Merge branch 'clk/aspeed' into aspeed/dts

The clk/aspeed branch gets merged through the clk
maintainers, pulling it in as a prerequisite for
the aspeed G6 DT files.

* clk/aspeed:
  clk: Add support for AST2600 SoC
  clk: aspeed: Move structures to header
  clk: aspeed: Add SDIO gate
Signed-off-by: Arnd Bergmann <arnd@arndb.de>

drivers/clk/Makefile

@@ -30,6 +30,7 @@ obj-$(CONFIG_ARCH_EFM32)		+= clk-efm32gg.o
 obj-$(CONFIG_COMMON_CLK_FIXED_MMIO)	+= clk-fixed-mmio.o
 obj-$(CONFIG_COMMON_CLK_GEMINI)		+= clk-gemini.o
 obj-$(CONFIG_COMMON_CLK_ASPEED)		+= clk-aspeed.o
+obj-$(CONFIG_MACH_ASPEED_G6)		+= clk-ast2600.o
 obj-$(CONFIG_ARCH_HIGHBANK)		+= clk-highbank.o
 obj-$(CONFIG_CLK_HSDK)			+= clk-hsdk-pll.o
 obj-$(CONFIG_COMMON_CLK_LOCHNAGAR)	+= clk-lochnagar.o

drivers/clk/clk-aspeed.c

 // SPDX-License-Identifier: GPL-2.0+
+// Copyright IBM Corp
 
 #define pr_fmt(fmt) "clk-aspeed: " fmt
 
-#include <linux/clk-provider.h>
 #include <linux/mfd/syscon.h>
 #include <linux/of_address.h>
 #include <linux/of_device.h>
 #include <linux/platform_device.h>
 #include <linux/regmap.h>
-#include <linux/reset-controller.h>
 #include <linux/slab.h>
-#include <linux/spinlock.h>
 
 #include <dt-bindings/clock/aspeed-clock.h>
 
+#include "clk-aspeed.h"
+
 #define ASPEED_NUM_CLKS		36
 
 #define ASPEED_RESET2_OFFSET	32
@@ -42,48 +42,6 @@ static struct clk_hw_onecell_data *aspeed_clk_data;
 
 static void __iomem *scu_base;
 
-/**
- * struct aspeed_gate_data - Aspeed gated clocks
- * @clock_idx: bit used to gate this clock in the clock register
- * @reset_idx: bit used to reset this IP in the reset register. -1 if no
- *             reset is required when enabling the clock
- * @name: the clock name
- * @parent_name: the name of the parent clock
- * @flags: standard clock framework flags
- */
-struct aspeed_gate_data {
-	u8		clock_idx;
-	s8		reset_idx;
-	const char	*name;
-	const char	*parent_name;
-	unsigned long	flags;
-};
-
-/**
- * struct aspeed_clk_gate - Aspeed specific clk_gate structure
- * @hw:		handle between common and hardware-specific interfaces
- * @reg:	register controlling gate
- * @clock_idx:	bit used to gate this clock in the clock register
- * @reset_idx:	bit used to reset this IP in the reset register. -1 if no
- *		reset is required when enabling the clock
- * @flags:	hardware-specific flags
- * @lock:	register lock
- *
- * Some of the clocks in the Aspeed SoC must be put in reset before enabling.
- * This modified version of clk_gate allows an optional reset bit to be
- * specified.
- */
-struct aspeed_clk_gate {
-	struct clk_hw	hw;
-	struct regmap	*map;
-	u8		clock_idx;
-	s8		reset_idx;
-	u8		flags;
-	spinlock_t	*lock;
-};
-
-#define to_aspeed_clk_gate(_hw) container_of(_hw, struct aspeed_clk_gate, hw)
-
 /* TODO: ask Aspeed about the actual parent data */
 static const struct aspeed_gate_data aspeed_gates[] = {
 	/*				 clk rst   name			parent	flags */
@@ -208,13 +166,6 @@ static struct clk_hw *aspeed_ast2500_calc_pll(const char *name, u32 val)
 			mult, div);
 }
 
-struct aspeed_clk_soc_data {
-	const struct clk_div_table *div_table;
-	const struct clk_div_table *eclk_div_table;
-	const struct clk_div_table *mac_div_table;
-	struct clk_hw *(*calc_pll)(const char *name, u32 val);
-};
-
 static const struct aspeed_clk_soc_data ast2500_data = {
 	.div_table = ast2500_div_table,
 	.eclk_div_table = ast2500_eclk_div_table,
@@ -315,18 +266,6 @@ static const struct clk_ops aspeed_clk_gate_ops = {
 	.is_enabled = aspeed_clk_is_enabled,
 };
 
-/**
- * struct aspeed_reset - Aspeed reset controller
- * @map: regmap to access the containing system controller
- * @rcdev: reset controller device
- */
-struct aspeed_reset {
-	struct regmap			*map;
-	struct reset_controller_dev	rcdev;
-};
-
-#define to_aspeed_reset(p) container_of((p), struct aspeed_reset, rcdev)
-
 static const u8 aspeed_resets[] = {
 	/* SCU04 resets */
 	[ASPEED_RESET_XDMA]	= 25,
@@ -500,9 +439,14 @@ static int aspeed_clk_probe(struct platform_device *pdev)
 		return PTR_ERR(hw);
 	aspeed_clk_data->hws[ASPEED_CLK_MPLL] =	hw;
 
