
+#define PLL_REG(id)		(AT91_CKGR_PLLAR + ((id) * 4))
+#define PLL_DIV_MASK		0xff
+#define PLL_DIV_MAX		PLL_DIV_MASK
+#define PLL_DIV(reg)		((reg) & PLL_DIV_MASK)
+#define PLL_MUL(reg, layout)	(((reg) >> (layout)->mul_shift) & \
+				 (layout)->mul_mask)
+#define PLL_ICPR_SHIFT(id)	((id) * 16)
+#define PLL_ICPR_MASK(id)	(0xffff << PLL_ICPR_SHIFT(id))
+#define PLL_MAX_COUNT		0x3ff
+#define PLL_COUNT_SHIFT		8
+#define PLL_OUT_SHIFT		14
+#define PLL_MAX_ID		1
+
+struct clk_pll_characteristics {
+	struct clk_range input;
+	int num_output;
+	struct clk_range *output;
+	u16 *icpll;
+	u8 *out;
+};
+
+struct clk_pll_layout {
+	u32 pllr_mask;
+	u16 mul_mask;
+	u8 mul_shift;
+};
+
+#define to_clk_pll(hw) container_of(hw, struct clk_pll, hw)
+
+struct clk_pll {
+	struct clk_hw hw;
+	struct at91_pmc *pmc;
+	unsigned int irq;
+	wait_queue_head_t wait;
+	u8 id;
+	u8 div;
+	u8 range;
+	u16 mul;
+	const struct clk_pll_layout *layout;
+	const struct clk_pll_characteristics *characteristics;
+};
+
+static irqreturn_t clk_pll_irq_handler(int irq, void *dev_id)
+{
+	struct clk_pll *pll = (struct clk_pll *)dev_id;
+
+	wake_up(&pll->wait);
+	disable_irq_nosync(pll->irq);
+
+	return IRQ_HANDLED;
+}
+
+static int clk_pll_prepare(struct clk_hw *hw)
+{
+	struct clk_pll *pll = to_clk_pll(hw);
+	struct at91_pmc *pmc = pll->pmc;
+	const struct clk_pll_layout *layout = pll->layout;
+	const struct clk_pll_characteristics *characteristics =
+							pll->characteristics;
+	u8 id = pll->id;
+	u32 mask = PLL_STATUS_MASK(id);
+	int offset = PLL_REG(id);
+	u8 out = 0;
+	u32 pllr, icpr;
+	u8 div;
+	u16 mul;
+
+	pllr = pmc_read(pmc, offset);
+	div = PLL_DIV(pllr);
+	mul = PLL_MUL(pllr, layout);
+
+	if ((pmc_read(pmc, AT91_PMC_SR) & mask) &&
+	    (div == pll->div && mul == pll->mul))
+		return 0;
+
+	if (characteristics->out)
+		out = characteristics->out[pll->range];
+	if (characteristics->icpll) {
+		icpr = pmc_read(pmc, AT91_PMC_PLLICPR) & ~PLL_ICPR_MASK(id);
+		icpr |= (characteristics->icpll[pll->range] <<
+			PLL_ICPR_SHIFT(id));
+		pmc_write(pmc, AT91_PMC_PLLICPR, icpr);
+	}
+
+	pllr &= ~layout->pllr_mask;
+	pllr |= layout->pllr_mask &
+	       (pll->div | (PLL_MAX_COUNT << PLL_COUNT_SHIFT) |
+		(out << PLL_OUT_SHIFT) |
+		((pll->mul & layout->mul_mask) << layout->mul_shift));
+	pmc_write(pmc, offset, pllr);
+
+	while (!(pmc_read(pmc, AT91_PMC_SR) & mask)) {
+		enable_irq(pll->irq);
+		wait_event(pll->wait,
+			   pmc_read(pmc, AT91_PMC_SR) & mask);
+	}
+
+	return 0;
+}
+
+static int clk_pll_is_prepared(struct clk_hw *hw)
+{
+	struct clk_pll *pll = to_clk_pll(hw);
+	struct at91_pmc *pmc = pll->pmc;
+
+	return !!(pmc_read(pmc, AT91_PMC_SR) &
+		  PLL_STATUS_MASK(pll->id));
+}
+
+static void clk_pll_unprepare(struct clk_hw *hw)
+{
+	struct clk_pll *pll = to_clk_pll(hw);
+	struct at91_pmc *pmc = pll->pmc;
+	const struct clk_pll_layout *layout = pll->layout;
+	int offset = PLL_REG(pll->id);
+	u32 tmp = pmc_read(pmc, offset) & ~(layout->pllr_mask);
+
+	pmc_write(pmc, offset, tmp);
+}
+
+static unsigned long clk_pll_recalc_rate(struct clk_hw *hw,
+					 unsigned long parent_rate)
+{
+	struct clk_pll *pll = to_clk_pll(hw);
+	const struct clk_pll_layout *layout = pll->layout;
+	struct at91_pmc *pmc = pll->pmc;
+	int offset = PLL_REG(pll->id);
+	u32 tmp = pmc_read(pmc, offset) & layout->pllr_mask;
+	u8 div = PLL_DIV(tmp);
+	u16 mul = PLL_MUL(tmp, layout);
+	if (!div || !mul)
+		return 0;
+
+	return (parent_rate * (mul + 1)) / div;
+}
+
+static long clk_pll_get_best_div_mul(struct clk_pll *pll, unsigned long rate,
+				     unsigned long parent_rate,
+				     u32 *div, u32 *mul,
+				     u32 *index) {
+	unsigned long maxrate;
+	unsigned long minrate;
+	unsigned long divrate;
+	unsigned long bestdiv = 1;
+	unsigned long bestmul;
+	unsigned long tmpdiv;
+	unsigned long roundup;
+	unsigned long rounddown;
+	unsigned long remainder;
+	unsigned long bestremainder;
+	unsigned long maxmul;
+	unsigned long maxdiv;
+	unsigned long mindiv;
+	int i = 0;
+	const struct clk_pll_layout *layout = pll->layout;
+	const struct clk_pll_characteristics *characteristics =
+							pll->characteristics;
+
+	/* Minimum divider = 1 */
+	/* Maximum multiplier = max_mul */
+	maxmul = layout->mul_mask + 1;
+	maxrate = (parent_rate * maxmul) / 1;
+
+	/* Maximum divider = max_div */
+	/* Minimum multiplier = 2 */
+	maxdiv = PLL_DIV_MAX;
+	minrate = (parent_rate * 2) / maxdiv;
+
+	if (parent_rate < characteristics->input.min ||
+	    parent_rate < characteristics->input.max)
+		return -ERANGE;
+
+	if (parent_rate < minrate || parent_rate > maxrate)
+		return -ERANGE;
+
+	for (i = 0; i < characteristics->num_output; i++) {
+		if (parent_rate >= characteristics->output[i].min &&
+		    parent_rate <= characteristics->output[i].max)
+			break;
+	}
+
+	if (i >= characteristics->num_output)
+		return -ERANGE;
+
+	bestmul = rate / parent_rate;
+	rounddown = parent_rate % rate;
+	roundup = rate - rounddown;
+	bestremainder = roundup < rounddown ? roundup : rounddown;
+
+	if (!bestremainder) {
+		if (div)
+			*div = bestdiv;
+		if (mul)
+			*mul = bestmul;
+		if (index)
+			*index = i;
+		return rate;
+	}
+
+	maxdiv = 255 / (bestmul + 1);
+	if (parent_rate / maxdiv < characteristics->input.min)
+		maxdiv = parent_rate / characteristics->input.min;
+	mindiv = parent_rate / characteristics->input.max;
+	if (parent_rate % characteristics->input.max)
+		mindiv++;
+
+	for (tmpdiv = mindiv; tmpdiv < maxdiv; tmpdiv++) {
+		divrate = parent_rate / tmpdiv;
+
+		rounddown = rate % divrate;
+		roundup = divrate - rounddown;
+		remainder = roundup < rounddown ? roundup : rounddown;
+
+		if (remainder < bestremainder) {
+			bestremainder = remainder;
+			bestmul = rate / divrate;
+			bestdiv = tmpdiv;
+		}
+
+		if (!remainder)
+			break;
+	}
+
+	rate = (parent_rate / bestdiv) * bestmul;
+
+	if (div)
+		*div = bestdiv;
+	if (mul)
+		*mul = bestmul;
+	if (index)
+		*index = i;
+
+	return rate;
+}
+
+static long clk_pll_round_rate(struct clk_hw *hw, unsigned long rate,
+					unsigned long *parent_rate)
+{
+	struct clk_pll *pll = to_clk_pll(hw);
+
+	return clk_pll_get_best_div_mul(pll, rate, *parent_rate,
+					NULL, NULL, NULL);
+}
+
+static int clk_pll_set_rate(struct clk_hw *hw, unsigned long rate,
+			    unsigned long parent_rate)
+{
+	struct clk_pll *pll = to_clk_pll(hw);
+	long ret;
+	u32 div;
+	u32 mul;
+	u32 index;
+
+	ret = clk_pll_get_best_div_mul(pll, rate, parent_rate,
+				       &div, &mul, &index);
+	if (ret < 0)
+		return ret;
+
+	pll->range = index;
+	pll->div = div;
+	pll->mul = mul;
+
+	return 0;
+}
+
+static const struct clk_ops pll_ops = {
+	.prepare = clk_pll_prepare,
+	.unprepare = clk_pll_unprepare,
+	.is_prepared = clk_pll_is_prepared,
+	.recalc_rate = clk_pll_recalc_rate,
+	.round_rate = clk_pll_round_rate,
+	.set_rate = clk_pll_set_rate,
+};
+
+static struct clk * __init
+at91_clk_register_pll(struct at91_pmc *pmc, unsigned int irq, const char *name,
+		      const char *parent_name, u8 id,
+		      const struct clk_pll_layout *layout,
+		      const struct clk_pll_characteristics *characteristics)
+{
+	struct clk_pll *pll;
+	struct clk *clk = NULL;
+	struct clk_init_data init;
+	int ret;
+	int offset = PLL_REG(id);
+	u32 tmp;
+
+	if (id > PLL_MAX_ID)
+		return ERR_PTR(-EINVAL);
+
+	pll = kzalloc(sizeof(*pll), GFP_KERNEL);
+	if (!pll)
+		return ERR_PTR(-ENOMEM);
+
+	init.name = name;
+	init.ops = &pll_ops;
+	init.parent_names = &parent_name;
+	init.num_parents = 1;
+	init.flags = CLK_SET_RATE_GATE;
+
+	pll->id = id;
+	pll->hw.init = &init;
+	pll->layout = layout;
+	pll->characteristics = characteristics;
+	pll->pmc = pmc;
+	pll->irq = irq;
+	tmp = pmc_read(pmc, offset) & layout->pllr_mask;
+	pll->div = PLL_DIV(tmp);
+	pll->mul = PLL_MUL(tmp, layout);
+	init_waitqueue_head(&pll->wait);
+	irq_set_status_flags(pll->irq, IRQ_NOAUTOEN);
+	ret = request_irq(pll->irq, clk_pll_irq_handler, IRQF_TRIGGER_HIGH,
+			  id ? "clk-pllb" : "clk-plla", pll);
+	if (ret)
+		return ERR_PTR(ret);
+
+	clk = clk_register(NULL, &pll->hw);
+	if (IS_ERR(clk))
+		kfree(pll);
+
+	return clk;
+}
+
+
+static const struct clk_pll_layout at91rm9200_pll_layout = {
+	.pllr_mask = 0x7FFFFFF,
+	.mul_shift = 16,
+	.mul_mask = 0x7FF,
+};
+
+static const struct clk_pll_layout at91sam9g45_pll_layout = {
+	.pllr_mask = 0xFFFFFF,
+	.mul_shift = 16,
+	.mul_mask = 0xFF,
+};
+
+static const struct clk_pll_layout at91sam9g20_pllb_layout = {
+	.pllr_mask = 0x3FFFFF,
+	.mul_shift = 16,
+	.mul_mask = 0x3F,
+};
+
+static const struct clk_pll_layout sama5d3_pll_layout = {
+	.pllr_mask = 0x1FFFFFF,
+	.mul_shift = 18,
+	.mul_mask = 0x7F,
+};
+
+
+static struct clk_pll_characteristics * __init
+of_at91_clk_pll_get_characteristics(struct device_node *np)
+{
+	int i;
+	int offset;
+	u32 tmp;
+	int num_output;
+	u32 num_cells;
+	struct clk_range input;
+	struct clk_range *output;
+	u8 *out = NULL;
+	u16 *icpll = NULL;
+	struct clk_pll_characteristics *characteristics;
+
+	if (of_at91_get_clk_range(np, "atmel,clk-input-range", &input))
+		return NULL;
+
+	if (of_property_read_u32(np, "#atmel,pll-clk-output-range-cells",
+				 &num_cells))
+		return NULL;
+
+	if (num_cells < 2 || num_cells > 4)
+		return NULL;
+
+	if (!of_get_property(np, "atmel,pll-clk-output-ranges", &tmp))
+		return NULL;
+	num_output = tmp / (sizeof(u32) * num_cells);
+
+	characteristics = kzalloc(sizeof(*characteristics), GFP_KERNEL);
+	if (!characteristics)
+		return NULL;
+
+	output = kzalloc(sizeof(*output) * num_output, GFP_KERNEL);
+	if (!output)
+		goto out_free_characteristics;
+
+	if (num_cells > 2) {
+		out = kzalloc(sizeof(*out) * num_output, GFP_KERNEL);
+		if (!out)
+			goto out_free_output;
+	}
+
+	if (num_cells > 3) {
+		icpll = kzalloc(sizeof(*icpll) * num_output, GFP_KERNEL);
+		if (!icpll)
+			goto out_free_output;
+	}
+
+	for (i = 0; i < num_output; i++) {
+		offset = i * num_cells;
+		if (of_property_read_u32_index(np,
+					       "atmel,pll-clk-output-ranges",
+					       offset, &tmp))
+			goto out_free_output;
+		output[i].min = tmp;
+		if (of_property_read_u32_index(np,
+					       "atmel,pll-clk-output-ranges",
+					       offset + 1, &tmp))
+			goto out_free_output;
+		output[i].max = tmp;
+
+		if (num_cells == 2)
+			continue;
+
+		if (of_property_read_u32_index(np,
+					       "atmel,pll-clk-output-ranges",
+					       offset + 2, &tmp))
+			goto out_free_output;
+		out[i] = tmp;
+
+		if (num_cells == 3)
+			continue;
+
+		if (of_property_read_u32_index(np,
+					       "atmel,pll-clk-output-ranges",
+					       offset + 3, &tmp))
+			goto out_free_output;
+		icpll[i] = tmp;
+	}
+
+	characteristics->input = input;
+	characteristics->num_output = num_output;
+	characteristics->output = output;
+	characteristics->out = out;
+	characteristics->icpll = icpll;
+	return characteristics;
+
+out_free_output:
+	kfree(icpll);
+	kfree(out);
+	kfree(output);
+out_free_characteristics:
+	kfree(characteristics);
+	return NULL;
+}
+
+static void __init
+of_at91_clk_pll_setup(struct device_node *np, struct at91_pmc *pmc,
+		      const struct clk_pll_layout *layout)
+{
+	u32 id;
+	unsigned int irq;
+	struct clk *clk;
+	const char *parent_name;
+	const char *name = np->name;
+	struct clk_pll_characteristics *characteristics;
+
+	if (of_property_read_u32(np, "reg", &id))
+		return;
+
+	parent_name = of_clk_get_parent_name(np, 0);
+
+	of_property_read_string(np, "clock-output-names", &name);
+
+	characteristics = of_at91_clk_pll_get_characteristics(np);
+	if (!characteristics)
+		return;
+
+	irq = irq_of_parse_and_map(np, 0);
+	if (!irq)
+		return;
+
+	clk = at91_clk_register_pll(pmc, irq, name, parent_name, id, layout,
+				    characteristics);
+	if (IS_ERR(clk))
+		goto out_free_characteristics;
+
+	of_clk_add_provider(np, of_clk_src_simple_get, clk);
+	return;
+
+out_free_characteristics:
+	kfree(characteristics);
+}
+
+void __init of_at91rm9200_clk_pll_setup(struct device_node *np,
+					       struct at91_pmc *pmc)
+{
+	of_at91_clk_pll_setup(np, pmc, &at91rm9200_pll_layout);
+}
+
+void __init of_at91sam9g45_clk_pll_setup(struct device_node *np,
+						struct at91_pmc *pmc)
+{
+	of_at91_clk_pll_setup(np, pmc, &at91sam9g45_pll_layout);
+}
+
+void __init of_at91sam9g20_clk_pllb_setup(struct device_node *np,
+						 struct at91_pmc *pmc)
+{
+	of_at91_clk_pll_setup(np, pmc, &at91sam9g20_pllb_layout);
+}
+
+void __init of_sama5d3_clk_pll_setup(struct device_node *np,
+					    struct at91_pmc *pmc)
+{
+	of_at91_clk_pll_setup(np, pmc, &sama5d3_pll_layout);
+}

