Merge tag 'seb_clk-3.11' of git://git.infradead.org/users/jcooper/linux into next/soc

From Jason Cooper:
mvebu clock restructuring for v3.11

 - clk: mvebu
    - reorganize by SoC to remove built up #ifdefs
    - add clk flags per clock gate

* tag 'seb_clk-3.11' of git://git.infradead.org/users/jcooper/linux:
  clk: mvebu: disintegrate obsolete file
  ARM: mvebu: move DT boards to SoC-centric clock init
  ARM: kirkwood: move DT boards to SoC-centric clock init
  ARM: dove: move DT boards to SoC-centric clock init
  clk: mvebu: add Armada XP SoC-centric clock init
  clk: mvebu: add Armada 370 SoC-centric clock init
  clk: mvebu: add Kirkwood SoC-centric clock init
  clk: mvebu: add Dove SoC-centric clock init
  clk: mvebu: add common clock functions for core clk and clk gating
  clk: mvebu: introduce per-clock-gate flags

arch/arm/mach-dove/Kconfig

@@ -22,8 +22,7 @@ config MACH_CM_A510
 
 config MACH_DOVE_DT
 	bool "Marvell Dove Flattened Device Tree"
-	select MVEBU_CLK_CORE
-	select MVEBU_CLK_GATING
+	select DOVE_CLK
 	select REGULATOR
 	select REGULATOR_FIXED_VOLTAGE
 	select USE_OF

arch/arm/mach-dove/board-dt.c

@@ -10,7 +10,6 @@
 
 #include <linux/init.h>
 #include <linux/clk-provider.h>
-#include <linux/clk/mvebu.h>
 #include <linux/of.h>
 #include <linux/of_platform.h>
 #include <linux/platform_data/usb-ehci-orion.h>
@@ -49,7 +48,7 @@ static void __init dove_legacy_clk_init(void)
 
 static void __init dove_of_clk_init(void)
 {
-	mvebu_clocks_init();
+	of_clk_init(NULL);
 	dove_legacy_clk_init();
 }
 

arch/arm/mach-dove/common.c

@@ -9,7 +9,6 @@
  */
 
 #include <linux/clk-provider.h>
-#include <linux/clk/mvebu.h>
 #include <linux/dma-mapping.h>
 #include <linux/init.h>
 #include <linux/of.h>

arch/arm/mach-kirkwood/Kconfig

@@ -128,13 +128,12 @@ comment "Device tree entries"
 
 config ARCH_KIRKWOOD_DT
 	bool "Marvell Kirkwood Flattened Device Tree"
+	select KIRKWOOD_CLK
 	select POWER_SUPPLY
 	select POWER_RESET
 	select POWER_RESET_GPIO
 	select REGULATOR
 	select REGULATOR_FIXED_VOLTAGE
-	select MVEBU_CLK_CORE
-	select MVEBU_CLK_GATING
 	select USE_OF
 	help
 	  Say 'Y' here if you want your kernel to support the

arch/arm/mach-kirkwood/board-dt.c

@@ -15,7 +15,6 @@
 #include <linux/of.h>
 #include <linux/of_platform.h>
 #include <linux/clk-provider.h>
-#include <linux/clk/mvebu.h>
 #include <linux/kexec.h>
 #include <asm/mach/arch.h>
 #include <asm/mach/map.h>
@@ -72,7 +71,7 @@ static void __init kirkwood_legacy_clk_init(void)
 
 static void __init kirkwood_of_clk_init(void)
 {
-	mvebu_clocks_init();
+	of_clk_init(NULL);
 	kirkwood_legacy_clk_init();
 }
 

arch/arm/mach-mvebu/Kconfig

@@ -10,9 +10,6 @@ config ARCH_MVEBU
 	select PLAT_ORION
 	select SPARSE_IRQ
 	select CLKDEV_LOOKUP
-	select MVEBU_CLK_CORE
-	select MVEBU_CLK_CPU
-	select MVEBU_CLK_GATING
 	select MVEBU_MBUS
 	select ZONE_DMA if ARM_LPAE
 	select ARCH_REQUIRE_GPIOLIB
@@ -32,6 +29,7 @@ config MACH_ARMADA_370_XP
 
 config MACH_ARMADA_370
 	bool "Marvell Armada 370 boards"
+	select ARMADA_370_CLK
 	select MACH_ARMADA_370_XP
 	select PINCTRL_ARMADA_370
 	help
@@ -40,6 +38,7 @@ config MACH_ARMADA_370
 
 config MACH_ARMADA_XP
 	bool "Marvell Armada XP boards"
+	select ARMADA_XP_CLK
 	select MACH_ARMADA_370_XP
 	select PINCTRL_ARMADA_XP
 	help

arch/arm/mach-mvebu/armada-370-xp.c

@@ -14,10 +14,10 @@
 
 #include <linux/kernel.h>
 #include <linux/init.h>
+#include <linux/clk-provider.h>
 #include <linux/of_platform.h>
 #include <linux/io.h>
 #include <linux/time-armada-370-xp.h>
-#include <linux/clk/mvebu.h>
 #include <linux/dma-mapping.h>
 #include <linux/mbus.h>
 #include <linux/irqchip.h>
@@ -45,7 +45,7 @@ void __init armada_370_xp_map_io(void)
 
 void __init armada_370_xp_timer_and_clk_init(void)
 {
-	mvebu_clocks_init();
+	of_clk_init(NULL);
 	armada_370_xp_timer_init();
 }
 

drivers/clk/mvebu/Kconfig

-config MVEBU_CLK_CORE
+config MVEBU_CLK_COMMON
 	bool
 
 config MVEBU_CLK_CPU
 	bool
 
-config MVEBU_CLK_GATING
+config ARMADA_370_CLK
 	bool
+	select MVEBU_CLK_COMMON
+	select MVEBU_CLK_CPU
+
+config ARMADA_XP_CLK
+	bool
+	select MVEBU_CLK_COMMON
+	select MVEBU_CLK_CPU
+
+config DOVE_CLK
+	bool
+	select MVEBU_CLK_COMMON
+
+config KIRKWOOD_CLK
+	bool
+	select MVEBU_CLK_COMMON

drivers/clk/mvebu/Makefile

-obj-$(CONFIG_MVEBU_CLK_CORE) 	+= clk.o clk-core.o
+obj-$(CONFIG_MVEBU_CLK_COMMON)	+= common.o
 obj-$(CONFIG_MVEBU_CLK_CPU) 	+= clk-cpu.o
-obj-$(CONFIG_MVEBU_CLK_GATING) 	+= clk-gating-ctrl.o
+
+obj-$(CONFIG_ARMADA_370_CLK)	+= armada-370.o
+obj-$(CONFIG_ARMADA_XP_CLK)	+= armada-xp.o
+obj-$(CONFIG_DOVE_CLK)		+= dove.o
+obj-$(CONFIG_KIRKWOOD_CLK)	+= kirkwood.o

