Initial commit; kernel source import

drivers/clk/ux500/Makefile

@@ -0,0 +1,16 @@
+#
+# Makefile for ux500 clocks
+#
+
+# Clock types
+obj-y += clk-prcc.o
+obj-y += clk-prcmu.o
+obj-y += clk-sysctrl.o
+
+# Clock definitions
+obj-y += u8500_clk.o
+obj-y += u9540_clk.o
+obj-y += u8540_clk.o
+
+# ABX500 clock driver
+obj-y += abx500-clk.o

drivers/clk/ux500/abx500-clk.c

@@ -0,0 +1,138 @@
+/*
+ * abx500 clock implementation for ux500 platform.
+ *
+ * Copyright (C) 2012 ST-Ericsson SA
+ * Author: Ulf Hansson <ulf.hansson@linaro.org>
+ *
+ * License terms: GNU General Public License (GPL) version 2
+ */
+
+#include <linux/err.h>
+#include <linux/module.h>
+#include <linux/device.h>
+#include <linux/platform_device.h>
+#include <linux/mfd/abx500/ab8500.h>
+#include <linux/mfd/abx500/ab8500-sysctrl.h>
+#include <linux/clk.h>
+#include <linux/clkdev.h>
+#include <linux/clk-provider.h>
+#include <linux/mfd/dbx500-prcmu.h>
+#include "clk.h"
+
+/* Clock definitions for ab8500 */
+static int ab8500_reg_clks(struct device *dev)
+{
+	int ret;
+	struct clk *clk;
+
+	const char *intclk_parents[] = {"ab8500_sysclk", "ulpclk"};
+	u16 intclk_reg_sel[] = {0 , AB8500_SYSULPCLKCTRL1};
+	u8 intclk_reg_mask[] = {0 , AB8500_SYSULPCLKCTRL1_SYSULPCLKINTSEL_MASK};
+	u8 intclk_reg_bits[] = {
+		0 ,
+		(1 << AB8500_SYSULPCLKCTRL1_SYSULPCLKINTSEL_SHIFT)
+	};
+
+	dev_info(dev, "register clocks for ab850x\n");
+
+	/* Enable SWAT */
+	ret = ab8500_sysctrl_set(AB8500_SWATCTRL, AB8500_SWATCTRL_SWATENABLE);
+	if (ret)
+		return ret;
+
+	/* ab8500_sysclk */
+	clk = clk_reg_prcmu_gate("ab8500_sysclk", NULL, PRCMU_SYSCLK,
+				CLK_IS_ROOT);
+	clk_register_clkdev(clk, "sysclk", "ab8500-usb.0");
+	clk_register_clkdev(clk, "sysclk", "ab-iddet.0");
+	clk_register_clkdev(clk, "sysclk", "ab85xx-codec.0");
+	clk_register_clkdev(clk, "sysclk", "shrm_bus");
+
+	/* ab8500_sysclk2 */
+	clk = clk_reg_sysctrl_gate(dev , "ab8500_sysclk2", "ab8500_sysclk",
+		AB8500_SYSULPCLKCTRL1, AB8500_SYSULPCLKCTRL1_SYSCLKBUF2REQ,
+		AB8500_SYSULPCLKCTRL1_SYSCLKBUF2REQ, 0, 0);
+	clk_register_clkdev(clk, "sysclk", "0-0070");
+
+	/* ab8500_sysclk3 */
+	clk = clk_reg_sysctrl_gate(dev , "ab8500_sysclk3", "ab8500_sysclk",
+		AB8500_SYSULPCLKCTRL1, AB8500_SYSULPCLKCTRL1_SYSCLKBUF3REQ,