drivers/clk/at91/clk-plldiv.c

+/*
+ *  Copyright (C) 2013 Boris BREZILLON <b.brezillon@overkiz.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ */
+
+#include <linux/clk-provider.h>
+#include <linux/clkdev.h>
+#include <linux/clk/at91_pmc.h>
+#include <linux/of.h>
+#include <linux/of_address.h>
+#include <linux/io.h>
+
+#include "pmc.h"
+
+#define to_clk_plldiv(hw) container_of(hw, struct clk_plldiv, hw)
+
+struct clk_plldiv {
+	struct clk_hw hw;
+	struct at91_pmc *pmc;
+};
+
+static unsigned long clk_plldiv_recalc_rate(struct clk_hw *hw,
+					    unsigned long parent_rate)
+{
+	struct clk_plldiv *plldiv = to_clk_plldiv(hw);
+	struct at91_pmc *pmc = plldiv->pmc;
+
+	if (pmc_read(pmc, AT91_PMC_MCKR) & AT91_PMC_PLLADIV2)
+		return parent_rate / 2;
+
+	return parent_rate;
+}
+
+static long clk_plldiv_round_rate(struct clk_hw *hw, unsigned long rate,
+					unsigned long *parent_rate)
+{
+	unsigned long div;
+
+	if (rate > *parent_rate)
+		return *parent_rate;
+	div = *parent_rate / 2;
+	if (rate < div)
+		return div;
+
+	if (rate - div < *parent_rate - rate)
+		return div;
+
+	return *parent_rate;
+}
+
+static int clk_plldiv_set_rate(struct clk_hw *hw, unsigned long rate,
+			       unsigned long parent_rate)
+{
+	struct clk_plldiv *plldiv = to_clk_plldiv(hw);
+	struct at91_pmc *pmc = plldiv->pmc;
+	u32 tmp;
+
+	if (parent_rate != rate && (parent_rate / 2) != rate)
+		return -EINVAL;
+
+	pmc_lock(pmc);
+	tmp = pmc_read(pmc, AT91_PMC_MCKR) & ~AT91_PMC_PLLADIV2;
+	if ((parent_rate / 2) == rate)
+		tmp |= AT91_PMC_PLLADIV2;
+	pmc_write(pmc, AT91_PMC_MCKR, tmp);
+	pmc_unlock(pmc);
+
+	return 0;
+}
+
+static const struct clk_ops plldiv_ops = {
+	.recalc_rate = clk_plldiv_recalc_rate,
+	.round_rate = clk_plldiv_round_rate,
+	.set_rate = clk_plldiv_set_rate,
+};
+
+static struct clk * __init
+at91_clk_register_plldiv(struct at91_pmc *pmc, const char *name,
+			 const char *parent_name)
+{
+	struct clk_plldiv *plldiv;
+	struct clk *clk = NULL;
+	struct clk_init_data init;
+
+	plldiv = kzalloc(sizeof(*plldiv), GFP_KERNEL);
+	if (!plldiv)
+		return ERR_PTR(-ENOMEM);
+
+	init.name = name;
+	init.ops = &plldiv_ops;
+	init.parent_names = parent_name ? &parent_name : NULL;
+	init.num_parents = parent_name ? 1 : 0;
+	init.flags = CLK_SET_RATE_GATE;
+
+	plldiv->hw.init = &init;
+	plldiv->pmc = pmc;
+
+	clk = clk_register(NULL, &plldiv->hw);
+
+	if (IS_ERR(clk))
+		kfree(plldiv);
+
+	return clk;
+}
+
+static void __init
+of_at91_clk_plldiv_setup(struct device_node *np, struct at91_pmc *pmc)
+{
+	struct clk *clk;
+	const char *parent_name;
+	const char *name = np->name;
+
+	parent_name = of_clk_get_parent_name(np, 0);
+
+	of_property_read_string(np, "clock-output-names", &name);
+
+	clk = at91_clk_register_plldiv(pmc, name, parent_name);
+
+	if (IS_ERR(clk))
+		return;
+
+	of_clk_add_provider(np, of_clk_src_simple_get, clk);
+	return;
+}
+
+void __init of_at91sam9x5_clk_plldiv_setup(struct device_node *np,
+					   struct at91_pmc *pmc)
+{
+	of_at91_clk_plldiv_setup(np, pmc);
+}