drivers/clk/mvebu/armada-370.c

+/*
+ * Marvell Armada 370 SoC clocks
+ *
+ * Copyright (C) 2012 Marvell
+ *
+ * Gregory CLEMENT <gregory.clement@free-electrons.com>
+ * Sebastian Hesselbarth <sebastian.hesselbarth@gmail.com>
+ * Andrew Lunn <andrew@lunn.ch>
+ *
+ * This file is licensed under the terms of the GNU General Public
+ * License version 2.  This program is licensed "as is" without any
+ * warranty of any kind, whether express or implied.
+ */
+
+#include <linux/kernel.h>
+#include <linux/clk-provider.h>
+#include <linux/io.h>
+#include <linux/of.h>
+#include "common.h"
+
+/*
+ * Core Clocks
+ */
+
+#define SARL				0	/* Low part [0:31] */
+#define	 SARL_A370_PCLK_FREQ_OPT	11
+#define	 SARL_A370_PCLK_FREQ_OPT_MASK	0xF
+#define	 SARL_A370_FAB_FREQ_OPT		15
+#define	 SARL_A370_FAB_FREQ_OPT_MASK	0x1F
+#define	 SARL_A370_TCLK_FREQ_OPT	20
+#define	 SARL_A370_TCLK_FREQ_OPT_MASK	0x1
+
+enum { A370_CPU_TO_NBCLK, A370_CPU_TO_HCLK, A370_CPU_TO_DRAMCLK };
+
+static const struct coreclk_ratio __initconst a370_coreclk_ratios[] = {
+	{ .id = A370_CPU_TO_NBCLK, .name = "nbclk" },
+	{ .id = A370_CPU_TO_HCLK, .name = "hclk" },
+	{ .id = A370_CPU_TO_DRAMCLK, .name = "dramclk" },
+};
+
+static const u32 __initconst a370_tclk_freqs[] = {
+	16600000,
+	20000000,
+};
+
+static u32 __init a370_get_tclk_freq(void __iomem *sar)
+{
+	u8 tclk_freq_select = 0;
+
+	tclk_freq_select = ((readl(sar) >> SARL_A370_TCLK_FREQ_OPT) &
+			    SARL_A370_TCLK_FREQ_OPT_MASK);
+	return a370_tclk_freqs[tclk_freq_select];
+}
+
+static const u32 __initconst a370_cpu_freqs[] = {
+	400000000,
+	533000000,
+	667000000,
+	800000000,
+	1000000000,
+	1067000000,
+	1200000000,
+};
+
+static u32 __init a370_get_cpu_freq(void __iomem *sar)
+{
+	u32 cpu_freq;
+	u8 cpu_freq_select = 0;
+
+	cpu_freq_select = ((readl(sar) >> SARL_A370_PCLK_FREQ_OPT) &
+			   SARL_A370_PCLK_FREQ_OPT_MASK);
+	if (cpu_freq_select >= ARRAY_SIZE(a370_cpu_freqs)) {
+		pr_err("CPU freq select unsupported %d\n", cpu_freq_select);
+		cpu_freq = 0;
+	} else
+		cpu_freq = a370_cpu_freqs[cpu_freq_select];
+
+	return cpu_freq;
+}
+
+static const int __initconst a370_nbclk_ratios[32][2] = {
+	{0, 1}, {1, 2}, {2, 2}, {2, 2},
+	{1, 2}, {1, 2}, {1, 1}, {2, 3},
+	{0, 1}, {1, 2}, {2, 4}, {0, 1},
+	{1, 2}, {0, 1}, {0, 1}, {2, 2},
+	{0, 1}, {0, 1}, {0, 1}, {1, 1},
+	{2, 3}, {0, 1}, {0, 1}, {0, 1},
+	{0, 1}, {0, 1}, {0, 1}, {1, 1},
+	{0, 1}, {0, 1}, {0, 1}, {0, 1},
+};
+
+static const int __initconst a370_hclk_ratios[32][2] = {
+	{0, 1}, {1, 2}, {2, 6}, {2, 3},
+	{1, 3}, {1, 4}, {1, 2}, {2, 6},
+	{0, 1}, {1, 6}, {2, 10}, {0, 1},
+	{1, 4}, {0, 1}, {0, 1}, {2, 5},
+	{0, 1}, {0, 1}, {0, 1}, {1, 2},
+	{2, 6}, {0, 1}, {0, 1}, {0, 1},
+	{0, 1}, {0, 1}, {0, 1}, {1, 1},
+	{0, 1}, {0, 1}, {0, 1}, {0, 1},
+};
+
+static const int __initconst a370_dramclk_ratios[32][2] = {
+	{0, 1}, {1, 2}, {2, 3}, {2, 3},
+	{1, 3}, {1, 2}, {1, 2}, {2, 6},
+	{0, 1}, {1, 3}, {2, 5}, {0, 1},
+	{1, 4}, {0, 1}, {0, 1}, {2, 5},
+	{0, 1}, {0, 1}, {0, 1}, {1, 1},
+	{2, 3}, {0, 1}, {0, 1}, {0, 1},
+	{0, 1}, {0, 1}, {0, 1}, {1, 1},
+	{0, 1}, {0, 1}, {0, 1}, {0, 1},
+};
+
+static void __init a370_get_clk_ratio(
+	void __iomem *sar, int id, int *mult, int *div)
+{
+	u32 opt = ((readl(sar) >> SARL_A370_FAB_FREQ_OPT) &
+		SARL_A370_FAB_FREQ_OPT_MASK);
+
+	switch (id) {
+	case A370_CPU_TO_NBCLK:
+		*mult = a370_nbclk_ratios[opt][0];
+		*div = a370_nbclk_ratios[opt][1];
+		break;
+	case A370_CPU_TO_HCLK:
+		*mult = a370_hclk_ratios[opt][0];
+		*div = a370_hclk_ratios[opt][1];
+		break;
+	case A370_CPU_TO_DRAMCLK:
+		*mult = a370_dramclk_ratios[opt][0];
+		*div = a370_dramclk_ratios[opt][1];
+		break;
+	}
+}
+
+static const struct coreclk_soc_desc a370_coreclks = {
+	.get_tclk_freq = a370_get_tclk_freq,
+	.get_cpu_freq = a370_get_cpu_freq,
+	.get_clk_ratio = a370_get_clk_ratio,
+	.ratios = a370_coreclk_ratios,
+	.num_ratios = ARRAY_SIZE(a370_coreclk_ratios),
+};
+
+static void __init a370_coreclk_init(struct device_node *np)
+{
+	mvebu_coreclk_setup(np, &a370_coreclks);
+}
+CLK_OF_DECLARE(a370_core_clk, "marvell,armada-370-core-clock",
+	       a370_coreclk_init);
+
+/*
+ * Clock Gating Control
+ */
+
+static const struct clk_gating_soc_desc __initconst a370_gating_desc[] = {
+	{ "audio", NULL, 0, 0 },
+	{ "pex0_en", NULL, 1, 0 },
+	{ "pex1_en", NULL,  2, 0 },
+	{ "ge1", NULL, 3, 0 },
+	{ "ge0", NULL, 4, 0 },
+	{ "pex0", "pex0_en", 5, 0 },
+	{ "pex1", "pex1_en", 9, 0 },
+	{ "sata0", NULL, 15, 0 },
+	{ "sdio", NULL, 17, 0 },
+	{ "tdm", NULL, 25, 0 },
+	{ "ddr", NULL, 28, CLK_IGNORE_UNUSED },
+	{ "sata1", NULL, 30, 0 },
+	{ }
+};
+
+static void __init a370_clk_gating_init(struct device_node *np)
+{
+	mvebu_clk_gating_setup(np, a370_gating_desc);
+}
+CLK_OF_DECLARE(a370_clk_gating, "marvell,armada-370-gating-clock",
+	       a370_clk_gating_init);