+		AB8500_SYSULPCLKCTRL1_SYSCLKBUF3REQ, 0, 0);
+	clk_register_clkdev(clk, "sysclk", "cg1960_core.0");
+
+	/* ab8500_sysclk4 */
+	clk = clk_reg_sysctrl_gate(dev , "ab8500_sysclk4", "ab8500_sysclk",
+		AB8500_SYSULPCLKCTRL1, AB8500_SYSULPCLKCTRL1_SYSCLKBUF4REQ,
+		AB8500_SYSULPCLKCTRL1_SYSCLKBUF4REQ, 0, 0);
+
+	/* ab_ulpclk */
+	clk = clk_reg_sysctrl_gate_fixed_rate(dev, "ulpclk", NULL,
+		AB8500_SYSULPCLKCTRL1, AB8500_SYSULPCLKCTRL1_ULPCLKREQ,
+		AB8500_SYSULPCLKCTRL1_ULPCLKREQ,
+		38400000, 9000, CLK_IS_ROOT);
+	clk_register_clkdev(clk, "ulpclk", "ab85xx-codec.0");
+
+	/* ab8500_intclk */
+	clk = clk_reg_sysctrl_set_parent(dev , "intclk", intclk_parents, 2,
+		intclk_reg_sel, intclk_reg_mask, intclk_reg_bits, 0);
+	clk_register_clkdev(clk, "intclk", "ab85xx-codec.0");
+	clk_register_clkdev(clk, NULL, "ab8500-pwm.1");
+
+	/* ab8500_audioclk */
+	clk = clk_reg_sysctrl_gate(dev , "audioclk", "intclk",
+		AB8500_SYSULPCLKCTRL1, AB8500_SYSULPCLKCTRL1_AUDIOCLKENA,
+		AB8500_SYSULPCLKCTRL1_AUDIOCLKENA, 0, 0);
+	clk_register_clkdev(clk, "audioclk", "ab85xx-codec.0");
+
+	return 0;
+}
+
+/* Clock definitions for ab8540 */
+static int ab8540_reg_clks(struct device *dev)
+{
+	return 0;
+}
+
+/* Clock definitions for ab9540 */
+static int ab9540_reg_clks(struct device *dev)
+{
+	return 0;
+}
+
+static int abx500_clk_probe(struct platform_device *pdev)
+{
+	struct ab8500 *parent = dev_get_drvdata(pdev->dev.parent);
+	int ret;
+
+	if (is_ab8500(parent) || is_ab8505(parent)) {
+		ret = ab8500_reg_clks(&pdev->dev);
+	} else if (is_ab8540(parent)) {
+		ret = ab8540_reg_clks(&pdev->dev);
+	} else if (is_ab9540(parent)) {
+		ret = ab9540_reg_clks(&pdev->dev);
+	} else {
+		dev_err(&pdev->dev, "non supported plf id\n");
+		return -ENODEV;
+	}
+
+	return ret;
+}
+
+static struct platform_driver abx500_clk_driver = {
+	.driver = {
+		.name = "abx500-clk",
+		.owner = THIS_MODULE,
+	},
+	.probe	= abx500_clk_probe,
+};
+
+static int __init abx500_clk_init(void)
+{
+	return platform_driver_register(&abx500_clk_driver);
+}
+
+arch_initcall(abx500_clk_init);
+
+MODULE_AUTHOR("Ulf Hansson <ulf.hansson@linaro.org");
+MODULE_DESCRIPTION("ABX500 clk driver");
+MODULE_LICENSE("GPL v2");

drivers/clk/ux500/clk-prcc.c

@@ -0,0 +1,163 @@
+/*
+ * PRCC clock implementation for ux500 platform.