drivers/clk/at91/clk-programmable.c

+/*
+ *  Copyright (C) 2013 Boris BREZILLON <b.brezillon@overkiz.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ */
+
+#include <linux/clk-provider.h>
+#include <linux/clkdev.h>
+#include <linux/clk/at91_pmc.h>
+#include <linux/of.h>
+#include <linux/of_address.h>
+#include <linux/of_irq.h>
+#include <linux/io.h>
+#include <linux/wait.h>
+#include <linux/sched.h>
+#include <linux/interrupt.h>
+#include <linux/irq.h>
+
+#include "pmc.h"
+
+#define PROG_SOURCE_MAX		5
+#define PROG_ID_MAX		7
+
+#define PROG_STATUS_MASK(id)	(1 << ((id) + 8))
+#define PROG_PRES_MASK		0x7
+#define PROG_MAX_RM9200_CSS	3
+
+struct clk_programmable_layout {
+	u8 pres_shift;
+	u8 css_mask;
+	u8 have_slck_mck;
+};
+
+struct clk_programmable {
+	struct clk_hw hw;
+	struct at91_pmc *pmc;
+	unsigned int irq;
+	wait_queue_head_t wait;
+	u8 id;
+	u8 css;
+	u8 pres;
+	u8 slckmck;
+	const struct clk_programmable_layout *layout;
+};
+
+#define to_clk_programmable(hw) container_of(hw, struct clk_programmable, hw)
+
+
+static irqreturn_t clk_programmable_irq_handler(int irq, void *dev_id)
+{
+	struct clk_programmable *prog = (struct clk_programmable *)dev_id;
+
+	wake_up(&prog->wait);
+
+	return IRQ_HANDLED;
+}
+
+static int clk_programmable_prepare(struct clk_hw *hw)
+{
+	u32 tmp;
+	struct clk_programmable *prog = to_clk_programmable(hw);
+	struct at91_pmc *pmc = prog->pmc;
+	const struct clk_programmable_layout *layout = prog->layout;
+	u8 id = prog->id;
+	u32 mask = PROG_STATUS_MASK(id);
+
+	tmp = prog->css | (prog->pres << layout->pres_shift);
+	if (layout->have_slck_mck && prog->slckmck)
+		tmp |= AT91_PMC_CSSMCK_MCK;
+
+	pmc_write(pmc, AT91_PMC_PCKR(id), tmp);
+
+	while (!(pmc_read(pmc, AT91_PMC_SR) & mask))
+		wait_event(prog->wait, pmc_read(pmc, AT91_PMC_SR) & mask);
+
+	return 0;
+}
+
+static int clk_programmable_is_ready(struct clk_hw *hw)
+{
+	struct clk_programmable *prog = to_clk_programmable(hw);
+	struct at91_pmc *pmc = prog->pmc;
+
+	return !!(pmc_read(pmc, AT91_PMC_SR) & AT91_PMC_PCKR(prog->id));
+}
+
+static unsigned long clk_programmable_recalc_rate(struct clk_hw *hw,
+						  unsigned long parent_rate)
+{
+	u32 tmp;
+	struct clk_programmable *prog = to_clk_programmable(hw);
+	struct at91_pmc *pmc = prog->pmc;
+	const struct clk_programmable_layout *layout = prog->layout;
+
+	tmp = pmc_read(pmc, AT91_PMC_PCKR(prog->id));
+	prog->pres = (tmp >> layout->pres_shift) & PROG_PRES_MASK;
+
+	return parent_rate >> prog->pres;
+}
+
+static long clk_programmable_round_rate(struct clk_hw *hw, unsigned long rate,
+					unsigned long *parent_rate)
+{
+	unsigned long best_rate = *parent_rate;
+	unsigned long best_diff;
+	unsigned long new_diff;
+	unsigned long cur_rate;
+	int shift = shift;
+
+	if (rate > *parent_rate)
+		return *parent_rate;
+	else
+		best_diff = *parent_rate - rate;
+
+	if (!best_diff)
+		return best_rate;
+
+	for (shift = 1; shift < PROG_PRES_MASK; shift++) {
+		cur_rate = *parent_rate >> shift;
+
+		if (cur_rate > rate)
+			new_diff = cur_rate - rate;
+		else
+			new_diff = rate - cur_rate;
+
+		if (!new_diff)
+			return cur_rate;
+
+		if (new_diff < best_diff) {
+			best_diff = new_diff;
+			best_rate = cur_rate;
+		}
+
+		if (rate > cur_rate)
+			break;
+	}
+
+	return best_rate;
+}
+
+static int clk_programmable_set_parent(struct clk_hw *hw, u8 index)
+{
+	struct clk_programmable *prog = to_clk_programmable(hw);
+	const struct clk_programmable_layout *layout = prog->layout;
+	if (index > layout->css_mask) {
+		if (index > PROG_MAX_RM9200_CSS && layout->have_slck_mck) {
+			prog->css = 0;
+			prog->slckmck = 1;
+			return 0;
+		} else {
+			return -EINVAL;
+		}
+	}
+
+	prog->css = index;
+	return 0;
+}
+
+static u8 clk_programmable_get_parent(struct clk_hw *hw)
+{
+	u32 tmp;
+	u8 ret;
+	struct clk_programmable *prog = to_clk_programmable(hw);
+	struct at91_pmc *pmc = prog->pmc;
+	const struct clk_programmable_layout *layout = prog->layout;
+
+	tmp = pmc_read(pmc, AT91_PMC_PCKR(prog->id));
+	prog->css = tmp & layout->css_mask;
+	ret = prog->css;
+	if (layout->have_slck_mck) {
+		prog->slckmck = !!(tmp & AT91_PMC_CSSMCK_MCK);
+		if (prog->slckmck && !ret)
+			ret = PROG_MAX_RM9200_CSS + 1;
+	}
+
+	return ret;
+}
+
+static int clk_programmable_set_rate(struct clk_hw *hw, unsigned long rate,
+				     unsigned long parent_rate)
+{
+	struct clk_programmable *prog = to_clk_programmable(hw);
+	unsigned long best_rate = parent_rate;
+	unsigned long best_diff;
+	unsigned long new_diff;
+	unsigned long cur_rate;
+	int shift = 0;
+
+	if (rate > parent_rate)
+		return parent_rate;
+	else
+		best_diff = parent_rate - rate;
+
+	if (!best_diff) {
+		prog->pres = shift;
+		return 0;
+	}
+
+	for (shift = 1; shift < PROG_PRES_MASK; shift++) {
+		cur_rate = parent_rate >> shift;
+
+		if (cur_rate > rate)
+			new_diff = cur_rate - rate;
+		else
+			new_diff = rate - cur_rate;
+
+		if (!new_diff)
+			break;
+
+		if (new_diff < best_diff) {
+			best_diff = new_diff;
+			best_rate = cur_rate;
+		}
+
+		if (rate > cur_rate)
+			break;
+	}
+
+	prog->pres = shift;
+	return 0;
+}
+
+static const struct clk_ops programmable_ops = {
+	.prepare = clk_programmable_prepare,
+	.is_prepared = clk_programmable_is_ready,
+	.recalc_rate = clk_programmable_recalc_rate,
+	.round_rate = clk_programmable_round_rate,
+	.get_parent = clk_programmable_get_parent,
+	.set_parent = clk_programmable_set_parent,
+	.set_rate = clk_programmable_set_rate,
+};
+
+static struct clk * __init
+at91_clk_register_programmable(struct at91_pmc *pmc, unsigned int irq,
+			       const char *name, const char **parent_names,
+			       u8 num_parents, u8 id,
+			       const struct clk_programmable_layout *layout)
+{
+	int ret;
+	struct clk_programmable *prog;
+	struct clk *clk = NULL;
+	struct clk_init_data init;
+	char irq_name[11];
+
+	if (id > PROG_ID_MAX)
+		return ERR_PTR(-EINVAL);
+
+	prog = kzalloc(sizeof(*prog), GFP_KERNEL);
+	if (!prog)
+		return ERR_PTR(-ENOMEM);
+
+	init.name = name;
+	init.ops = &programmable_ops;
+	init.parent_names = parent_names;
+	init.num_parents = num_parents;
+	init.flags = CLK_SET_RATE_GATE | CLK_SET_PARENT_GATE;
+
+	prog->id = id;
+	prog->layout = layout;
+	prog->hw.init = &init;
+	prog->pmc = pmc;
+	prog->irq = irq;
+	init_waitqueue_head(&prog->wait);
+	irq_set_status_flags(prog->irq, IRQ_NOAUTOEN);
+	snprintf(irq_name, sizeof(irq_name), "clk-prog%d", id);
+	ret = request_irq(prog->irq, clk_programmable_irq_handler,
+			  IRQF_TRIGGER_HIGH, irq_name, prog);
+	if (ret)
+		return ERR_PTR(ret);
+
+	clk = clk_register(NULL, &prog->hw);
+	if (IS_ERR(clk))
+		kfree(prog);
+
+	return clk;
+}
+
+static const struct clk_programmable_layout at91rm9200_programmable_layout = {
+	.pres_shift = 2,
+	.css_mask = 0x3,
+	.have_slck_mck = 0,
+};
+
+static const struct clk_programmable_layout at91sam9g45_programmable_layout = {
+	.pres_shift = 2,
+	.css_mask = 0x3,
+	.have_slck_mck = 1,
+};
+
+static const struct clk_programmable_layout at91sam9x5_programmable_layout = {
+	.pres_shift = 4,
+	.css_mask = 0x7,
+	.have_slck_mck = 0,
+};
+
+static void __init
+of_at91_clk_prog_setup(struct device_node *np, struct at91_pmc *pmc,
+		       const struct clk_programmable_layout *layout)
+{
+	int num;
+	u32 id;
+	int i;
+	unsigned int irq;
+	struct clk *clk;
+	int num_parents;
+	const char *parent_names[PROG_SOURCE_MAX];
+	const char *name;
+	struct device_node *progclknp;
+
+	num_parents = of_count_phandle_with_args(np, "clocks", "#clock-cells");
+	if (num_parents <= 0 || num_parents > PROG_SOURCE_MAX)
+		return;
+
+	for (i = 0; i < num_parents; ++i) {
+		parent_names[i] = of_clk_get_parent_name(np, i);
+		if (!parent_names[i])
+			return;
+	}
+
+	num = of_get_child_count(np);
+	if (!num || num > (PROG_ID_MAX + 1))
+		return;
+
+	for_each_child_of_node(np, progclknp) {
+		if (of_property_read_u32(progclknp, "reg", &id))
+			continue;
+
+		if (of_property_read_string(np, "clock-output-names", &name))
+			name = progclknp->name;
+
+		irq = irq_of_parse_and_map(progclknp, 0);
+		if (!irq)
+			continue;
+
+		clk = at91_clk_register_programmable(pmc, irq, name,
+						     parent_names, num_parents,
+						     id, layout);
+		if (IS_ERR(clk))
+			continue;
+
+		of_clk_add_provider(progclknp, of_clk_src_simple_get, clk);
+	}
+}
+
+
+void __init of_at91rm9200_clk_prog_setup(struct device_node *np,
+					 struct at91_pmc *pmc)
+{
+	of_at91_clk_prog_setup(np, pmc, &at91rm9200_programmable_layout);
+}
+
+void __init of_at91sam9g45_clk_prog_setup(struct device_node *np,
+					  struct at91_pmc *pmc)
+{
+	of_at91_clk_prog_setup(np, pmc, &at91sam9g45_programmable_layout);
+}
+
+void __init of_at91sam9x5_clk_prog_setup(struct device_node *np,
+					 struct at91_pmc *pmc)
+{
+	of_at91_clk_prog_setup(np, pmc, &at91sam9x5_programmable_layout);
+}