drivers/clk/mvebu/armada-xp.c

+/*
+ * Marvell Armada XP SoC clocks
+ *
+ * Copyright (C) 2012 Marvell
+ *
+ * Gregory CLEMENT <gregory.clement@free-electrons.com>
+ * Sebastian Hesselbarth <sebastian.hesselbarth@gmail.com>
+ * Andrew Lunn <andrew@lunn.ch>
+ *
+ * This file is licensed under the terms of the GNU General Public
+ * License version 2.  This program is licensed "as is" without any
+ * warranty of any kind, whether express or implied.
+ */
+
+#include <linux/kernel.h>
+#include <linux/clk-provider.h>
+#include <linux/io.h>
+#include <linux/of.h>
+#include "common.h"
+
+/*
+ * Core Clocks
+ *
+ * Armada XP Sample At Reset is a 64 bit bitfiled split in two
+ * register of 32 bits
+ */
+
+#define SARL				0	/* Low part [0:31] */
+#define	 SARL_AXP_PCLK_FREQ_OPT		21
+#define	 SARL_AXP_PCLK_FREQ_OPT_MASK	0x7
+#define	 SARL_AXP_FAB_FREQ_OPT		24
+#define	 SARL_AXP_FAB_FREQ_OPT_MASK	0xF
+#define SARH				4	/* High part [32:63] */
+#define	 SARH_AXP_PCLK_FREQ_OPT		(52-32)
+#define	 SARH_AXP_PCLK_FREQ_OPT_MASK	0x1
+#define	 SARH_AXP_PCLK_FREQ_OPT_SHIFT	3
+#define	 SARH_AXP_FAB_FREQ_OPT		(51-32)
+#define	 SARH_AXP_FAB_FREQ_OPT_MASK	0x1
+#define	 SARH_AXP_FAB_FREQ_OPT_SHIFT	4
+
+enum { AXP_CPU_TO_NBCLK, AXP_CPU_TO_HCLK, AXP_CPU_TO_DRAMCLK };
+
+static const struct coreclk_ratio __initconst axp_coreclk_ratios[] = {
+	{ .id = AXP_CPU_TO_NBCLK, .name = "nbclk" },
+	{ .id = AXP_CPU_TO_HCLK, .name = "hclk" },
+	{ .id = AXP_CPU_TO_DRAMCLK, .name = "dramclk" },
+};
+
+/* Armada XP TCLK frequency is fixed to 250MHz */
+static u32 __init axp_get_tclk_freq(void __iomem *sar)
+{
+	return 250000000;
+}
+
+static const u32 __initconst axp_cpu_freqs[] = {
+	1000000000,
+	1066000000,
+	1200000000,
+	1333000000,
+	1500000000,
+	1666000000,
+	1800000000,
+	2000000000,
+	667000000,
+	0,
+	800000000,
+	1600000000,
+};
+
+static u32 __init axp_get_cpu_freq(void __iomem *sar)
+{
+	u32 cpu_freq;
+	u8 cpu_freq_select = 0;
+
+	cpu_freq_select = ((readl(sar + SARL) >> SARL_AXP_PCLK_FREQ_OPT) &
+			   SARL_AXP_PCLK_FREQ_OPT_MASK);
+	/*
+	 * The upper bit is not contiguous to the other ones and
+	 * located in the high part of the SAR registers
+	 */
+	cpu_freq_select |= (((readl(sar + SARH) >> SARH_AXP_PCLK_FREQ_OPT) &
+	     SARH_AXP_PCLK_FREQ_OPT_MASK) << SARH_AXP_PCLK_FREQ_OPT_SHIFT);
+	if (cpu_freq_select >= ARRAY_SIZE(axp_cpu_freqs)) {
+		pr_err("CPU freq select unsupported: %d\n", cpu_freq_select);
+		cpu_freq = 0;
+	} else
+		cpu_freq = axp_cpu_freqs[cpu_freq_select];
+
+	return cpu_freq;
+}
+
+static const int __initconst axp_nbclk_ratios[32][2] = {
+	{0, 1}, {1, 2}, {2, 2}, {2, 2},
+	{1, 2}, {1, 2}, {1, 1}, {2, 3},
+	{0, 1}, {1, 2}, {2, 4}, {0, 1},
+	{1, 2}, {0, 1}, {0, 1}, {2, 2},
+	{0, 1}, {0, 1}, {0, 1}, {1, 1},
+	{2, 3}, {0, 1}, {0, 1}, {0, 1},
+	{0, 1}, {0, 1}, {0, 1}, {1, 1},
+	{0, 1}, {0, 1}, {0, 1}, {0, 1},
+};
+
+static const int __initconst axp_hclk_ratios[32][2] = {
+	{0, 1}, {1, 2}, {2, 6}, {2, 3},
+	{1, 3}, {1, 4}, {1, 2}, {2, 6},
+	{0, 1}, {1, 6}, {2, 10}, {0, 1},
+	{1, 4}, {0, 1}, {0, 1}, {2, 5},
+	{0, 1}, {0, 1}, {0, 1}, {1, 2},
+	{2, 6}, {0, 1}, {0, 1}, {0, 1},
+	{0, 1}, {0, 1}, {0, 1}, {1, 1},
+	{0, 1}, {0, 1}, {0, 1}, {0, 1},
+};
+
+static const int __initconst axp_dramclk_ratios[32][2] = {
+	{0, 1}, {1, 2}, {2, 3}, {2, 3},
+	{1, 3}, {1, 2}, {1, 2}, {2, 6},
+	{0, 1}, {1, 3}, {2, 5}, {0, 1},
+	{1, 4}, {0, 1}, {0, 1}, {2, 5},
+	{0, 1}, {0, 1}, {0, 1}, {1, 1},
+	{2, 3}, {0, 1}, {0, 1}, {0, 1},
+	{0, 1}, {0, 1}, {0, 1}, {1, 1},
+	{0, 1}, {0, 1}, {0, 1}, {0, 1},
+};
+
+static void __init axp_get_clk_ratio(
+	void __iomem *sar, int id, int *mult, int *div)
+{
+	u32 opt = ((readl(sar + SARL) >> SARL_AXP_FAB_FREQ_OPT) &
+	      SARL_AXP_FAB_FREQ_OPT_MASK);
+	/*
+	 * The upper bit is not contiguous to the other ones and
+	 * located in the high part of the SAR registers
+	 */
+	opt |= (((readl(sar + SARH) >> SARH_AXP_FAB_FREQ_OPT) &
+		 SARH_AXP_FAB_FREQ_OPT_MASK) << SARH_AXP_FAB_FREQ_OPT_SHIFT);
+
+	switch (id) {
+	case AXP_CPU_TO_NBCLK:
+		*mult = axp_nbclk_ratios[opt][0];
+		*div = axp_nbclk_ratios[opt][1];
+		break;
+	case AXP_CPU_TO_HCLK:
+		*mult = axp_hclk_ratios[opt][0];
+		*div = axp_hclk_ratios[opt][1];
+		break;
+	case AXP_CPU_TO_DRAMCLK:
+		*mult = axp_dramclk_ratios[opt][0];
+		*div = axp_dramclk_ratios[opt][1];
+		break;
+	}
+}
+
+static const struct coreclk_soc_desc axp_coreclks = {
+	.get_tclk_freq = axp_get_tclk_freq,
+	.get_cpu_freq = axp_get_cpu_freq,
+	.get_clk_ratio = axp_get_clk_ratio,
+	.ratios = axp_coreclk_ratios,
+	.num_ratios = ARRAY_SIZE(axp_coreclk_ratios),
+};
+
+static void __init axp_coreclk_init(struct device_node *np)
+{
+	mvebu_coreclk_setup(np, &axp_coreclks);
+}
+CLK_OF_DECLARE(axp_core_clk, "marvell,armada-xp-core-clock",
+	       axp_coreclk_init);
+
+/*
+ * Clock Gating Control
+ */
+
+static const struct clk_gating_soc_desc __initconst axp_gating_desc[] = {
+	{ "audio", NULL, 0, 0 },
+	{ "ge3", NULL, 1, 0 },
+	{ "ge2", NULL,  2, 0 },
+	{ "ge1", NULL, 3, 0 },
+	{ "ge0", NULL, 4, 0 },
+	{ "pex00", NULL, 5, 0 },
+	{ "pex01", NULL, 6, 0 },
+	{ "pex02", NULL, 7, 0 },
+	{ "pex03", NULL, 8, 0 },
+	{ "pex10", NULL, 9, 0 },
+	{ "pex11", NULL, 10, 0 },
+	{ "pex12", NULL, 11, 0 },
+	{ "pex13", NULL, 12, 0 },
+	{ "bp", NULL, 13, 0 },
+	{ "sata0lnk", NULL, 14, 0 },
+	{ "sata0", "sata0lnk", 15, 0 },
+	{ "lcd", NULL, 16, 0 },
+	{ "sdio", NULL, 17, 0 },
+	{ "usb0", NULL, 18, 0 },
+	{ "usb1", NULL, 19, 0 },
+	{ "usb2", NULL, 20, 0 },
+	{ "xor0", NULL, 22, 0 },
+	{ "crypto", NULL, 23, 0 },
+	{ "tdm", NULL, 25, 0 },
+	{ "pex20", NULL, 26, 0 },
+	{ "pex30", NULL, 27, 0 },
+	{ "xor1", NULL, 28, 0 },
+	{ "sata1lnk", NULL, 29, 0 },
+	{ "sata1", "sata1lnk", 30, 0 },
+	{ }
+};
+
+static void __init axp_clk_gating_init(struct device_node *np)
+{
+	mvebu_clk_gating_setup(np, axp_gating_desc);
+}
+CLK_OF_DECLARE(axp_clk_gating, "marvell,armada-xp-gating-clock",
+	       axp_clk_gating_init);