+ *
+ * Copyright (C) 2012 ST-Ericsson SA
+ * Author: Ulf Hansson <ulf.hansson@linaro.org>
+ *
+ * License terms: GNU General Public License (GPL) version 2
+ */
+
+#include <linux/clk-provider.h>
+#include <linux/clk-private.h>
+#include <linux/slab.h>
+#include <linux/io.h>
+#include <linux/err.h>
+#include <linux/types.h>
+
+#include "clk.h"
+
+#define PRCC_PCKEN			0x000
+#define PRCC_PCKDIS			0x004
+#define PRCC_KCKEN			0x008
+#define PRCC_KCKDIS			0x00C
+#define PRCC_PCKSR			0x010
+#define PRCC_KCKSR			0x014
+
+#define to_clk_prcc(_hw) container_of(_hw, struct clk_prcc, hw)
+
+struct clk_prcc {
+	struct clk_hw hw;
+	void __iomem *base;
+	u32 cg_sel;
+	int is_enabled;
+};
+
+/* PRCC clock operations. */
+
+static int clk_prcc_pclk_enable(struct clk_hw *hw)
+{
+	struct clk_prcc *clk = to_clk_prcc(hw);
+
+	writel(clk->cg_sel, (clk->base + PRCC_PCKEN));
+	while (!(readl(clk->base + PRCC_PCKSR) & clk->cg_sel))
+		cpu_relax();
+
+	clk->is_enabled = 1;
+	return 0;
+}
+
+static void clk_prcc_pclk_disable(struct clk_hw *hw)
+{
+	struct clk_prcc *clk = to_clk_prcc(hw);
+
+	writel(clk->cg_sel, (clk->base + PRCC_PCKDIS));
+	clk->is_enabled = 0;
+}
+
+static int clk_prcc_kclk_enable(struct clk_hw *hw)
+{
+	struct clk_prcc *clk = to_clk_prcc(hw);
+
+	writel(clk->cg_sel, (clk->base + PRCC_KCKEN));
+	while (!(readl(clk->base + PRCC_KCKSR) & clk->cg_sel))
+		cpu_relax();
+
+	clk->is_enabled = 1;
+	return 0;
+}
+
+static void clk_prcc_kclk_disable(struct clk_hw *hw)
+{
+	struct clk_prcc *clk = to_clk_prcc(hw);
+
+	writel(clk->cg_sel, (clk->base + PRCC_KCKDIS));
+	clk->is_enabled = 0;
+}
+
+static int clk_prcc_is_enabled(struct clk_hw *hw)
+{
+	struct clk_prcc *clk = to_clk_prcc(hw);
+	return clk->is_enabled;
+}
+
+static struct clk_ops clk_prcc_pclk_ops = {
+	.enable = clk_prcc_pclk_enable,
+	.disable = clk_prcc_pclk_disable,
+	.is_enabled = clk_prcc_is_enabled,
+};
+
+static struct clk_ops clk_prcc_kclk_ops = {
+	.enable = clk_prcc_kclk_enable,
+	.disable = clk_prcc_kclk_disable,
+	.is_enabled = clk_prcc_is_enabled,
+};
+
+static struct clk *clk_reg_prcc(const char *name,
+				const char *parent_name,
+				resource_size_t phy_base,
+				u32 cg_sel,
+				unsigned long flags,
+				struct clk_ops *clk_prcc_ops)
+{
+	struct clk_prcc *clk;
+	struct clk_init_data clk_prcc_init;
+	struct clk *clk_reg;
+
+	if (!name) {
+		pr_err("clk_prcc: %s invalid arguments passed\n", __func__);
+		return ERR_PTR(-EINVAL);
+	}
+
+	clk = kzalloc(sizeof(struct clk_prcc), GFP_KERNEL);
+	if (!clk) {
+		pr_err("clk_prcc: %s could not allocate clk\n", __func__);
+		return ERR_PTR(-ENOMEM);
+	}
+
+	clk->base = ioremap(phy_base, SZ_4K);
+	if (!clk->base)
+		goto free_clk;
+
+	clk->cg_sel = cg_sel;
+	clk->is_enabled = 1;
+
+	clk_prcc_init.name = name;
+	clk_prcc_init.ops = clk_prcc_ops;
+	clk_prcc_init.flags = flags;
+	clk_prcc_init.parent_names = (parent_name ? &parent_name : NULL);
+	clk_prcc_init.num_parents = (parent_name ? 1 : 0);
+	clk->hw.init = &clk_prcc_init;
+
+	clk_reg = clk_register(NULL, &clk->hw);
+	if (IS_ERR_OR_NULL(clk_reg))
+		goto unmap_clk;
+
+	return clk_reg;
+
+unmap_clk:
+	iounmap(clk->base);
+free_clk:
+	kfree(clk);
+	pr_err("clk_prcc: %s failed to register clk\n", __func__);
+	return ERR_PTR(-ENOMEM);
+}
+
+struct clk *clk_reg_prcc_pclk(const char *name,
+			      const char *parent_name,
+			      resource_size_t phy_base,
+			      u32 cg_sel,
+			      unsigned long flags)
+{
+	return clk_reg_prcc(name, parent_name, phy_base, cg_sel, flags,
+			&clk_prcc_pclk_ops);
+}
+
+struct clk *clk_reg_prcc_kclk(const char *name,
+			      const char *parent_name,
+			      resource_size_t phy_base,
+			      u32 cg_sel,
+			      unsigned long flags)
+{
+	return clk_reg_prcc(name, parent_name, phy_base, cg_sel, flags,
+			&clk_prcc_kclk_ops);
+}

drivers/clk/ux500/clk-prcmu.c

@@ -0,0 +1,350 @@
+/*
+ * PRCMU clock implementation for ux500 platform.