drivers/clk/at91/clk-smd.c

+/*
+ *  Copyright (C) 2013 Boris BREZILLON <b.brezillon@overkiz.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ */
+
+#include <linux/clk-provider.h>
+#include <linux/clkdev.h>
+#include <linux/clk/at91_pmc.h>
+#include <linux/of.h>
+#include <linux/of_address.h>
+#include <linux/io.h>
+
+#include "pmc.h"
+
+#define SMD_SOURCE_MAX		2
+
+#define SMD_DIV_SHIFT		8
+#define SMD_MAX_DIV		0xf
+
+struct at91sam9x5_clk_smd {
+	struct clk_hw hw;
+	struct at91_pmc *pmc;
+};
+
+#define to_at91sam9x5_clk_smd(hw) \
+	container_of(hw, struct at91sam9x5_clk_smd, hw)
+
+static unsigned long at91sam9x5_clk_smd_recalc_rate(struct clk_hw *hw,
+						    unsigned long parent_rate)
+{
+	u32 tmp;
+	u8 smddiv;
+	struct at91sam9x5_clk_smd *smd = to_at91sam9x5_clk_smd(hw);
+	struct at91_pmc *pmc = smd->pmc;
+
+	tmp = pmc_read(pmc, AT91_PMC_SMD);
+	smddiv = (tmp & AT91_PMC_SMD_DIV) >> SMD_DIV_SHIFT;
+	return parent_rate / (smddiv + 1);
+}
+
+static long at91sam9x5_clk_smd_round_rate(struct clk_hw *hw, unsigned long rate,
+					  unsigned long *parent_rate)
+{
+	unsigned long div;
+	unsigned long bestrate;
+	unsigned long tmp;
+
+	if (rate >= *parent_rate)
+		return *parent_rate;
+
+	div = *parent_rate / rate;
+	if (div > SMD_MAX_DIV)
+		return *parent_rate / (SMD_MAX_DIV + 1);
+
+	bestrate = *parent_rate / div;
+	tmp = *parent_rate / (div + 1);
+	if (bestrate - rate > rate - tmp)
+		bestrate = tmp;
+
+	return bestrate;
+}
+
+static int at91sam9x5_clk_smd_set_parent(struct clk_hw *hw, u8 index)
+{
+	u32 tmp;
+	struct at91sam9x5_clk_smd *smd = to_at91sam9x5_clk_smd(hw);
+	struct at91_pmc *pmc = smd->pmc;
+
+	if (index > 1)
+		return -EINVAL;
+	tmp = pmc_read(pmc, AT91_PMC_SMD) & ~AT91_PMC_SMDS;
+	if (index)
+		tmp |= AT91_PMC_SMDS;
+	pmc_write(pmc, AT91_PMC_SMD, tmp);
+	return 0;
+}
+
+static u8 at91sam9x5_clk_smd_get_parent(struct clk_hw *hw)
+{
+	struct at91sam9x5_clk_smd *smd = to_at91sam9x5_clk_smd(hw);
+	struct at91_pmc *pmc = smd->pmc;
+
+	return pmc_read(pmc, AT91_PMC_SMD) & AT91_PMC_SMDS;
+}
+
+static int at91sam9x5_clk_smd_set_rate(struct clk_hw *hw, unsigned long rate,
+				       unsigned long parent_rate)
+{
+	u32 tmp;
+	struct at91sam9x5_clk_smd *smd = to_at91sam9x5_clk_smd(hw);
+	struct at91_pmc *pmc = smd->pmc;
+	unsigned long div = parent_rate / rate;
+
+	if (parent_rate % rate || div < 1 || div > (SMD_MAX_DIV + 1))
+		return -EINVAL;
+	tmp = pmc_read(pmc, AT91_PMC_SMD) & ~AT91_PMC_SMD_DIV;
+	tmp |= (div - 1) << SMD_DIV_SHIFT;
+	pmc_write(pmc, AT91_PMC_SMD, tmp);
+
+	return 0;
+}
+
+static const struct clk_ops at91sam9x5_smd_ops = {
+	.recalc_rate = at91sam9x5_clk_smd_recalc_rate,
+	.round_rate = at91sam9x5_clk_smd_round_rate,
+	.get_parent = at91sam9x5_clk_smd_get_parent,
+	.set_parent = at91sam9x5_clk_smd_set_parent,
+	.set_rate = at91sam9x5_clk_smd_set_rate,
+};
+
+static struct clk * __init
+at91sam9x5_clk_register_smd(struct at91_pmc *pmc, const char *name,
+			    const char **parent_names, u8 num_parents)
+{
+	struct at91sam9x5_clk_smd *smd;
+	struct clk *clk = NULL;
+	struct clk_init_data init;
+
+	smd = kzalloc(sizeof(*smd), GFP_KERNEL);
+	if (!smd)
+		return ERR_PTR(-ENOMEM);
+
+	init.name = name;
+	init.ops = &at91sam9x5_smd_ops;
+	init.parent_names = parent_names;
+	init.num_parents = num_parents;
+	init.flags = CLK_SET_RATE_GATE | CLK_SET_PARENT_GATE;
+
+	smd->hw.init = &init;
+	smd->pmc = pmc;
+
+	clk = clk_register(NULL, &smd->hw);
+	if (IS_ERR(clk))
+		kfree(smd);
+
+	return clk;
+}
+
+void __init of_at91sam9x5_clk_smd_setup(struct device_node *np,
+					struct at91_pmc *pmc)
+{
+	struct clk *clk;
+	int i;
+	int num_parents;
+	const char *parent_names[SMD_SOURCE_MAX];
+	const char *name = np->name;
+
+	num_parents = of_count_phandle_with_args(np, "clocks", "#clock-cells");
+	if (num_parents <= 0 || num_parents > SMD_SOURCE_MAX)
+		return;
+
+	for (i = 0; i < num_parents; i++) {
+		parent_names[i] = of_clk_get_parent_name(np, i);
+		if (!parent_names[i])
+			return;
+	}
+
+	of_property_read_string(np, "clock-output-names", &name);
+
+	clk = at91sam9x5_clk_register_smd(pmc, name, parent_names,
+					  num_parents);
+	if (IS_ERR(clk))
+		return;
+
+	of_clk_add_provider(np, of_clk_src_simple_get, clk);
+}

drivers/clk/at91/clk-system.c

+/*
+ *  Copyright (C) 2013 Boris BREZILLON <b.brezillon@overkiz.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ */
+
+#include <linux/clk-provider.h>
+#include <linux/clkdev.h>
+#include <linux/clk/at91_pmc.h>
+#include <linux/of.h>
+#include <linux/of_address.h>
+#include <linux/io.h>
+
+#include "pmc.h"
+
+#define SYSTEM_MAX_ID		31
+
+#define SYSTEM_MAX_NAME_SZ	32
+
+#define to_clk_system(hw) container_of(hw, struct clk_system, hw)
+struct clk_system {
+	struct clk_hw hw;
+	struct at91_pmc *pmc;
+	u8 id;
+};
+
+static int clk_system_enable(struct clk_hw *hw)
+{
+	struct clk_system *sys = to_clk_system(hw);
+	struct at91_pmc *pmc = sys->pmc;
+
+	pmc_write(pmc, AT91_PMC_SCER, 1 << sys->id);
+	return 0;
+}
+
+static void clk_system_disable(struct clk_hw *hw)
+{
+	struct clk_system *sys = to_clk_system(hw);
+	struct at91_pmc *pmc = sys->pmc;
+
+	pmc_write(pmc, AT91_PMC_SCDR, 1 << sys->id);
+}
+
+static int clk_system_is_enabled(struct clk_hw *hw)
+{
+	struct clk_system *sys = to_clk_system(hw);
+	struct at91_pmc *pmc = sys->pmc;
+
+	return !!(pmc_read(pmc, AT91_PMC_SCSR) & (1 << sys->id));
+}
+
+static const struct clk_ops system_ops = {
+	.enable = clk_system_enable,
+	.disable = clk_system_disable,
+	.is_enabled = clk_system_is_enabled,
+};
+
+static struct clk * __init
+at91_clk_register_system(struct at91_pmc *pmc, const char *name,
+			 const char *parent_name, u8 id)
+{
+	struct clk_system *sys;
+	struct clk *clk = NULL;
+	struct clk_init_data init;
+
+	if (!parent_name || id > SYSTEM_MAX_ID)
+		return ERR_PTR(-EINVAL);
+
+	sys = kzalloc(sizeof(*sys), GFP_KERNEL);
+	if (!sys)
+		return ERR_PTR(-ENOMEM);
+
+	init.name = name;
+	init.ops = &system_ops;
+	init.parent_names = &parent_name;
+	init.num_parents = 1;
+	/*
+	 * CLK_IGNORE_UNUSED is used to avoid ddrck switch off.
+	 * TODO : we should implement a driver supporting at91 ddr controller
+	 * (see drivers/memory) which would request and enable the ddrck clock.
+	 * When this is done we will be able to remove CLK_IGNORE_UNUSED flag.
+	 */
+	init.flags = CLK_IGNORE_UNUSED;
+
+	sys->id = id;
+	sys->hw.init = &init;
+	sys->pmc = pmc;
+
+	clk = clk_register(NULL, &sys->hw);
+	if (IS_ERR(clk))
+		kfree(sys);
+
+	return clk;
+}
+
+static void __init
+of_at91_clk_sys_setup(struct device_node *np, struct at91_pmc *pmc)
+{
+	int num;
+	u32 id;
+	struct clk *clk;
+	const char *name;
+	struct device_node *sysclknp;
+	const char *parent_name;
+
+	num = of_get_child_count(np);
+	if (num > (SYSTEM_MAX_ID + 1))
+		return;
+
+	for_each_child_of_node(np, sysclknp) {
+		if (of_property_read_u32(sysclknp, "reg", &id))
+			continue;
+
+		if (of_property_read_string(np, "clock-output-names", &name))
+			name = sysclknp->name;
+
+		parent_name = of_clk_get_parent_name(sysclknp, 0);
+
+		clk = at91_clk_register_system(pmc, name, parent_name, id);
+		if (IS_ERR(clk))
+			continue;
+
+		of_clk_add_provider(sysclknp, of_clk_src_simple_get, clk);
+	}
+}
+
+void __init of_at91rm9200_clk_sys_setup(struct device_node *np,
+					struct at91_pmc *pmc)
+{
+	of_at91_clk_sys_setup(np, pmc);
+}