drivers/clk/mvebu/clk-core.h

-/*
- *  * Marvell EBU clock core handling defined at reset
- *
- * Copyright (C) 2012 Marvell
- *
- * Gregory CLEMENT <gregory.clement@free-electrons.com>
- *
- * This file is licensed under the terms of the GNU General Public
- * License version 2.  This program is licensed "as is" without any
- * warranty of any kind, whether express or implied.
- */
-
-#ifndef __MVEBU_CLK_CORE_H
-#define __MVEBU_CLK_CORE_H
-
-void __init mvebu_core_clk_init(void);
-
-#endif

drivers/clk/mvebu/clk-gating-ctrl.c

-/*
- * Marvell MVEBU clock gating control.
- *
- * Sebastian Hesselbarth <sebastian.hesselbarth@gmail.com>
- * Andrew Lunn <andrew@lunn.ch>
- *
- * This file is licensed under the terms of the GNU General Public
- * License version 2. This program is licensed "as is" without any
- * warranty of any kind, whether express or implied.
- */
-#include <linux/kernel.h>
-#include <linux/bitops.h>
-#include <linux/io.h>
-#include <linux/clk.h>
-#include <linux/clkdev.h>
-#include <linux/clk-provider.h>
-#include <linux/clk/mvebu.h>
-#include <linux/of.h>
-#include <linux/of_address.h>
-
-struct mvebu_gating_ctrl {
-	spinlock_t lock;
-	struct clk **gates;
-	int num_gates;
-};
-
-struct mvebu_soc_descr {
-	const char *name;
-	const char *parent;
-	int bit_idx;
-};
-
-#define to_clk_gate(_hw) container_of(_hw, struct clk_gate, hw)
-
-static struct clk *mvebu_clk_gating_get_src(
-	struct of_phandle_args *clkspec, void *data)
-{
-	struct mvebu_gating_ctrl *ctrl = (struct mvebu_gating_ctrl *)data;
-	int n;
-
-	if (clkspec->args_count < 1)
-		return ERR_PTR(-EINVAL);
-
-	for (n = 0; n < ctrl->num_gates; n++) {
-		struct clk_gate *gate =
-			to_clk_gate(__clk_get_hw(ctrl->gates[n]));
-		if (clkspec->args[0] == gate->bit_idx)
-			return ctrl->gates[n];
-	}
-	return ERR_PTR(-ENODEV);
-}
-
-static void __init mvebu_clk_gating_setup(
-	struct device_node *np, const struct mvebu_soc_descr *descr)
-{
-	struct mvebu_gating_ctrl *ctrl;
-	struct clk *clk;
-	void __iomem *base;
-	const char *default_parent = NULL;
-	int n;
-
-	base = of_iomap(np, 0);
-
-	clk = of_clk_get(np, 0);
-	if (!IS_ERR(clk)) {
-		default_parent = __clk_get_name(clk);
-		clk_put(clk);
-	}
-
-	ctrl = kzalloc(sizeof(struct mvebu_gating_ctrl), GFP_KERNEL);
-	if (WARN_ON(!ctrl))
-		return;
-
-	spin_lock_init(&ctrl->lock);
-
-	/*
-	 * Count, allocate, and register clock gates
-	 */
-	for (n = 0; descr[n].name;)
-		n++;
-
-	ctrl->num_gates = n;
-	ctrl->gates = kzalloc(ctrl->num_gates * sizeof(struct clk *),
-			      GFP_KERNEL);
-	if (WARN_ON(!ctrl->gates)) {
-		kfree(ctrl);
-		return;
-	}
-
-	for (n = 0; n < ctrl->num_gates; n++) {
-		u8 flags = 0;
-		const char *parent =
-			(descr[n].parent) ? descr[n].parent : default_parent;
-
-		/*
-		 * On Armada 370, the DDR clock is a special case: it
-		 * isn't taken by any driver, but should anyway be
-		 * kept enabled, so we mark it as IGNORE_UNUSED for
-		 * now.
-		 */
-		if (!strcmp(descr[n].name, "ddr"))
-			flags |= CLK_IGNORE_UNUSED;
-
-		ctrl->gates[n] = clk_register_gate(NULL, descr[n].name, parent,
-				   flags, base, descr[n].bit_idx, 0, &ctrl->lock);
-		WARN_ON(IS_ERR(ctrl->gates[n]));
-	}
-	of_clk_add_provider(np, mvebu_clk_gating_get_src, ctrl);
-}
-
-/*
- * SoC specific clock gating control
- */
-
-#ifdef CONFIG_MACH_ARMADA_370
-static const struct mvebu_soc_descr __initconst armada_370_gating_descr[] = {
-	{ "audio", NULL, 0 },
-	{ "pex0_en", NULL, 1 },
-	{ "pex1_en", NULL,  2 },
-	{ "ge1", NULL, 3 },
-	{ "ge0", NULL, 4 },
-	{ "pex0", "pex0_en", 5 },
-	{ "pex1", "pex1_en", 9 },
-	{ "sata0", NULL, 15 },
-	{ "sdio", NULL, 17 },
-	{ "tdm", NULL, 25 },
-	{ "ddr", NULL, 28 },
-	{ "sata1", NULL, 30 },
-	{ }
-};
-#endif
-
-#ifdef CONFIG_MACH_ARMADA_XP
-static const struct mvebu_soc_descr __initconst armada_xp_gating_descr[] = {
-	{ "audio", NULL, 0 },
-	{ "ge3", NULL, 1 },
-	{ "ge2", NULL,  2 },
-	{ "ge1", NULL, 3 },
-	{ "ge0", NULL, 4 },
-	{ "pex00", NULL, 5 },
-	{ "pex01", NULL, 6 },
-	{ "pex02", NULL, 7 },
-	{ "pex03", NULL, 8 },
-	{ "pex10", NULL, 9 },
-	{ "pex11", NULL, 10 },
-	{ "pex12", NULL, 11 },
-	{ "pex13", NULL, 12 },
-	{ "bp", NULL, 13 },
-	{ "sata0lnk", NULL, 14 },
-	{ "sata0", "sata0lnk", 15 },
-	{ "lcd", NULL, 16 },
-	{ "sdio", NULL, 17 },
-	{ "usb0", NULL, 18 },
-	{ "usb1", NULL, 19 },
-	{ "usb2", NULL, 20 },
-	{ "xor0", NULL, 22 },
-	{ "crypto", NULL, 23 },
-	{ "tdm", NULL, 25 },
-	{ "pex20", NULL, 26 },
-	{ "pex30", NULL, 27 },
-	{ "xor1", NULL, 28 },
-	{ "sata1lnk", NULL, 29 },
-	{ "sata1", "sata1lnk", 30 },
-	{ }
-};
-#endif
-
-#ifdef CONFIG_ARCH_DOVE
-static const struct mvebu_soc_descr __initconst dove_gating_descr[] = {
-	{ "usb0", NULL, 0 },
-	{ "usb1", NULL, 1 },
-	{ "ge", "gephy", 2 },
-	{ "sata", NULL, 3 },
-	{ "pex0", NULL, 4 },
-	{ "pex1", NULL, 5 },
-	{ "sdio0", NULL, 8 },
-	{ "sdio1", NULL, 9 },
-	{ "nand", NULL, 10 },
-	{ "camera", NULL, 11 },
-	{ "i2s0", NULL, 12 },
-	{ "i2s1", NULL, 13 },
-	{ "crypto", NULL, 15 },
-	{ "ac97", NULL, 21 },
-	{ "pdma", NULL, 22 },
-	{ "xor0", NULL, 23 },
-	{ "xor1", NULL, 24 },
-	{ "gephy", NULL, 30 },
-	{ }
-};
-#endif
-
-#ifdef CONFIG_ARCH_KIRKWOOD
-static const struct mvebu_soc_descr __initconst kirkwood_gating_descr[] = {
-	{ "ge0", NULL, 0 },
-	{ "pex0", NULL, 2 },
-	{ "usb0", NULL, 3 },
-	{ "sdio", NULL, 4 },
-	{ "tsu", NULL, 5 },
-	{ "runit", NULL, 7 },
-	{ "xor0", NULL, 8 },
-	{ "audio", NULL, 9 },
-	{ "powersave", "cpuclk", 11 },
-	{ "sata0", NULL, 14 },
-	{ "sata1", NULL, 15 },
-	{ "xor1", NULL, 16 },
-	{ "crypto", NULL, 17 },
-	{ "pex1", NULL, 18 },
-	{ "ge1", NULL, 19 },
-	{ "tdm", NULL, 20 },
-	{ }
-};
-#endif
-
-static const __initdata struct of_device_id clk_gating_match[] = {
-#ifdef CONFIG_MACH_ARMADA_370
-	{
-		.compatible = "marvell,armada-370-gating-clock",
-		.data = armada_370_gating_descr,
-	},
-#endif
-
-#ifdef CONFIG_MACH_ARMADA_XP
-	{
-		.compatible = "marvell,armada-xp-gating-clock",
-		.data = armada_xp_gating_descr,
-	},
-#endif
-
-#ifdef CONFIG_ARCH_DOVE
-	{
-		.compatible = "marvell,dove-gating-clock",
-		.data = dove_gating_descr,
-	},
-#endif
-
-#ifdef CONFIG_ARCH_KIRKWOOD
-	{
-		.compatible = "marvell,kirkwood-gating-clock",
-		.data = kirkwood_gating_descr,
-	},
-#endif
-
-	{ }
-};
-
-void __init mvebu_gating_clk_init(void)
-{
-	struct device_node *np;
-
-	for_each_matching_node(np, clk_gating_match) {
-		const struct of_device_id *match =
-			of_match_node(clk_gating_match, np);
-		mvebu_clk_gating_setup(np,
-		       (const struct mvebu_soc_descr *)match->data);
-	}
-}