+ *
+ * Copyright (C) 2012 ST-Ericsson SA
+ * Author: Ulf Hansson <ulf.hansson@linaro.org>
+ *
+ * License terms: GNU General Public License (GPL) version 2
+ */
+
+#include <linux/clk-provider.h>
+#include <linux/clk-private.h>
+#include <linux/mfd/dbx500-prcmu.h>
+#include <linux/slab.h>
+#include <linux/io.h>
+#include <linux/err.h>
+#include "clk.h"
+
+#define to_clk_prcmu(_hw) container_of(_hw, struct clk_prcmu, hw)
+
+struct clk_prcmu {
+	struct clk_hw hw;
+	u8 cg_sel;
+	int is_prepared;
+	int is_enabled;
+	int opp_requested;
+};
+
+/* PRCMU clock operations. */
+
+static int clk_prcmu_prepare(struct clk_hw *hw)
+{
+	int ret;
+	struct clk_prcmu *clk = to_clk_prcmu(hw);
+
+	ret = prcmu_request_clock(clk->cg_sel, true);
+	if (!ret)
+		clk->is_prepared = 1;
+
+	return ret;;
+}
+
+static void clk_prcmu_unprepare(struct clk_hw *hw)
+{
+	struct clk_prcmu *clk = to_clk_prcmu(hw);
+	if (prcmu_request_clock(clk->cg_sel, false))
+		pr_err("clk_prcmu: %s failed to disable %s.\n", __func__,
+			__clk_get_name(hw->clk));
+	else
+		clk->is_prepared = 0;
+}
+
+static int clk_prcmu_is_prepared(struct clk_hw *hw)
+{
+	struct clk_prcmu *clk = to_clk_prcmu(hw);
+	return clk->is_prepared;
+}
+
+static int clk_prcmu_enable(struct clk_hw *hw)
+{
+	struct clk_prcmu *clk = to_clk_prcmu(hw);
+	clk->is_enabled = 1;
+	return 0;
+}
+
+static void clk_prcmu_disable(struct clk_hw *hw)
+{
+	struct clk_prcmu *clk = to_clk_prcmu(hw);
+	clk->is_enabled = 0;
+}
+
+static int clk_prcmu_is_enabled(struct clk_hw *hw)
+{
+	struct clk_prcmu *clk = to_clk_prcmu(hw);
+	return clk->is_enabled;
+}
+
+static unsigned long clk_prcmu_recalc_rate(struct clk_hw *hw,
+					   unsigned long parent_rate)
+{
+	struct clk_prcmu *clk = to_clk_prcmu(hw);
+	return prcmu_clock_rate(clk->cg_sel);
+}
+
+static long clk_prcmu_round_rate(struct clk_hw *hw, unsigned long rate,
+				 unsigned long *parent_rate)
+{
+	struct clk_prcmu *clk = to_clk_prcmu(hw);
+	return prcmu_round_clock_rate(clk->cg_sel, rate);
+}
+
+static int clk_prcmu_set_rate(struct clk_hw *hw, unsigned long rate,
+			      unsigned long parent_rate)
+{
+	struct clk_prcmu *clk = to_clk_prcmu(hw);
+	return prcmu_set_clock_rate(clk->cg_sel, rate);
+}
+
+static int clk_prcmu_opp_prepare(struct clk_hw *hw)
+{
+	int err;
+	struct clk_prcmu *clk = to_clk_prcmu(hw);
+
+	if (!clk->opp_requested) {
+		err = prcmu_qos_add_requirement(PRCMU_QOS_APE_OPP,
+						(char *)__clk_get_name(hw->clk),
+						100);
+		if (err) {
+			pr_err("clk_prcmu: %s fail req APE OPP for %s.\n",
+				__func__, __clk_get_name(hw->clk));
+			return err;
+		}
+		clk->opp_requested = 1;
+	}
+