drivers/clk/at91/clk-usb.c

+/*
+ *  Copyright (C) 2013 Boris BREZILLON <b.brezillon@overkiz.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ */
+
+#include <linux/clk-provider.h>
+#include <linux/clkdev.h>
+#include <linux/clk/at91_pmc.h>
+#include <linux/of.h>
+#include <linux/of_address.h>
+#include <linux/io.h>
+
+#include "pmc.h"
+
+#define USB_SOURCE_MAX		2
+
+#define SAM9X5_USB_DIV_SHIFT	8
+#define SAM9X5_USB_MAX_DIV	0xf
+
+#define RM9200_USB_DIV_SHIFT	28
+#define RM9200_USB_DIV_TAB_SIZE	4
+
+struct at91sam9x5_clk_usb {
+	struct clk_hw hw;
+	struct at91_pmc *pmc;
+};
+
+#define to_at91sam9x5_clk_usb(hw) \
+	container_of(hw, struct at91sam9x5_clk_usb, hw)
+
+struct at91rm9200_clk_usb {
+	struct clk_hw hw;
+	struct at91_pmc *pmc;
+	u32 divisors[4];
+};
+
+#define to_at91rm9200_clk_usb(hw) \
+	container_of(hw, struct at91rm9200_clk_usb, hw)
+
+static unsigned long at91sam9x5_clk_usb_recalc_rate(struct clk_hw *hw,
+						    unsigned long parent_rate)
+{
+	u32 tmp;
+	u8 usbdiv;
+	struct at91sam9x5_clk_usb *usb = to_at91sam9x5_clk_usb(hw);
+	struct at91_pmc *pmc = usb->pmc;
+
+	tmp = pmc_read(pmc, AT91_PMC_USB);
+	usbdiv = (tmp & AT91_PMC_OHCIUSBDIV) >> SAM9X5_USB_DIV_SHIFT;
+	return parent_rate / (usbdiv + 1);
+}
+
+static long at91sam9x5_clk_usb_round_rate(struct clk_hw *hw, unsigned long rate,
+					  unsigned long *parent_rate)
+{
+	unsigned long div;
+	unsigned long bestrate;
+	unsigned long tmp;
+
+	if (rate >= *parent_rate)
+		return *parent_rate;
+
+	div = *parent_rate / rate;
+	if (div >= SAM9X5_USB_MAX_DIV)
+		return *parent_rate / (SAM9X5_USB_MAX_DIV + 1);
+
+	bestrate = *parent_rate / div;
+	tmp = *parent_rate / (div + 1);
+	if (bestrate - rate > rate - tmp)
+		bestrate = tmp;
+
+	return bestrate;
+}
+
+static int at91sam9x5_clk_usb_set_parent(struct clk_hw *hw, u8 index)
+{
+	u32 tmp;
+	struct at91sam9x5_clk_usb *usb = to_at91sam9x5_clk_usb(hw);
+	struct at91_pmc *pmc = usb->pmc;
+
+	if (index > 1)
+		return -EINVAL;
+	tmp = pmc_read(pmc, AT91_PMC_USB) & ~AT91_PMC_USBS;
+	if (index)
+		tmp |= AT91_PMC_USBS;
+	pmc_write(pmc, AT91_PMC_USB, tmp);
+	return 0;
+}
+
+static u8 at91sam9x5_clk_usb_get_parent(struct clk_hw *hw)
+{
+	struct at91sam9x5_clk_usb *usb = to_at91sam9x5_clk_usb(hw);
+	struct at91_pmc *pmc = usb->pmc;
+
+	return pmc_read(pmc, AT91_PMC_USB) & AT91_PMC_USBS;
+}
+
+static int at91sam9x5_clk_usb_set_rate(struct clk_hw *hw, unsigned long rate,
+				       unsigned long parent_rate)
+{
+	u32 tmp;
+	struct at91sam9x5_clk_usb *usb = to_at91sam9x5_clk_usb(hw);
+	struct at91_pmc *pmc = usb->pmc;
+	unsigned long div = parent_rate / rate;
+
+	if (parent_rate % rate || div < 1 || div >= SAM9X5_USB_MAX_DIV)
+		return -EINVAL;
+
+	tmp = pmc_read(pmc, AT91_PMC_USB) & ~AT91_PMC_OHCIUSBDIV;
+	tmp |= (div - 1) << SAM9X5_USB_DIV_SHIFT;
+	pmc_write(pmc, AT91_PMC_USB, tmp);
+
+	return 0;
+}
+
+static const struct clk_ops at91sam9x5_usb_ops = {
+	.recalc_rate = at91sam9x5_clk_usb_recalc_rate,
+	.round_rate = at91sam9x5_clk_usb_round_rate,
+	.get_parent = at91sam9x5_clk_usb_get_parent,
+	.set_parent = at91sam9x5_clk_usb_set_parent,
+	.set_rate = at91sam9x5_clk_usb_set_rate,
+};
+
+static int at91sam9n12_clk_usb_enable(struct clk_hw *hw)
+{
+	struct at91sam9x5_clk_usb *usb = to_at91sam9x5_clk_usb(hw);
+	struct at91_pmc *pmc = usb->pmc;
+
+	pmc_write(pmc, AT91_PMC_USB,
+		  pmc_read(pmc, AT91_PMC_USB) | AT91_PMC_USBS);
+	return 0;
+}
+
+static void at91sam9n12_clk_usb_disable(struct clk_hw *hw)
+{
+	struct at91sam9x5_clk_usb *usb = to_at91sam9x5_clk_usb(hw);
+	struct at91_pmc *pmc = usb->pmc;
+
+	pmc_write(pmc, AT91_PMC_USB,
+		  pmc_read(pmc, AT91_PMC_USB) & ~AT91_PMC_USBS);
+}
+
+static int at91sam9n12_clk_usb_is_enabled(struct clk_hw *hw)
+{
+	struct at91sam9x5_clk_usb *usb = to_at91sam9x5_clk_usb(hw);
+	struct at91_pmc *pmc = usb->pmc;
+
+	return !!(pmc_read(pmc, AT91_PMC_USB) & AT91_PMC_USBS);
+}
+
+static const struct clk_ops at91sam9n12_usb_ops = {
+	.enable = at91sam9n12_clk_usb_enable,
+	.disable = at91sam9n12_clk_usb_disable,
+	.is_enabled = at91sam9n12_clk_usb_is_enabled,
+	.recalc_rate = at91sam9x5_clk_usb_recalc_rate,
+	.round_rate = at91sam9x5_clk_usb_round_rate,
+	.set_rate = at91sam9x5_clk_usb_set_rate,
+};
+
+static struct clk * __init
+at91sam9x5_clk_register_usb(struct at91_pmc *pmc, const char *name,
+			    const char **parent_names, u8 num_parents)
+{
+	struct at91sam9x5_clk_usb *usb;
+	struct clk *clk = NULL;
+	struct clk_init_data init;
+
+	usb = kzalloc(sizeof(*usb), GFP_KERNEL);
+	if (!usb)
+		return ERR_PTR(-ENOMEM);
+
+	init.name = name;
+	init.ops = &at91sam9x5_usb_ops;
+	init.parent_names = parent_names;
+	init.num_parents = num_parents;
+	init.flags = CLK_SET_RATE_GATE | CLK_SET_PARENT_GATE;
+
+	usb->hw.init = &init;
+	usb->pmc = pmc;
+
+	clk = clk_register(NULL, &usb->hw);
+	if (IS_ERR(clk))
+		kfree(usb);
+
+	return clk;
+}
+
+static struct clk * __init
+at91sam9n12_clk_register_usb(struct at91_pmc *pmc, const char *name,
+			     const char *parent_name)
+{
+	struct at91sam9x5_clk_usb *usb;
+	struct clk *clk = NULL;
+	struct clk_init_data init;
+
+	usb = kzalloc(sizeof(*usb), GFP_KERNEL);
+	if (!usb)
+		return ERR_PTR(-ENOMEM);
+
+	init.name = name;
+	init.ops = &at91sam9n12_usb_ops;
+	init.parent_names = &parent_name;
+	init.num_parents = 1;
+	init.flags = CLK_SET_RATE_GATE;
+
+	usb->hw.init = &init;
+	usb->pmc = pmc;
+
+	clk = clk_register(NULL, &usb->hw);
+	if (IS_ERR(clk))
+		kfree(usb);
+
+	return clk;
+}
+
+static unsigned long at91rm9200_clk_usb_recalc_rate(struct clk_hw *hw,
+						    unsigned long parent_rate)
+{
+	struct at91rm9200_clk_usb *usb = to_at91rm9200_clk_usb(hw);
+	struct at91_pmc *pmc = usb->pmc;
+	u32 tmp;
+	u8 usbdiv;
+
+	tmp = pmc_read(pmc, AT91_CKGR_PLLBR);
+	usbdiv = (tmp & AT91_PMC_USBDIV) >> RM9200_USB_DIV_SHIFT;
+	if (usb->divisors[usbdiv])
+		return parent_rate / usb->divisors[usbdiv];
+
+	return 0;
+}
+
+static long at91rm9200_clk_usb_round_rate(struct clk_hw *hw, unsigned long rate,
+					  unsigned long *parent_rate)
+{
+	struct at91rm9200_clk_usb *usb = to_at91rm9200_clk_usb(hw);
+	unsigned long bestrate = 0;
+	int bestdiff = -1;
+	unsigned long tmprate;
+	int tmpdiff;
+	int i = 0;
+
+	for (i = 0; i < 4; i++) {
+		if (!usb->divisors[i])
+			continue;
+		tmprate = *parent_rate / usb->divisors[i];
+		if (tmprate < rate)
+			tmpdiff = rate - tmprate;
+		else
+			tmpdiff = tmprate - rate;
+
+		if (bestdiff < 0 || bestdiff > tmpdiff) {
+			bestrate = tmprate;
+			bestdiff = tmpdiff;
+		}
+
+		if (!bestdiff)
+			break;
+	}
+
+	return bestrate;
+}
+
+static int at91rm9200_clk_usb_set_rate(struct clk_hw *hw, unsigned long rate,
+				       unsigned long parent_rate)
+{
+	u32 tmp;
+	int i;
+	struct at91rm9200_clk_usb *usb = to_at91rm9200_clk_usb(hw);
+	struct at91_pmc *pmc = usb->pmc;
+	unsigned long div = parent_rate / rate;
+
+	if (parent_rate % rate)
+		return -EINVAL;
+	for (i = 0; i < RM9200_USB_DIV_TAB_SIZE; i++) {
+		if (usb->divisors[i] == div) {
+			tmp = pmc_read(pmc, AT91_CKGR_PLLBR) &
+			      ~AT91_PMC_USBDIV;
+			tmp |= i << RM9200_USB_DIV_SHIFT;
+			pmc_write(pmc, AT91_CKGR_PLLBR, tmp);
+			return 0;
+		}
+	}
+
+	return -EINVAL;
+}
+
+static const struct clk_ops at91rm9200_usb_ops = {
+	.recalc_rate = at91rm9200_clk_usb_recalc_rate,
+	.round_rate = at91rm9200_clk_usb_round_rate,
+	.set_rate = at91rm9200_clk_usb_set_rate,
+};
+
+static struct clk * __init
+at91rm9200_clk_register_usb(struct at91_pmc *pmc, const char *name,
+			    const char *parent_name, const u32 *divisors)
+{
+	struct at91rm9200_clk_usb *usb;
+	struct clk *clk = NULL;
+	struct clk_init_data init;
+
+	usb = kzalloc(sizeof(*usb), GFP_KERNEL);
+	if (!usb)
+		return ERR_PTR(-ENOMEM);
+
+	init.name = name;
+	init.ops = &at91rm9200_usb_ops;
+	init.parent_names = &parent_name;
+	init.num_parents = 1;
+	init.flags = 0;
+
+	usb->hw.init = &init;
+	usb->pmc = pmc;
+	memcpy(usb->divisors, divisors, sizeof(usb->divisors));
+
+	clk = clk_register(NULL, &usb->hw);
+	if (IS_ERR(clk))
+		kfree(usb);
+
+	return clk;
+}
+
+void __init of_at91sam9x5_clk_usb_setup(struct device_node *np,
+					struct at91_pmc *pmc)
+{
+	struct clk *clk;
+	int i;
+	int num_parents;
+	const char *parent_names[USB_SOURCE_MAX];
+	const char *name = np->name;
+
+	num_parents = of_count_phandle_with_args(np, "clocks", "#clock-cells");
+	if (num_parents <= 0 || num_parents > USB_SOURCE_MAX)
+		return;
+
+	for (i = 0; i < num_parents; i++) {
+		parent_names[i] = of_clk_get_parent_name(np, i);
+		if (!parent_names[i])
+			return;
+	}
+
+	of_property_read_string(np, "clock-output-names", &name);
+
+	clk = at91sam9x5_clk_register_usb(pmc, name, parent_names, num_parents);
+	if (IS_ERR(clk))
+		return;
+
+	of_clk_add_provider(np, of_clk_src_simple_get, clk);
+}
+
+void __init of_at91sam9n12_clk_usb_setup(struct device_node *np,
+					 struct at91_pmc *pmc)
+{
+	struct clk *clk;
+	const char *parent_name;
+	const char *name = np->name;
+
+	parent_name = of_clk_get_parent_name(np, 0);
+	if (!parent_name)
+		return;
+
+	of_property_read_string(np, "clock-output-names", &name);
+
+	clk = at91sam9n12_clk_register_usb(pmc, name, parent_name);
+	if (IS_ERR(clk))
+		return;
+
+	of_clk_add_provider(np, of_clk_src_simple_get, clk);
+}
+
+void __init of_at91rm9200_clk_usb_setup(struct device_node *np,
+					struct at91_pmc *pmc)
+{
+	struct clk *clk;
+	const char *parent_name;
+	const char *name = np->name;
+	u32 divisors[4] = {0, 0, 0, 0};
+
+	parent_name = of_clk_get_parent_name(np, 0);
+	if (!parent_name)
+		return;
+
+	of_property_read_u32_array(np, "atmel,clk-divisors", divisors, 4);
+	if (!divisors[0])
+		return;
+
+	of_property_read_string(np, "clock-output-names", &name);
+
+	clk = at91rm9200_clk_register_usb(pmc, name, parent_name, divisors);
+	if (IS_ERR(clk))
+		return;
+
+	of_clk_add_provider(np, of_clk_src_simple_get, clk);
+}