drivers/clk/mvebu/clk-gating-ctrl.h

-/*
- * Marvell EBU gating clock handling
- *
- * Copyright (C) 2012 Marvell
- *
- * Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
- *
- * This file is licensed under the terms of the GNU General Public
- * License version 2.  This program is licensed "as is" without any
- * warranty of any kind, whether express or implied.
- */
-
-#ifndef __MVEBU_CLK_GATING_H
-#define __MVEBU_CLK_GATING_H
-
-#ifdef CONFIG_MVEBU_CLK_GATING
-void __init mvebu_gating_clk_init(void);
-#else
-void mvebu_gating_clk_init(void) {}
-#endif
-
-#endif

drivers/clk/mvebu/clk.c

-/*
- * Marvell EBU SoC clock handling.
- *
- * Copyright (C) 2012 Marvell
- *
- * Gregory CLEMENT <gregory.clement@free-electrons.com>
- *
- * This file is licensed under the terms of the GNU General Public
- * License version 2.  This program is licensed "as is" without any
- * warranty of any kind, whether express or implied.
- */
-#include <linux/kernel.h>
-#include <linux/clk-provider.h>
-#include <linux/of.h>
-#include "clk-core.h"
-#include "clk-gating-ctrl.h"
-
-void __init mvebu_clocks_init(void)
-{
-	mvebu_core_clk_init();
-	mvebu_gating_clk_init();
-	of_clk_init(NULL);
-}

drivers/clk/mvebu/common.c

+/*
+ * Marvell EBU SoC common clock handling
+ *
+ * Copyright (C) 2012 Marvell
+ *
+ * Gregory CLEMENT <gregory.clement@free-electrons.com>
+ * Sebastian Hesselbarth <sebastian.hesselbarth@gmail.com>
+ * Andrew Lunn <andrew@lunn.ch>
+ *
+ * This file is licensed under the terms of the GNU General Public
+ * License version 2.  This program is licensed "as is" without any
+ * warranty of any kind, whether express or implied.
+ */
+
+#include <linux/kernel.h>
+#include <linux/clk.h>
+#include <linux/clkdev.h>
+#include <linux/clk-provider.h>
+#include <linux/io.h>
+#include <linux/of.h>
+#include <linux/of_address.h>
+
+#include "common.h"
+
+/*
+ * Core Clocks
+ */
+
+static struct clk_onecell_data clk_data;
+
+void __init mvebu_coreclk_setup(struct device_node *np,
+				const struct coreclk_soc_desc *desc)
+{
+	const char *tclk_name = "tclk";
+	const char *cpuclk_name = "cpuclk";
+	void __iomem *base;
+	unsigned long rate;
+	int n;
+
+	base = of_iomap(np, 0);
+	if (WARN_ON(!base))
+		return;
+
+	/* Allocate struct for TCLK, cpu clk, and core ratio clocks */
+	clk_data.clk_num = 2 + desc->num_ratios;
+	clk_data.clks = kzalloc(clk_data.clk_num * sizeof(struct clk *),
+				GFP_KERNEL);
+	if (WARN_ON(!clk_data.clks))
+		return;
+
+	/* Register TCLK */
+	of_property_read_string_index(np, "clock-output-names", 0,
+				      &tclk_name);
+	rate = desc->get_tclk_freq(base);
+	clk_data.clks[0] = clk_register_fixed_rate(NULL, tclk_name, NULL,
+						   CLK_IS_ROOT, rate);
+	WARN_ON(IS_ERR(clk_data.clks[0]));
+
+	/* Register CPU clock */
+	of_property_read_string_index(np, "clock-output-names", 1,
+				      &cpuclk_name);
+	rate = desc->get_cpu_freq(base);
+	clk_data.clks[1] = clk_register_fixed_rate(NULL, cpuclk_name, NULL,
+						   CLK_IS_ROOT, rate);
+	WARN_ON(IS_ERR(clk_data.clks[1]));
+
+	/* Register fixed-factor clocks derived from CPU clock */
+	for (n = 0; n < desc->num_ratios; n++) {
+		const char *rclk_name = desc->ratios[n].name;
+		int mult, div;
+
+		of_property_read_string_index(np, "clock-output-names",
+					      2+n, &rclk_name);
+		desc->get_clk_ratio(base, desc->ratios[n].id, &mult, &div);
+		clk_data.clks[2+n] = clk_register_fixed_factor(NULL, rclk_name,
+				       cpuclk_name, 0, mult, div);
+		WARN_ON(IS_ERR(clk_data.clks[2+n]));
+	};
+
+	/* SAR register isn't needed anymore */
+	iounmap(base);
+
+	of_clk_add_provider(np, of_clk_src_onecell_get, &clk_data);
+}
+
+/*
+ * Clock Gating Control
+ */
+
+struct clk_gating_ctrl {
+	spinlock_t lock;
+	struct clk **gates;
+	int num_gates;
+};
+
+#define to_clk_gate(_hw) container_of(_hw, struct clk_gate, hw)
+
+static struct clk *clk_gating_get_src(
+	struct of_phandle_args *clkspec, void *data)
+{
+	struct clk_gating_ctrl *ctrl = (struct clk_gating_ctrl *)data;
+	int n;
+
+	if (clkspec->args_count < 1)
+		return ERR_PTR(-EINVAL);
+
+	for (n = 0; n < ctrl->num_gates; n++) {
+		struct clk_gate *gate =
+			to_clk_gate(__clk_get_hw(ctrl->gates[n]));
+		if (clkspec->args[0] == gate->bit_idx)
+			return ctrl->gates[n];
+	}
+	return ERR_PTR(-ENODEV);
+}
+
+void __init mvebu_clk_gating_setup(struct device_node *np,
+				   const struct clk_gating_soc_desc *desc)
+{
+	struct clk_gating_ctrl *ctrl;
+	struct clk *clk;
+	void __iomem *base;
+	const char *default_parent = NULL;
+	int n;
+
+	base = of_iomap(np, 0);
+	if (WARN_ON(!base))
+		return;
+
+	clk = of_clk_get(np, 0);
+	if (!IS_ERR(clk)) {
+		default_parent = __clk_get_name(clk);
+		clk_put(clk);
+	}
+
+	ctrl = kzalloc(sizeof(*ctrl), GFP_KERNEL);
+	if (WARN_ON(!ctrl))
+		return;
+
+	spin_lock_init(&ctrl->lock);
+
+	/* Count, allocate, and register clock gates */
+	for (n = 0; desc[n].name;)
+		n++;
+
+	ctrl->num_gates = n;
+	ctrl->gates = kzalloc(ctrl->num_gates * sizeof(struct clk *),
+			      GFP_KERNEL);
+	if (WARN_ON(!ctrl->gates)) {
+		kfree(ctrl);
+		return;
+	}
+
+	for (n = 0; n < ctrl->num_gates; n++) {
+		const char *parent =
+			(desc[n].parent) ? desc[n].parent : default_parent;
+		ctrl->gates[n] = clk_register_gate(NULL, desc[n].name, parent,
+					desc[n].flags, base, desc[n].bit_idx,
+					0, &ctrl->lock);
+		WARN_ON(IS_ERR(ctrl->gates[n]));
+	}
+
+	of_clk_add_provider(np, clk_gating_get_src, ctrl);
+}