+	err = prcmu_request_clock(clk->cg_sel, true);
+	if (err) {
+		prcmu_qos_remove_requirement(PRCMU_QOS_APE_OPP,
+					(char *)__clk_get_name(hw->clk));
+		clk->opp_requested = 0;
+		return err;
+	}
+
+	clk->is_prepared = 1;
+	return 0;
+}
+
+static void clk_prcmu_opp_unprepare(struct clk_hw *hw)
+{
+	struct clk_prcmu *clk = to_clk_prcmu(hw);
+
+	if (prcmu_request_clock(clk->cg_sel, false)) {
+		pr_err("clk_prcmu: %s failed to disable %s.\n", __func__,
+			__clk_get_name(hw->clk));
+		return;
+	}
+
+	if (clk->opp_requested) {
+		prcmu_qos_remove_requirement(PRCMU_QOS_APE_OPP,
+					(char *)__clk_get_name(hw->clk));
+		clk->opp_requested = 0;
+	}
+
+	clk->is_prepared = 0;
+}
+
+static int clk_prcmu_opp_volt_prepare(struct clk_hw *hw)
+{
+	int err;
+	struct clk_prcmu *clk = to_clk_prcmu(hw);
+
+	if (!clk->opp_requested) {
+		err = prcmu_request_ape_opp_100_voltage(true);
+		if (err) {
+			pr_err("clk_prcmu: %s fail req APE OPP VOLT for %s.\n",
+				__func__, __clk_get_name(hw->clk));
+			return err;
+		}
+		clk->opp_requested = 1;
+	}
+
+	err = prcmu_request_clock(clk->cg_sel, true);
+	if (err) {
+		prcmu_request_ape_opp_100_voltage(false);
+		clk->opp_requested = 0;
+		return err;
+	}
+
+	clk->is_prepared = 1;
+	return 0;
+}
+
+static void clk_prcmu_opp_volt_unprepare(struct clk_hw *hw)
+{
+	struct clk_prcmu *clk = to_clk_prcmu(hw);
+
+	if (prcmu_request_clock(clk->cg_sel, false)) {
+		pr_err("clk_prcmu: %s failed to disable %s.\n", __func__,
+			__clk_get_name(hw->clk));
+		return;
+	}
+
+	if (clk->opp_requested) {
+		prcmu_request_ape_opp_100_voltage(false);
+		clk->opp_requested = 0;
+	}
+
+	clk->is_prepared = 0;
+}
+
+static struct clk_ops clk_prcmu_scalable_ops = {
+	.prepare = clk_prcmu_prepare,
+	.unprepare = clk_prcmu_unprepare,
+	.is_prepared = clk_prcmu_is_prepared,
+	.enable = clk_prcmu_enable,
+	.disable = clk_prcmu_disable,
+	.is_enabled = clk_prcmu_is_enabled,
+	.recalc_rate = clk_prcmu_recalc_rate,
+	.round_rate = clk_prcmu_round_rate,
+	.set_rate = clk_prcmu_set_rate,
+};
+
+static struct clk_ops clk_prcmu_gate_ops = {
+	.prepare = clk_prcmu_prepare,
+	.unprepare = clk_prcmu_unprepare,
+	.is_prepared = clk_prcmu_is_prepared,
+	.enable = clk_prcmu_enable,
+	.disable = clk_prcmu_disable,
+	.is_enabled = clk_prcmu_is_enabled,
+	.recalc_rate = clk_prcmu_recalc_rate,
+};
+
+static struct clk_ops clk_prcmu_scalable_rate_ops = {
+	.is_enabled = clk_prcmu_is_enabled,
+	.recalc_rate = clk_prcmu_recalc_rate,
+	.round_rate = clk_prcmu_round_rate,
+	.set_rate = clk_prcmu_set_rate,
+};
+
+static struct clk_ops clk_prcmu_rate_ops = {
+	.is_enabled = clk_prcmu_is_enabled,