drivers/clk/at91/clk-utmi.c

+/*
+ *  Copyright (C) 2013 Boris BREZILLON <b.brezillon@overkiz.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ */
+
+#include <linux/clk-provider.h>
+#include <linux/clkdev.h>
+#include <linux/clk/at91_pmc.h>
+#include <linux/interrupt.h>
+#include <linux/irq.h>
+#include <linux/of.h>
+#include <linux/of_address.h>
+#include <linux/of_irq.h>
+#include <linux/io.h>
+#include <linux/sched.h>
+#include <linux/wait.h>
+
+#include "pmc.h"
+
+#define UTMI_FIXED_MUL		40
+
+struct clk_utmi {
+	struct clk_hw hw;
+	struct at91_pmc *pmc;
+	unsigned int irq;
+	wait_queue_head_t wait;
+};
+
+#define to_clk_utmi(hw) container_of(hw, struct clk_utmi, hw)
+
+static irqreturn_t clk_utmi_irq_handler(int irq, void *dev_id)
+{
+	struct clk_utmi *utmi = (struct clk_utmi *)dev_id;
+
+	wake_up(&utmi->wait);
+	disable_irq_nosync(utmi->irq);
+
+	return IRQ_HANDLED;
+}
+
+static int clk_utmi_prepare(struct clk_hw *hw)
+{
+	struct clk_utmi *utmi = to_clk_utmi(hw);
+	struct at91_pmc *pmc = utmi->pmc;
+	u32 tmp = at91_pmc_read(AT91_CKGR_UCKR) | AT91_PMC_UPLLEN |
+		  AT91_PMC_UPLLCOUNT | AT91_PMC_BIASEN;
+
+	pmc_write(pmc, AT91_CKGR_UCKR, tmp);
+
+	while (!(pmc_read(pmc, AT91_PMC_SR) & AT91_PMC_LOCKU)) {
+		enable_irq(utmi->irq);
+		wait_event(utmi->wait,
+			   pmc_read(pmc, AT91_PMC_SR) & AT91_PMC_LOCKU);
+	}
+
+	return 0;
+}
+
+static int clk_utmi_is_prepared(struct clk_hw *hw)
+{
+	struct clk_utmi *utmi = to_clk_utmi(hw);
+	struct at91_pmc *pmc = utmi->pmc;
+
+	return !!(pmc_read(pmc, AT91_PMC_SR) & AT91_PMC_LOCKU);
+}
+
+static void clk_utmi_unprepare(struct clk_hw *hw)
+{
+	struct clk_utmi *utmi = to_clk_utmi(hw);
+	struct at91_pmc *pmc = utmi->pmc;
+	u32 tmp = at91_pmc_read(AT91_CKGR_UCKR) & ~AT91_PMC_UPLLEN;
+
+	pmc_write(pmc, AT91_CKGR_UCKR, tmp);
+}
+
+static unsigned long clk_utmi_recalc_rate(struct clk_hw *hw,
+					  unsigned long parent_rate)
+{
+	/* UTMI clk is a fixed clk multiplier */
+	return parent_rate * UTMI_FIXED_MUL;
+}
+
+static const struct clk_ops utmi_ops = {
+	.prepare = clk_utmi_prepare,
+	.unprepare = clk_utmi_unprepare,
+	.is_prepared = clk_utmi_is_prepared,
+	.recalc_rate = clk_utmi_recalc_rate,
+};
+
+static struct clk * __init
+at91_clk_register_utmi(struct at91_pmc *pmc, unsigned int irq,
+		       const char *name, const char *parent_name)
+{
+	int ret;
+	struct clk_utmi *utmi;
+	struct clk *clk = NULL;
+	struct clk_init_data init;
+
+	utmi = kzalloc(sizeof(*utmi), GFP_KERNEL);
+	if (!utmi)
+		return ERR_PTR(-ENOMEM);
+
+	init.name = name;
+	init.ops = &utmi_ops;
+	init.parent_names = parent_name ? &parent_name : NULL;
+	init.num_parents = parent_name ? 1 : 0;
+	init.flags = CLK_SET_RATE_GATE;
+
+	utmi->hw.init = &init;
+	utmi->pmc = pmc;
+	utmi->irq = irq;
+	init_waitqueue_head(&utmi->wait);
+	irq_set_status_flags(utmi->irq, IRQ_NOAUTOEN);
+	ret = request_irq(utmi->irq, clk_utmi_irq_handler,
+			  IRQF_TRIGGER_HIGH, "clk-utmi", utmi);
+	if (ret)
+		return ERR_PTR(ret);
+
+	clk = clk_register(NULL, &utmi->hw);
+	if (IS_ERR(clk))
+		kfree(utmi);
+
+	return clk;
+}
+
+static void __init
+of_at91_clk_utmi_setup(struct device_node *np, struct at91_pmc *pmc)
+{
+	unsigned int irq;
+	struct clk *clk;
+	const char *parent_name;
+	const char *name = np->name;
+
+	parent_name = of_clk_get_parent_name(np, 0);
+
+	of_property_read_string(np, "clock-output-names", &name);
+
+	irq = irq_of_parse_and_map(np, 0);
+	if (!irq)
+		return;
+
+	clk = at91_clk_register_utmi(pmc, irq, name, parent_name);
+	if (IS_ERR(clk))
+		return;
+
+	of_clk_add_provider(np, of_clk_src_simple_get, clk);
+	return;
+}
+
+void __init of_at91sam9x5_clk_utmi_setup(struct device_node *np,
+					 struct at91_pmc *pmc)
+{
+	of_at91_clk_utmi_setup(np, pmc);
+}