drivers/clk/mvebu/common.h

+/*
+ * Marvell EBU SoC common clock handling
+ *
+ * Copyright (C) 2012 Marvell
+ *
+ * Gregory CLEMENT <gregory.clement@free-electrons.com>
+ * Sebastian Hesselbarth <sebastian.hesselbarth@gmail.com>
+ * Andrew Lunn <andrew@lunn.ch>
+ *
+ * This file is licensed under the terms of the GNU General Public
+ * License version 2. This program is licensed "as is" without any
+ * warranty of any kind, whether express or implied.
+ */
+
+#ifndef __CLK_MVEBU_COMMON_H_
+#define __CLK_MVEBU_COMMON_H_
+
+#include <linux/kernel.h>
+
+struct device_node;
+
+struct coreclk_ratio {
+	int id;
+	const char *name;
+};
+
+struct coreclk_soc_desc {
+	u32 (*get_tclk_freq)(void __iomem *sar);
+	u32 (*get_cpu_freq)(void __iomem *sar);
+	void (*get_clk_ratio)(void __iomem *sar, int id, int *mult, int *div);
+	const struct coreclk_ratio *ratios;
+	int num_ratios;
+};
+
+struct clk_gating_soc_desc {
+	const char *name;
+	const char *parent;
+	int bit_idx;
+	unsigned long flags;
+};
+
+void __init mvebu_coreclk_setup(struct device_node *np,
+				const struct coreclk_soc_desc *desc);
+
+void __init mvebu_clk_gating_setup(struct device_node *np,
+				   const struct clk_gating_soc_desc *desc);
+
+#endif