+	.recalc_rate = clk_prcmu_recalc_rate,
+};
+
+static struct clk_ops clk_prcmu_opp_gate_ops = {
+	.prepare = clk_prcmu_opp_prepare,
+	.unprepare = clk_prcmu_opp_unprepare,
+	.is_prepared = clk_prcmu_is_prepared,
+	.enable = clk_prcmu_enable,
+	.disable = clk_prcmu_disable,
+	.is_enabled = clk_prcmu_is_enabled,
+	.recalc_rate = clk_prcmu_recalc_rate,
+};
+
+static struct clk_ops clk_prcmu_opp_volt_scalable_ops = {
+	.prepare = clk_prcmu_opp_volt_prepare,
+	.unprepare = clk_prcmu_opp_volt_unprepare,
+	.is_prepared = clk_prcmu_is_prepared,
+	.enable = clk_prcmu_enable,
+	.disable = clk_prcmu_disable,
+	.is_enabled = clk_prcmu_is_enabled,
+	.recalc_rate = clk_prcmu_recalc_rate,
+	.round_rate = clk_prcmu_round_rate,
+	.set_rate = clk_prcmu_set_rate,
+};
+
+static struct clk *clk_reg_prcmu(const char *name,
+				 const char *parent_name,
+				 u8 cg_sel,
+				 unsigned long rate,
+				 unsigned long flags,
+				 struct clk_ops *clk_prcmu_ops)
+{
+	struct clk_prcmu *clk;
+	struct clk_init_data clk_prcmu_init;
+	struct clk *clk_reg;
+
+	if (!name) {
+		pr_err("clk_prcmu: %s invalid arguments passed\n", __func__);
+		return ERR_PTR(-EINVAL);
+	}
+
+	clk = kzalloc(sizeof(struct clk_prcmu), GFP_KERNEL);
+	if (!clk) {
+		pr_err("clk_prcmu: %s could not allocate clk\n", __func__);
+		return ERR_PTR(-ENOMEM);
+	}
+
+	clk->cg_sel = cg_sel;
+	clk->is_prepared = 1;
+	clk->is_enabled = 1;
+	clk->opp_requested = 0;
+	/* "rate" can be used for changing the initial frequency */
+	if (rate)
+		prcmu_set_clock_rate(cg_sel, rate);
+
+	clk_prcmu_init.name = name;
+	clk_prcmu_init.ops = clk_prcmu_ops;
+	clk_prcmu_init.flags = flags;
+	clk_prcmu_init.parent_names = (parent_name ? &parent_name : NULL);
+	clk_prcmu_init.num_parents = (parent_name ? 1 : 0);
+	clk->hw.init = &clk_prcmu_init;
+
+	clk_reg = clk_register(NULL, &clk->hw);
+	if (IS_ERR_OR_NULL(clk_reg))
+		goto free_clk;
+
+	return clk_reg;
+
+free_clk:
+	kfree(clk);
+	pr_err("clk_prcmu: %s failed to register clk\n", __func__);
+	return ERR_PTR(-ENOMEM);
+}
+
+struct clk *clk_reg_prcmu_scalable(const char *name,
+				   const char *parent_name,
+				   u8 cg_sel,
+				   unsigned long rate,
+				   unsigned long flags)
+{
+	return clk_reg_prcmu(name, parent_name, cg_sel, rate, flags,
+			&clk_prcmu_scalable_ops);
+}
+
+struct clk *clk_reg_prcmu_gate(const char *name,
+			       const char *parent_name,
+			       u8 cg_sel,
+			       unsigned long flags)
+{
+	return clk_reg_prcmu(name, parent_name, cg_sel, 0, flags,
+			&clk_prcmu_gate_ops);
+}
+
+struct clk *clk_reg_prcmu_scalable_rate(const char *name,
+					const char *parent_name,
+					u8 cg_sel,