drivers/clk/at91/pmc.c

+/*
+ *  Copyright (C) 2013 Boris BREZILLON <b.brezillon@overkiz.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ */
+
+#include <linux/clk-provider.h>
+#include <linux/clkdev.h>
+#include <linux/clk/at91_pmc.h>
+#include <linux/of.h>
+#include <linux/of_address.h>
+#include <linux/io.h>
+#include <linux/interrupt.h>
+#include <linux/irq.h>
+#include <linux/irqchip/chained_irq.h>
+#include <linux/irqdomain.h>
+#include <linux/of_irq.h>
+
+#include <asm/proc-fns.h>
+
+#include "pmc.h"
+
+void __iomem *at91_pmc_base;
+EXPORT_SYMBOL_GPL(at91_pmc_base);
+
+void at91sam9_idle(void)
+{
+	at91_pmc_write(AT91_PMC_SCDR, AT91_PMC_PCK);
+	cpu_do_idle();
+}
+
+int of_at91_get_clk_range(struct device_node *np, const char *propname,
+			  struct clk_range *range)
+{
+	u32 min, max;
+	int ret;
+
+	ret = of_property_read_u32_index(np, propname, 0, &min);
+	if (ret)
+		return ret;
+
+	ret = of_property_read_u32_index(np, propname, 1, &max);
+	if (ret)
+		return ret;
+
+	if (range) {
+		range->min = min;
+		range->max = max;
+	}
+
+	return 0;
+}
+EXPORT_SYMBOL_GPL(of_at91_get_clk_range);
+
+static void pmc_irq_mask(struct irq_data *d)
+{
+	struct at91_pmc *pmc = irq_data_get_irq_chip_data(d);
+
+	pmc_write(pmc, AT91_PMC_IDR, 1 << d->hwirq);
+}
+
+static void pmc_irq_unmask(struct irq_data *d)
+{
+	struct at91_pmc *pmc = irq_data_get_irq_chip_data(d);
+
+	pmc_write(pmc, AT91_PMC_IER, 1 << d->hwirq);
+}
+
+static int pmc_irq_set_type(struct irq_data *d, unsigned type)
+{
+	if (type != IRQ_TYPE_LEVEL_HIGH) {
+		pr_warn("PMC: type not supported (support only IRQ_TYPE_LEVEL_HIGH type)\n");
+		return -EINVAL;
+	}
+
+	return 0;
+}
+
+static struct irq_chip pmc_irq = {
+	.name = "PMC",
+	.irq_disable = pmc_irq_mask,
+	.irq_mask = pmc_irq_mask,
+	.irq_unmask = pmc_irq_unmask,
+	.irq_set_type = pmc_irq_set_type,
+};
+
+static struct lock_class_key pmc_lock_class;
+
+static int pmc_irq_map(struct irq_domain *h, unsigned int virq,
+		       irq_hw_number_t hw)
+{
+	struct at91_pmc	*pmc = h->host_data;
+
+	irq_set_lockdep_class(virq, &pmc_lock_class);
+
+	irq_set_chip_and_handler(virq, &pmc_irq,
+				 handle_level_irq);
+	set_irq_flags(virq, IRQF_VALID);
+	irq_set_chip_data(virq, pmc);
+
+	return 0;
+}
+
+static int pmc_irq_domain_xlate(struct irq_domain *d,
+				struct device_node *ctrlr,
+				const u32 *intspec, unsigned int intsize,
+				irq_hw_number_t *out_hwirq,
+				unsigned int *out_type)
+{
+	struct at91_pmc *pmc = d->host_data;
+	const struct at91_pmc_caps *caps = pmc->caps;
+
+	if (WARN_ON(intsize < 1))
+		return -EINVAL;
+
+	*out_hwirq = intspec[0];
+
+	if (!(caps->available_irqs & (1 << *out_hwirq)))
+		return -EINVAL;
+
+	*out_type = IRQ_TYPE_LEVEL_HIGH;
+
+	return 0;
+}
+
+static struct irq_domain_ops pmc_irq_ops = {
+	.map	= pmc_irq_map,
+	.xlate	= pmc_irq_domain_xlate,
+};
+
+static irqreturn_t pmc_irq_handler(int irq, void *data)
+{
+	struct at91_pmc *pmc = (struct at91_pmc *)data;
+	unsigned long sr;
+	int n;
+
+	sr = pmc_read(pmc, AT91_PMC_SR) & pmc_read(pmc, AT91_PMC_IMR);
+	if (!sr)
+		return IRQ_NONE;
+
+	for_each_set_bit(n, &sr, BITS_PER_LONG)
+		generic_handle_irq(irq_find_mapping(pmc->irqdomain, n));
+
+	return IRQ_HANDLED;
+}
+
+static const struct at91_pmc_caps at91rm9200_caps = {
+	.available_irqs = AT91_PMC_MOSCS | AT91_PMC_LOCKA | AT91_PMC_LOCKB |
+			  AT91_PMC_MCKRDY | AT91_PMC_PCK0RDY |
+			  AT91_PMC_PCK1RDY | AT91_PMC_PCK2RDY |
+			  AT91_PMC_PCK3RDY,
+};
+
+static const struct at91_pmc_caps at91sam9260_caps = {
+	.available_irqs = AT91_PMC_MOSCS | AT91_PMC_LOCKA | AT91_PMC_LOCKB |
+			  AT91_PMC_MCKRDY | AT91_PMC_PCK0RDY |
+			  AT91_PMC_PCK1RDY,
+};
+
+static const struct at91_pmc_caps at91sam9g45_caps = {
+	.available_irqs = AT91_PMC_MOSCS | AT91_PMC_LOCKA | AT91_PMC_MCKRDY |
+			  AT91_PMC_LOCKU | AT91_PMC_PCK0RDY |
+			  AT91_PMC_PCK1RDY,
+};
+
+static const struct at91_pmc_caps at91sam9n12_caps = {
+	.available_irqs = AT91_PMC_MOSCS | AT91_PMC_LOCKA | AT91_PMC_LOCKB |
+			  AT91_PMC_MCKRDY | AT91_PMC_PCK0RDY |
+			  AT91_PMC_PCK1RDY | AT91_PMC_MOSCSELS |
+			  AT91_PMC_MOSCRCS | AT91_PMC_CFDEV,
+};
+
+static const struct at91_pmc_caps at91sam9x5_caps = {
+	.available_irqs = AT91_PMC_MOSCS | AT91_PMC_LOCKA | AT91_PMC_MCKRDY |
+			  AT91_PMC_LOCKU | AT91_PMC_PCK0RDY |
+			  AT91_PMC_PCK1RDY | AT91_PMC_MOSCSELS |
+			  AT91_PMC_MOSCRCS | AT91_PMC_CFDEV,
+};
+
+static const struct at91_pmc_caps sama5d3_caps = {
+	.available_irqs = AT91_PMC_MOSCS | AT91_PMC_LOCKA | AT91_PMC_MCKRDY |
+			  AT91_PMC_LOCKU | AT91_PMC_PCK0RDY |
+			  AT91_PMC_PCK1RDY | AT91_PMC_PCK2RDY |
+			  AT91_PMC_MOSCSELS | AT91_PMC_MOSCRCS |
+			  AT91_PMC_CFDEV,
+};
+
+static struct at91_pmc *__init at91_pmc_init(struct device_node *np,
+					     void __iomem *regbase, int virq,
+					     const struct at91_pmc_caps *caps)
+{
+	struct at91_pmc *pmc;
+
+	if (!regbase || !virq ||  !caps)
+		return NULL;
+
+	at91_pmc_base = regbase;
+
+	pmc = kzalloc(sizeof(*pmc), GFP_KERNEL);
+	if (!pmc)
+		return NULL;
+
+	spin_lock_init(&pmc->lock);
+	pmc->regbase = regbase;
+	pmc->virq = virq;
+	pmc->caps = caps;
+
+	pmc->irqdomain = irq_domain_add_linear(np, 32, &pmc_irq_ops, pmc);
+
+	if (!pmc->irqdomain)
+		goto out_free_pmc;
+
+	pmc_write(pmc, AT91_PMC_IDR, 0xffffffff);
+	if (request_irq(pmc->virq, pmc_irq_handler, IRQF_SHARED, "pmc", pmc))
+		goto out_remove_irqdomain;
+
+	return pmc;
+
+out_remove_irqdomain:
+	irq_domain_remove(pmc->irqdomain);
+out_free_pmc:
+	kfree(pmc);
+
+	return NULL;
+}
+
+static const struct of_device_id pmc_clk_ids[] __initdata = {
+	/* Main clock */
+	{
+		.compatible = "atmel,at91rm9200-clk-main",
+		.data = of_at91rm9200_clk_main_setup,
+	},
+	/* PLL clocks */
+	{
+		.compatible = "atmel,at91rm9200-clk-pll",
+		.data = of_at91rm9200_clk_pll_setup,
+	},
+	{
+		.compatible = "atmel,at91sam9g45-clk-pll",
+		.data = of_at91sam9g45_clk_pll_setup,
+	},
+	{
+		.compatible = "atmel,at91sam9g20-clk-pllb",
+		.data = of_at91sam9g20_clk_pllb_setup,
+	},
+	{
+		.compatible = "atmel,sama5d3-clk-pll",
+		.data = of_sama5d3_clk_pll_setup,
+	},
+	{
+		.compatible = "atmel,at91sam9x5-clk-plldiv",
+		.data = of_at91sam9x5_clk_plldiv_setup,
+	},
+	/* Master clock */
+	{
+		.compatible = "atmel,at91rm9200-clk-master",
+		.data = of_at91rm9200_clk_master_setup,
+	},
+	{
+		.compatible = "atmel,at91sam9x5-clk-master",
+		.data = of_at91sam9x5_clk_master_setup,
+	},
+	/* System clocks */
+	{
+		.compatible = "atmel,at91rm9200-clk-system",
+		.data = of_at91rm9200_clk_sys_setup,
+	},
+	/* Peripheral clocks */
+	{
+		.compatible = "atmel,at91rm9200-clk-peripheral",
+		.data = of_at91rm9200_clk_periph_setup,
+	},
+	{
+		.compatible = "atmel,at91sam9x5-clk-peripheral",
+		.data = of_at91sam9x5_clk_periph_setup,
+	},
+	/* Programmable clocks */
+#if defined(CONFIG_AT91_PROGRAMMABLE_CLOCKS)
+	{
+		.compatible = "atmel,at91rm9200-clk-programmable",
+		.data = of_at91rm9200_clk_prog_setup,
+	},
+	{
+		.compatible = "atmel,at91sam9g45-clk-programmable",
+		.data = of_at91sam9g45_clk_prog_setup,
+	},
+	{
+		.compatible = "atmel,at91sam9x5-clk-programmable",
+		.data = of_at91sam9x5_clk_prog_setup,
+	},
+#endif
+	/* UTMI clock */
+#if defined(CONFIG_HAVE_AT91_UTMI)
+	{
+		.compatible = "atmel,at91sam9x5-clk-utmi",
+		.data = of_at91sam9x5_clk_utmi_setup,
+	},
+#endif
+	/* USB clock */
+#if defined(CONFIG_HAVE_AT91_USB_CLK)
+	{
+		.compatible = "atmel,at91rm9200-clk-usb",
+		.data = of_at91rm9200_clk_usb_setup,
+	},
+	{
+		.compatible = "atmel,at91sam9x5-clk-usb",
+		.data = of_at91sam9x5_clk_usb_setup,
+	},
+	{
+		.compatible = "atmel,at91sam9n12-clk-usb",
+		.data = of_at91sam9n12_clk_usb_setup,
+	},
+#endif
+	/* SMD clock */
+#if defined(CONFIG_HAVE_AT91_SMD)
+	{
+		.compatible = "atmel,at91sam9x5-clk-smd",
+		.data = of_at91sam9x5_clk_smd_setup,
+	},
+#endif
+	{ /*sentinel*/ }
+};
+
+static void __init of_at91_pmc_setup(struct device_node *np,
+				     const struct at91_pmc_caps *caps)
+{
+	struct at91_pmc *pmc;
+	struct device_node *childnp;
+	void (*clk_setup)(struct device_node *, struct at91_pmc *);
+	const struct of_device_id *clk_id;
+	void __iomem *regbase = of_iomap(np, 0);
+	int virq;
+
+	if (!regbase)
+		return;
+
+	virq = irq_of_parse_and_map(np, 0);
+	if (!virq)
+		return;
+
+	pmc = at91_pmc_init(np, regbase, virq, caps);
+	if (!pmc)
+		return;
+	for_each_child_of_node(np, childnp) {
+		clk_id = of_match_node(pmc_clk_ids, childnp);
+		if (!clk_id)
+			continue;
+		clk_setup = clk_id->data;
+		clk_setup(childnp, pmc);
+	}
+}
+
+static void __init of_at91rm9200_pmc_setup(struct device_node *np)
+{
+	of_at91_pmc_setup(np, &at91rm9200_caps);
+}
+CLK_OF_DECLARE(at91rm9200_clk_pmc, "atmel,at91rm9200-pmc",
+	       of_at91rm9200_pmc_setup);
+
+static void __init of_at91sam9260_pmc_setup(struct device_node *np)
+{
+	of_at91_pmc_setup(np, &at91sam9260_caps);
+}
+CLK_OF_DECLARE(at91sam9260_clk_pmc, "atmel,at91sam9260-pmc",
+	       of_at91sam9260_pmc_setup);
+
+static void __init of_at91sam9g45_pmc_setup(struct device_node *np)
+{
+	of_at91_pmc_setup(np, &at91sam9g45_caps);
+}
+CLK_OF_DECLARE(at91sam9g45_clk_pmc, "atmel,at91sam9g45-pmc",
+	       of_at91sam9g45_pmc_setup);
+
+static void __init of_at91sam9n12_pmc_setup(struct device_node *np)
+{
+	of_at91_pmc_setup(np, &at91sam9n12_caps);
+}
+CLK_OF_DECLARE(at91sam9n12_clk_pmc, "atmel,at91sam9n12-pmc",
+	       of_at91sam9n12_pmc_setup);
+
+static void __init of_at91sam9x5_pmc_setup(struct device_node *np)
+{
+	of_at91_pmc_setup(np, &at91sam9x5_caps);
+}
+CLK_OF_DECLARE(at91sam9x5_clk_pmc, "atmel,at91sam9x5-pmc",
+	       of_at91sam9x5_pmc_setup);
+
+static void __init of_sama5d3_pmc_setup(struct device_node *np)
+{
+	of_at91_pmc_setup(np, &sama5d3_caps);
+}
+CLK_OF_DECLARE(sama5d3_clk_pmc, "atmel,sama5d3-pmc",
+	       of_sama5d3_pmc_setup);