drivers/clk/mvebu/dove.c

+/*
+ * Marvell Dove SoC clocks
+ *
+ * Copyright (C) 2012 Marvell
+ *
+ * Gregory CLEMENT <gregory.clement@free-electrons.com>
+ * Sebastian Hesselbarth <sebastian.hesselbarth@gmail.com>
+ * Andrew Lunn <andrew@lunn.ch>
+ *
+ * This file is licensed under the terms of the GNU General Public
+ * License version 2.  This program is licensed "as is" without any
+ * warranty of any kind, whether express or implied.
+ */
+
+#include <linux/kernel.h>
+#include <linux/clk-provider.h>
+#include <linux/io.h>
+#include <linux/of.h>
+#include "common.h"
+
+/*
+ * Core Clocks
+ *
+ * Dove PLL sample-at-reset configuration
+ *
+ * SAR0[8:5]   : CPU frequency
+ *		 5  = 1000 MHz
+ *		 6  =  933 MHz
+ *		 7  =  933 MHz
+ *		 8  =  800 MHz
+ *		 9  =  800 MHz
+ *		 10 =  800 MHz
+ *		 11 = 1067 MHz
+ *		 12 =  667 MHz
+ *		 13 =  533 MHz
+ *		 14 =  400 MHz
+ *		 15 =  333 MHz
+ *		 others reserved.
+ *
+ * SAR0[11:9]  : CPU to L2 Clock divider ratio
+ *		 0 = (1/1) * CPU
+ *		 2 = (1/2) * CPU
+ *		 4 = (1/3) * CPU
+ *		 6 = (1/4) * CPU
+ *		 others reserved.
+ *
+ * SAR0[15:12] : CPU to DDR DRAM Clock divider ratio
+ *		 0  = (1/1) * CPU
+ *		 2  = (1/2) * CPU
+ *		 3  = (2/5) * CPU
+ *		 4  = (1/3) * CPU
+ *		 6  = (1/4) * CPU
+ *		 8  = (1/5) * CPU
+ *		 10 = (1/6) * CPU
+ *		 12 = (1/7) * CPU
+ *		 14 = (1/8) * CPU
+ *		 15 = (1/10) * CPU
+ *		 others reserved.
+ *
+ * SAR0[24:23] : TCLK frequency
+ *		 0 = 166 MHz
+ *		 1 = 125 MHz
+ *		 others reserved.
+ */
+
+#define SAR_DOVE_CPU_FREQ		5
+#define SAR_DOVE_CPU_FREQ_MASK		0xf
+#define SAR_DOVE_L2_RATIO		9
+#define SAR_DOVE_L2_RATIO_MASK		0x7
+#define SAR_DOVE_DDR_RATIO		12
+#define SAR_DOVE_DDR_RATIO_MASK		0xf
+#define SAR_DOVE_TCLK_FREQ		23
+#define SAR_DOVE_TCLK_FREQ_MASK		0x3
+
+enum { DOVE_CPU_TO_L2, DOVE_CPU_TO_DDR };
+
+static const struct coreclk_ratio __initconst dove_coreclk_ratios[] = {
+	{ .id = DOVE_CPU_TO_L2, .name = "l2clk", },
+	{ .id = DOVE_CPU_TO_DDR, .name = "ddrclk", }
+};
+
+static const u32 __initconst dove_tclk_freqs[] = {
+	166666667,
+	125000000,
+	0, 0
+};
+
+static u32 __init dove_get_tclk_freq(void __iomem *sar)
+{
+	u32 opt = (readl(sar) >> SAR_DOVE_TCLK_FREQ) &
+		SAR_DOVE_TCLK_FREQ_MASK;
+	return dove_tclk_freqs[opt];
+}
+
+static const u32 __initconst dove_cpu_freqs[] = {
+	0, 0, 0, 0, 0,
+	1000000000,
+	933333333, 933333333,
+	800000000, 800000000, 800000000,
+	1066666667,
+	666666667,
+	533333333,
+	400000000,
+	333333333
+};
+
+static u32 __init dove_get_cpu_freq(void __iomem *sar)
+{
+	u32 opt = (readl(sar) >> SAR_DOVE_CPU_FREQ) &
+		SAR_DOVE_CPU_FREQ_MASK;
+	return dove_cpu_freqs[opt];
+}
+
+static const int __initconst dove_cpu_l2_ratios[8][2] = {
+	{ 1, 1 }, { 0, 1 }, { 1, 2 }, { 0, 1 },
+	{ 1, 3 }, { 0, 1 }, { 1, 4 }, { 0, 1 }
+};
+
+static const int __initconst dove_cpu_ddr_ratios[16][2] = {
+	{ 1, 1 }, { 0, 1 }, { 1, 2 }, { 2, 5 },
+	{ 1, 3 }, { 0, 1 }, { 1, 4 }, { 0, 1 },
+	{ 1, 5 }, { 0, 1 }, { 1, 6 }, { 0, 1 },
+	{ 1, 7 }, { 0, 1 }, { 1, 8 }, { 1, 10 }
+};
+
+static void __init dove_get_clk_ratio(
+	void __iomem *sar, int id, int *mult, int *div)
+{
+	switch (id) {
+	case DOVE_CPU_TO_L2:
+	{
+		u32 opt = (readl(sar) >> SAR_DOVE_L2_RATIO) &
+			SAR_DOVE_L2_RATIO_MASK;
+		*mult = dove_cpu_l2_ratios[opt][0];
+		*div = dove_cpu_l2_ratios[opt][1];
+		break;
+	}
+	case DOVE_CPU_TO_DDR:
+	{
+		u32 opt = (readl(sar) >> SAR_DOVE_DDR_RATIO) &
+			SAR_DOVE_DDR_RATIO_MASK;
+		*mult = dove_cpu_ddr_ratios[opt][0];
+		*div = dove_cpu_ddr_ratios[opt][1];
+		break;
+	}
+	}
+}
+
+static const struct coreclk_soc_desc dove_coreclks = {
+	.get_tclk_freq = dove_get_tclk_freq,
+	.get_cpu_freq = dove_get_cpu_freq,
+	.get_clk_ratio = dove_get_clk_ratio,
+	.ratios = dove_coreclk_ratios,
+	.num_ratios = ARRAY_SIZE(dove_coreclk_ratios),
+};
+
+static void __init dove_coreclk_init(struct device_node *np)
+{
+	mvebu_coreclk_setup(np, &dove_coreclks);
+}
+CLK_OF_DECLARE(dove_core_clk, "marvell,dove-core-clock", dove_coreclk_init);
+
+/*
+ * Clock Gating Control
+ */
+
+static const struct clk_gating_soc_desc __initconst dove_gating_desc[] = {
+	{ "usb0", NULL, 0, 0 },
+	{ "usb1", NULL, 1, 0 },
+	{ "ge",	"gephy", 2, 0 },
+	{ "sata", NULL, 3, 0 },
+	{ "pex0", NULL, 4, 0 },
+	{ "pex1", NULL, 5, 0 },
+	{ "sdio0", NULL, 8, 0 },
+	{ "sdio1", NULL, 9, 0 },
+	{ "nand", NULL, 10, 0 },
+	{ "camera", NULL, 11, 0 },
+	{ "i2s0", NULL, 12, 0 },
+	{ "i2s1", NULL, 13, 0 },
+	{ "crypto", NULL, 15, 0 },
+	{ "ac97", NULL, 21, 0 },
+	{ "pdma", NULL, 22, 0 },
+	{ "xor0", NULL, 23, 0 },
+	{ "xor1", NULL, 24, 0 },
+	{ "gephy", NULL, 30, 0 },
+	{ }
+};
+
+static void __init dove_clk_gating_init(struct device_node *np)
+{
+	mvebu_clk_gating_setup(np, dove_gating_desc);
+}
+CLK_OF_DECLARE(dove_clk_gating, "marvell,dove-gating-clock",
+	       dove_clk_gating_init);