-	/* SD/SDIO clock divider (TODO: There's a gate too) */
-	hw = clk_hw_register_divider_table(dev, "sdio", "hpll", 0,
-			scu_base + ASPEED_CLK_SELECTION, 12, 3, 0,
+	/* SD/SDIO clock divider and gate */
+	hw = clk_hw_register_gate(dev, "sd_extclk_gate", "hpll", 0,
+				  scu_base + ASPEED_CLK_SELECTION, 15, 0,
+				  &aspeed_clk_lock);
+	if (IS_ERR(hw))
+		return PTR_ERR(hw);
+	hw = clk_hw_register_divider_table(dev, "sd_extclk", "sd_extclk_gate",
+			0, scu_base + ASPEED_CLK_SELECTION, 12, 3, 0,
 			soc_data->div_table,
 			&aspeed_clk_lock);
 	if (IS_ERR(hw))

drivers/clk/clk-aspeed.h

+/* SPDX-License-Identifier: GPL-2.0-or-later */
+/*
+ * Structures used by ASPEED clock drivers
+ *
+ * Copyright 2019 IBM Corp.
+ */
+
+#include <linux/clk-provider.h>
+#include <linux/kernel.h>
+#include <linux/reset-controller.h>
+#include <linux/spinlock.h>
+
+struct clk_div_table;
+struct regmap;
+
+/**
+ * struct aspeed_gate_data - Aspeed gated clocks
+ * @clock_idx: bit used to gate this clock in the clock register
+ * @reset_idx: bit used to reset this IP in the reset register. -1 if no
+ *             reset is required when enabling the clock
+ * @name: the clock name
+ * @parent_name: the name of the parent clock
+ * @flags: standard clock framework flags
+ */
+struct aspeed_gate_data {
+	u8		clock_idx;
+	s8		reset_idx;
+	const char	*name;
+	const char	*parent_name;
+	unsigned long	flags;
+};
+
+/**
+ * struct aspeed_clk_gate - Aspeed specific clk_gate structure
+ * @hw:		handle between common and hardware-specific interfaces
+ * @reg:	register controlling gate
+ * @clock_idx:	bit used to gate this clock in the clock register
+ * @reset_idx:	bit used to reset this IP in the reset register. -1 if no
+ *		reset is required when enabling the clock
+ * @flags:	hardware-specific flags
+ * @lock:	register lock
+ *
+ * Some of the clocks in the Aspeed SoC must be put in reset before enabling.
+ * This modified version of clk_gate allows an optional reset bit to be
+ * specified.
+ */
+struct aspeed_clk_gate {
+	struct clk_hw	hw;
+	struct regmap	*map;
+	u8		clock_idx;
+	s8		reset_idx;
+	u8		flags;
+	spinlock_t	*lock;
+};
+
+#define to_aspeed_clk_gate(_hw) container_of(_hw, struct aspeed_clk_gate, hw)
+
+/**
+ * struct aspeed_reset - Aspeed reset controller
+ * @map: regmap to access the containing system controller
+ * @rcdev: reset controller device
+ */
+struct aspeed_reset {
+	struct regmap			*map;
+	struct reset_controller_dev	rcdev;
+};
+
+#define to_aspeed_reset(p) container_of((p), struct aspeed_reset, rcdev)
+
+/**
+ * struct aspeed_clk_soc_data - Aspeed SoC specific divisor information
+ * @div_table: Common divider lookup table
+ * @eclk_div_table: Divider lookup table for ECLK
+ * @mac_div_table: Divider lookup table for MAC (Ethernet) clocks
+ * @calc_pll: Callback to maculate common PLL settings
+ */
+struct aspeed_clk_soc_data {
+	const struct clk_div_table *div_table;
+	const struct clk_div_table *eclk_div_table;
+	const struct clk_div_table *mac_div_table;
+	struct clk_hw *(*calc_pll)(const char *name, u32 val);
+};