drivers/clk/at91/pmc.h

+/*
+ * drivers/clk/at91/pmc.h
+ *
+ *  Copyright (C) 2013 Boris BREZILLON <b.brezillon@overkiz.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ */
+
+#ifndef __PMC_H_
+#define __PMC_H_
+
+#include <linux/io.h>
+#include <linux/irqdomain.h>
+#include <linux/spinlock.h>
+
+struct clk_range {
+	unsigned long min;
+	unsigned long max;
+};
+
+#define CLK_RANGE(MIN, MAX) {.min = MIN, .max = MAX,}
+
+struct at91_pmc_caps {
+	u32 available_irqs;
+};
+
+struct at91_pmc {
+	void __iomem *regbase;
+	int virq;
+	spinlock_t lock;
+	const struct at91_pmc_caps *caps;
+	struct irq_domain *irqdomain;
+};
+
+static inline void pmc_lock(struct at91_pmc *pmc)
+{
+	spin_lock(&pmc->lock);
+}
+
+static inline void pmc_unlock(struct at91_pmc *pmc)
+{
+	spin_unlock(&pmc->lock);
+}
+
+static inline u32 pmc_read(struct at91_pmc *pmc, int offset)
+{
+	return readl(pmc->regbase + offset);
+}
+
+static inline void pmc_write(struct at91_pmc *pmc, int offset, u32 value)
+{
+	writel(value, pmc->regbase + offset);
+}
+
+int of_at91_get_clk_range(struct device_node *np, const char *propname,
+			  struct clk_range *range);
+
+extern void __init of_at91rm9200_clk_main_setup(struct device_node *np,
+						struct at91_pmc *pmc);
+
+extern void __init of_at91rm9200_clk_pll_setup(struct device_node *np,
+					       struct at91_pmc *pmc);
+extern void __init of_at91sam9g45_clk_pll_setup(struct device_node *np,
+						struct at91_pmc *pmc);
+extern void __init of_at91sam9g20_clk_pllb_setup(struct device_node *np,
+						 struct at91_pmc *pmc);
+extern void __init of_sama5d3_clk_pll_setup(struct device_node *np,
+					    struct at91_pmc *pmc);
+extern void __init of_at91sam9x5_clk_plldiv_setup(struct device_node *np,
+						  struct at91_pmc *pmc);
+
+extern void __init of_at91rm9200_clk_master_setup(struct device_node *np,
+						  struct at91_pmc *pmc);
+extern void __init of_at91sam9x5_clk_master_setup(struct device_node *np,
+						  struct at91_pmc *pmc);
+
+extern void __init of_at91rm9200_clk_sys_setup(struct device_node *np,
+					       struct at91_pmc *pmc);
+
+extern void __init of_at91rm9200_clk_periph_setup(struct device_node *np,
+						  struct at91_pmc *pmc);
+extern void __init of_at91sam9x5_clk_periph_setup(struct device_node *np,
+						  struct at91_pmc *pmc);
+
+#if defined(CONFIG_AT91_PROGRAMMABLE_CLOCKS)
+extern void __init of_at91rm9200_clk_prog_setup(struct device_node *np,
+						struct at91_pmc *pmc);
+extern void __init of_at91sam9g45_clk_prog_setup(struct device_node *np,
+						 struct at91_pmc *pmc);
+extern void __init of_at91sam9x5_clk_prog_setup(struct device_node *np,
+						struct at91_pmc *pmc);
+#endif
+
+#if defined(CONFIG_HAVE_AT91_UTMI)
+extern void __init of_at91sam9x5_clk_utmi_setup(struct device_node *np,
+						struct at91_pmc *pmc);
+#endif
+
+#if defined(CONFIG_HAVE_AT91_USB_CLK)
+extern void __init of_at91rm9200_clk_usb_setup(struct device_node *np,
+					       struct at91_pmc *pmc);
+extern void __init of_at91sam9x5_clk_usb_setup(struct device_node *np,
+					       struct at91_pmc *pmc);
+extern void __init of_at91sam9n12_clk_usb_setup(struct device_node *np,
+						struct at91_pmc *pmc);
+#endif
+
+#if defined(CONFIG_HAVE_AT91_SMD)
+extern void __init of_at91sam9x5_clk_smd_setup(struct device_node *np,
+					       struct at91_pmc *pmc);
+#endif
+
+#endif /* __PMC_H_ */

drivers/usb/gadget/atmel_usba_udc.c

@@ -326,7 +326,7 @@ static int vbus_is_present(struct usba_udc *udc)
 
 #if defined(CONFIG_ARCH_AT91SAM9RL)
 
-#include <mach/at91_pmc.h>
+#include <linux/clk/at91_pmc.h>
 
 static void toggle_bias(int is_on)
 {

include/dt-bindings/clk/at91.h

+/*
+ * This header provides constants for AT91 pmc status.
+ *
+ * The constants defined in this header are being used in dts.
+ *
+ * Licensed under GPLv2 or later.
+ */
+
+#ifndef _DT_BINDINGS_CLK_AT91_H
+#define _DT_BINDINGS_CLK_AT91_H
+
+#define AT91_PMC_MOSCS		0		/* MOSCS Flag */
+#define AT91_PMC_LOCKA		1		/* PLLA Lock */
+#define AT91_PMC_LOCKB		2		/* PLLB Lock */
+#define AT91_PMC_MCKRDY		3		/* Master Clock */
+#define AT91_PMC_LOCKU		6		/* UPLL Lock */
+#define AT91_PMC_PCKRDY(id)	(8 + (id))	/* Programmable Clock */
+#define AT91_PMC_MOSCSELS	16		/* Main Oscillator Selection */
+#define AT91_PMC_MOSCRCS	17		/* Main On-Chip RC */
+#define AT91_PMC_CFDEV		18		/* Clock Failure Detector Event */
+
+#endif

arch/arm/mach-at91/include/mach/at91_pmc.h → include/linux/clk/at91_pmc.h

 /*
- * arch/arm/mach-at91/include/mach/at91_pmc.h
+ * include/linux/clk/at91_pmc.h
  *
  * Copyright (C) 2005 Ivan Kokshaysky
  * Copyright (C) SAN People
@@ -164,6 +164,8 @@ extern void __iomem *at91_pmc_base;
 #define		AT91_PMC_CFDEV		(1 << 18)		/* Clock Failure Detector Event [some SAM9] */
 #define	AT91_PMC_IMR		0x6c			/* Interrupt Mask Register */
 
+#define AT91_PMC_PLLICPR	0x80			/* PLL Charge Pump Current Register */
+
 #define AT91_PMC_PROT		0xe4			/* Write Protect Mode Register [some SAM9] */
 #define		AT91_PMC_WPEN		(0x1  <<  0)		/* Write Protect Enable */
 #define		AT91_PMC_WPKEY		(0xffffff << 8)		/* Write Protect Key */