drivers/clk/mvebu/kirkwood.c

+/*
+ * Marvell Kirkwood SoC clocks
+ *
+ * Copyright (C) 2012 Marvell
+ *
+ * Gregory CLEMENT <gregory.clement@free-electrons.com>
+ * Sebastian Hesselbarth <sebastian.hesselbarth@gmail.com>
+ * Andrew Lunn <andrew@lunn.ch>
+ *
+ * This file is licensed under the terms of the GNU General Public
+ * License version 2.  This program is licensed "as is" without any
+ * warranty of any kind, whether express or implied.
+ */
+
+#include <linux/kernel.h>
+#include <linux/clk-provider.h>
+#include <linux/io.h>
+#include <linux/of.h>
+#include "common.h"
+
+/*
+ * Core Clocks
+ *
+ * Kirkwood PLL sample-at-reset configuration
+ * (6180 has different SAR layout than other Kirkwood SoCs)
+ *
+ * SAR0[4:3,22,1] : CPU frequency (6281,6292,6282)
+ *	4  =  600 MHz
+ *	6  =  800 MHz
+ *	7  = 1000 MHz
+ *	9  = 1200 MHz
+ *	12 = 1500 MHz
+ *	13 = 1600 MHz
+ *	14 = 1800 MHz
+ *	15 = 2000 MHz
+ *	others reserved.
+ *
+ * SAR0[19,10:9] : CPU to L2 Clock divider ratio (6281,6292,6282)
+ *	1 = (1/2) * CPU
+ *	3 = (1/3) * CPU
+ *	5 = (1/4) * CPU
+ *	others reserved.
+ *
+ * SAR0[8:5] : CPU to DDR DRAM Clock divider ratio (6281,6292,6282)
+ *	2 = (1/2) * CPU
+ *	4 = (1/3) * CPU
+ *	6 = (1/4) * CPU
+ *	7 = (2/9) * CPU
+ *	8 = (1/5) * CPU
+ *	9 = (1/6) * CPU
+ *	others reserved.
+ *
+ * SAR0[4:2] : Kirkwood 6180 cpu/l2/ddr clock configuration (6180 only)
+ *	5 = [CPU =  600 MHz, L2 = (1/2) * CPU, DDR = 200 MHz = (1/3) * CPU]
+ *	6 = [CPU =  800 MHz, L2 = (1/2) * CPU, DDR = 200 MHz = (1/4) * CPU]
+ *	7 = [CPU = 1000 MHz, L2 = (1/2) * CPU, DDR = 200 MHz = (1/5) * CPU]
+ *	others reserved.
+ *
+ * SAR0[21] : TCLK frequency
+ *	0 = 200 MHz
+ *	1 = 166 MHz
+ *	others reserved.
+ */
+
+#define SAR_KIRKWOOD_CPU_FREQ(x)	\
+	(((x & (1 <<  1)) >>  1) |	\
+	 ((x & (1 << 22)) >> 21) |	\
+	 ((x & (3 <<  3)) >>  1))
+#define SAR_KIRKWOOD_L2_RATIO(x)	\
+	(((x & (3 <<  9)) >> 9) |	\
+	 (((x & (1 << 19)) >> 17)))
+#define SAR_KIRKWOOD_DDR_RATIO		5
+#define SAR_KIRKWOOD_DDR_RATIO_MASK	0xf
+#define SAR_MV88F6180_CLK		2
+#define SAR_MV88F6180_CLK_MASK		0x7
+#define SAR_KIRKWOOD_TCLK_FREQ		21
+#define SAR_KIRKWOOD_TCLK_FREQ_MASK	0x1
+
+enum { KIRKWOOD_CPU_TO_L2, KIRKWOOD_CPU_TO_DDR };
+
+static const struct coreclk_ratio __initconst kirkwood_coreclk_ratios[] = {
+	{ .id = KIRKWOOD_CPU_TO_L2, .name = "l2clk", },
+	{ .id = KIRKWOOD_CPU_TO_DDR, .name = "ddrclk", }
+};
+
+static u32 __init kirkwood_get_tclk_freq(void __iomem *sar)
+{
+	u32 opt = (readl(sar) >> SAR_KIRKWOOD_TCLK_FREQ) &
+		SAR_KIRKWOOD_TCLK_FREQ_MASK;
+	return (opt) ? 166666667 : 200000000;
+}
+
+static const u32 __initconst kirkwood_cpu_freqs[] = {
+	0, 0, 0, 0,
+	600000000,
+	0,
+	800000000,
+	1000000000,
+	0,
+	1200000000,
+	0, 0,
+	1500000000,
+	1600000000,
+	1800000000,
+	2000000000
+};
+
+static u32 __init kirkwood_get_cpu_freq(void __iomem *sar)
+{
+	u32 opt = SAR_KIRKWOOD_CPU_FREQ(readl(sar));
+	return kirkwood_cpu_freqs[opt];
+}
+
+static const int __initconst kirkwood_cpu_l2_ratios[8][2] = {
+	{ 0, 1 }, { 1, 2 }, { 0, 1 }, { 1, 3 },
+	{ 0, 1 }, { 1, 4 }, { 0, 1 }, { 0, 1 }
+};
+
+static const int __initconst kirkwood_cpu_ddr_ratios[16][2] = {
+	{ 0, 1 }, { 0, 1 }, { 1, 2 }, { 0, 1 },
+	{ 1, 3 }, { 0, 1 }, { 1, 4 }, { 2, 9 },
+	{ 1, 5 }, { 1, 6 }, { 0, 1 }, { 0, 1 },
+	{ 0, 1 }, { 0, 1 }, { 0, 1 }, { 0, 1 }
+};
+
+static void __init kirkwood_get_clk_ratio(
+	void __iomem *sar, int id, int *mult, int *div)
+{
+	switch (id) {
+	case KIRKWOOD_CPU_TO_L2:
+	{
+		u32 opt = SAR_KIRKWOOD_L2_RATIO(readl(sar));
+		*mult = kirkwood_cpu_l2_ratios[opt][0];
+		*div = kirkwood_cpu_l2_ratios[opt][1];
+		break;
+	}
+	case KIRKWOOD_CPU_TO_DDR:
+	{
+		u32 opt = (readl(sar) >> SAR_KIRKWOOD_DDR_RATIO) &
+			SAR_KIRKWOOD_DDR_RATIO_MASK;
+		*mult = kirkwood_cpu_ddr_ratios[opt][0];
+		*div = kirkwood_cpu_ddr_ratios[opt][1];
+		break;
+	}
+	}
+}
+
+static const u32 __initconst mv88f6180_cpu_freqs[] = {
+	0, 0, 0, 0, 0,
+	600000000,
+	800000000,
+	1000000000
+};
+
+static u32 __init mv88f6180_get_cpu_freq(void __iomem *sar)
+{
+	u32 opt = (readl(sar) >> SAR_MV88F6180_CLK) & SAR_MV88F6180_CLK_MASK;
+	return mv88f6180_cpu_freqs[opt];
+}
+
+static const int __initconst mv88f6180_cpu_ddr_ratios[8][2] = {
+	{ 0, 1 }, { 0, 1 }, { 0, 1 }, { 0, 1 },
+	{ 0, 1 }, { 1, 3 }, { 1, 4 }, { 1, 5 }
+};
+
+static void __init mv88f6180_get_clk_ratio(
+	void __iomem *sar, int id, int *mult, int *div)
+{
+	switch (id) {
+	case KIRKWOOD_CPU_TO_L2:
+	{
+		/* mv88f6180 has a fixed 1:2 CPU-to-L2 ratio */
+		*mult = 1;
+		*div = 2;
+		break;
+	}
+	case KIRKWOOD_CPU_TO_DDR:
+	{
+		u32 opt = (readl(sar) >> SAR_MV88F6180_CLK) &
+			SAR_MV88F6180_CLK_MASK;
+		*mult = mv88f6180_cpu_ddr_ratios[opt][0];
+		*div = mv88f6180_cpu_ddr_ratios[opt][1];
+		break;
+	}
+	}
+}
+
+static const struct coreclk_soc_desc kirkwood_coreclks = {
+	.get_tclk_freq = kirkwood_get_tclk_freq,
+	.get_cpu_freq = kirkwood_get_cpu_freq,
+	.get_clk_ratio = kirkwood_get_clk_ratio,
+	.ratios = kirkwood_coreclk_ratios,
+	.num_ratios = ARRAY_SIZE(kirkwood_coreclk_ratios),
+};
+
+static void __init kirkwood_coreclk_init(struct device_node *np)
+{
+	mvebu_coreclk_setup(np, &kirkwood_coreclks);
+}
+CLK_OF_DECLARE(kirkwood_core_clk, "marvell,kirkwood-core-clock",
+	       kirkwood_coreclk_init);
+
+static const struct coreclk_soc_desc mv88f6180_coreclks = {
+	.get_tclk_freq = kirkwood_get_tclk_freq,
+	.get_cpu_freq = mv88f6180_get_cpu_freq,
+	.get_clk_ratio = mv88f6180_get_clk_ratio,
+	.ratios = kirkwood_coreclk_ratios,
+	.num_ratios = ARRAY_SIZE(kirkwood_coreclk_ratios),
+};
+
+static void __init mv88f6180_coreclk_init(struct device_node *np)
+{
+	mvebu_coreclk_setup(np, &mv88f6180_coreclks);
+}
+CLK_OF_DECLARE(mv88f6180_core_clk, "marvell,mv88f6180-core-clock",
+	       mv88f6180_coreclk_init);
+
+/*
+ * Clock Gating Control
+ */
+
+static const struct clk_gating_soc_desc __initconst kirkwood_gating_desc[] = {
+	{ "ge0", NULL, 0, 0 },
+	{ "pex0", NULL, 2, 0 },
+	{ "usb0", NULL, 3, 0 },
+	{ "sdio", NULL, 4, 0 },
+	{ "tsu", NULL, 5, 0 },
+	{ "runit", NULL, 7, 0 },
+	{ "xor0", NULL, 8, 0 },
+	{ "audio", NULL, 9, 0 },
+	{ "powersave", "cpuclk", 11, 0 },
+	{ "sata0", NULL, 14, 0 },
+	{ "sata1", NULL, 15, 0 },
+	{ "xor1", NULL, 16, 0 },
+	{ "crypto", NULL, 17, 0 },
+	{ "pex1", NULL, 18, 0 },
+	{ "ge1", NULL, 19, 0 },
+	{ "tdm", NULL, 20, 0 },
+	{ }
+};
+
+static void __init kirkwood_clk_gating_init(struct device_node *np)
+{
+	mvebu_clk_gating_setup(np, kirkwood_gating_desc);
+}
+CLK_OF_DECLARE(kirkwood_clk_gating, "marvell,kirkwood-gating-clock",
+	       kirkwood_clk_gating_init);

include/linux/clk/mvebu.h

-/*
- * 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.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
- */
-
-#ifndef __CLK_MVEBU_H_
-#define __CLK_MVEBU_H_
-
-void __init mvebu_clocks_init(void);
-
-#endif