include/dt-bindings/clock/ast2600-clock.h

+/* SPDX-License-Identifier: GPL-2.0-or-later OR MIT */
+#ifndef DT_BINDINGS_AST2600_CLOCK_H
+#define DT_BINDINGS_AST2600_CLOCK_H
+
+#define ASPEED_CLK_GATE_ECLK		0
+#define ASPEED_CLK_GATE_GCLK		1
+
+#define ASPEED_CLK_GATE_MCLK		2
+
+#define ASPEED_CLK_GATE_VCLK		3
+#define ASPEED_CLK_GATE_BCLK		4
+#define ASPEED_CLK_GATE_DCLK		5
+
+#define ASPEED_CLK_GATE_LCLK		6
+#define ASPEED_CLK_GATE_LHCCLK		7
+
+#define ASPEED_CLK_GATE_D1CLK		8
+#define ASPEED_CLK_GATE_YCLK		9
+
+#define ASPEED_CLK_GATE_REF0CLK		10
+#define ASPEED_CLK_GATE_REF1CLK		11
+
+#define ASPEED_CLK_GATE_ESPICLK		12
+
+#define ASPEED_CLK_GATE_USBUHCICLK	13
+#define ASPEED_CLK_GATE_USBPORT1CLK	14
+#define ASPEED_CLK_GATE_USBPORT2CLK	15
+
+#define ASPEED_CLK_GATE_RSACLK		16
+#define ASPEED_CLK_GATE_RVASCLK		17
+
+#define ASPEED_CLK_GATE_MAC1CLK		18
+#define ASPEED_CLK_GATE_MAC2CLK		19
+#define ASPEED_CLK_GATE_MAC3CLK		20
+#define ASPEED_CLK_GATE_MAC4CLK		21
+
+#define ASPEED_CLK_GATE_UART1CLK	22
+#define ASPEED_CLK_GATE_UART2CLK	23
+#define ASPEED_CLK_GATE_UART3CLK	24
+#define ASPEED_CLK_GATE_UART4CLK	25
+#define ASPEED_CLK_GATE_UART5CLK	26
+#define ASPEED_CLK_GATE_UART6CLK	27
+#define ASPEED_CLK_GATE_UART7CLK	28
+#define ASPEED_CLK_GATE_UART8CLK	29
+#define ASPEED_CLK_GATE_UART9CLK	30
+#define ASPEED_CLK_GATE_UART10CLK	31
+#define ASPEED_CLK_GATE_UART11CLK	32
+#define ASPEED_CLK_GATE_UART12CLK	33
+#define ASPEED_CLK_GATE_UART13CLK	34
+
+#define ASPEED_CLK_GATE_SDCLK		35
+#define ASPEED_CLK_GATE_EMMCCLK		36
+
+#define ASPEED_CLK_GATE_I3C0CLK		37
+#define ASPEED_CLK_GATE_I3C1CLK		38
+#define ASPEED_CLK_GATE_I3C2CLK		39
+#define ASPEED_CLK_GATE_I3C3CLK		40
+#define ASPEED_CLK_GATE_I3C4CLK		41
+#define ASPEED_CLK_GATE_I3C5CLK		42
+#define ASPEED_CLK_GATE_I3C6CLK		43
+#define ASPEED_CLK_GATE_I3C7CLK		44
+
+#define ASPEED_CLK_GATE_FSICLK		45
+
+#define ASPEED_CLK_HPLL			46
+#define ASPEED_CLK_MPLL			47
+#define ASPEED_CLK_DPLL			48
+#define ASPEED_CLK_EPLL			49
+#define ASPEED_CLK_APLL			50
+#define ASPEED_CLK_AHB			51
+#define ASPEED_CLK_APB1			52
+#define ASPEED_CLK_APB2			53
+#define ASPEED_CLK_BCLK			54
+#define ASPEED_CLK_D1CLK		55
+#define ASPEED_CLK_VCLK			56
+#define ASPEED_CLK_LHCLK		57
+#define ASPEED_CLK_UART			58
+#define ASPEED_CLK_UARTX		59
+#define ASPEED_CLK_SDIO			60
+#define ASPEED_CLK_EMMC			61
+#define ASPEED_CLK_ECLK			62
+#define ASPEED_CLK_ECLK_MUX		63
+#define ASPEED_CLK_MAC12		64
+#define ASPEED_CLK_MAC34		65
+#define ASPEED_CLK_USBPHY_40M		66
+
+/* Only list resets here that are not part of a gate */
+#define ASPEED_RESET_ADC		55
+#define ASPEED_RESET_JTAG_MASTER2	54
+#define ASPEED_RESET_I3C_DMA		39
+#define ASPEED_RESET_PWM		37
+#define ASPEED_RESET_PECI		36
+#define ASPEED_RESET_MII		35
+#define ASPEED_RESET_I2C		34
+#define ASPEED_RESET_H2X		31
+#define ASPEED_RESET_GP_MCU		30
+#define ASPEED_RESET_DP_MCU		29
+#define ASPEED_RESET_DP			28
+#define ASPEED_RESET_RC_XDMA		27
+#define ASPEED_RESET_GRAPHICS		26
+#define ASPEED_RESET_DEV_XDMA		25
+#define ASPEED_RESET_DEV_MCTP		24
+#define ASPEED_RESET_RC_MCTP		23
+#define ASPEED_RESET_JTAG_MASTER	22
+#define ASPEED_RESET_PCIE_DEV_O		21
+#define ASPEED_RESET_PCIE_DEV_OEN	20
+#define ASPEED_RESET_PCIE_RC_O		19
+#define ASPEED_RESET_PCIE_RC_OEN	18
+#define ASPEED_RESET_PCI_DP		5
+#define ASPEED_RESET_AHB		1
+#define ASPEED_RESET_SDRAM		0
+
+#endif