+					unsigned long rate,
+					unsigned long flags)
+{
+	return clk_reg_prcmu(name, parent_name, cg_sel, rate, flags,
+			&clk_prcmu_scalable_rate_ops);
+}
+
+struct clk *clk_reg_prcmu_rate(const char *name,
+			       const char *parent_name,
+			       u8 cg_sel,
+			       unsigned long flags)
+{
+	return clk_reg_prcmu(name, parent_name, cg_sel, 0, flags,
+			&clk_prcmu_rate_ops);
+}
+
+struct clk *clk_reg_prcmu_opp_gate(const char *name,
+				   const char *parent_name,
+				   u8 cg_sel,
+				   unsigned long flags)
+{
+	return clk_reg_prcmu(name, parent_name, cg_sel, 0, flags,
+			&clk_prcmu_opp_gate_ops);
+}
+
+struct clk *clk_reg_prcmu_opp_volt_scalable(const char *name,
+					    const char *parent_name,
+					    u8 cg_sel,
+					    unsigned long rate,
+					    unsigned long flags)
+{
+	return clk_reg_prcmu(name, parent_name, cg_sel, rate, flags,
+			&clk_prcmu_opp_volt_scalable_ops);
+}

drivers/clk/ux500/clk-sysctrl.c

@@ -0,0 +1,227 @@
+/*
+ * Sysctrl clock implementation for ux500 platform.
+ *
+ * Copyright (C) 2013 ST-Ericsson SA
+ * Author: Ulf Hansson <ulf.hansson@linaro.org>
+ *
+ * License terms: GNU General Public License (GPL) version 2
+ */
+
+#include <linux/clk-provider.h>
+#include <linux/mfd/abx500/ab8500-sysctrl.h>
+#include <linux/device.h>
+#include <linux/slab.h>
+#include <linux/delay.h>
+#include <linux/io.h>
+#include <linux/err.h>
+#include "clk.h"
+
+#define SYSCTRL_MAX_NUM_PARENTS 4
+
+#define to_clk_sysctrl(_hw) container_of(_hw, struct clk_sysctrl, hw)
+
+struct clk_sysctrl {
+	struct clk_hw hw;
+	struct device *dev;
+	u8 parent_index;
+	u16 reg_sel[SYSCTRL_MAX_NUM_PARENTS];
+	u8 reg_mask[SYSCTRL_MAX_NUM_PARENTS];
+	u8 reg_bits[SYSCTRL_MAX_NUM_PARENTS];
+	unsigned long rate;
+	unsigned long enable_delay_us;
+};
+
+/* Sysctrl clock operations. */
+
+static int clk_sysctrl_prepare(struct clk_hw *hw)
+{
+	int ret;
+	struct clk_sysctrl *clk = to_clk_sysctrl(hw);
+
+	ret = ab8500_sysctrl_write(clk->reg_sel[0], clk->reg_mask[0],
+				clk->reg_bits[0]);
+
+	if (!ret && clk->enable_delay_us)
+		usleep_range(clk->enable_delay_us, clk->enable_delay_us);
+
+	return ret;
+}
+
+static void clk_sysctrl_unprepare(struct clk_hw *hw)
+{
+	struct clk_sysctrl *clk = to_clk_sysctrl(hw);
+	if (ab8500_sysctrl_clear(clk->reg_sel[0], clk->reg_mask[0]))
+		dev_err(clk->dev, "clk_sysctrl: %s fail to clear %s.\n",
+			__func__, __clk_get_name(hw->clk));
+}
+
+static unsigned long clk_sysctrl_recalc_rate(struct clk_hw *hw,
+					unsigned long parent_rate)
+{
+	struct clk_sysctrl *clk = to_clk_sysctrl(hw);
+	return clk->rate;
+}
+
+static int clk_sysctrl_set_parent(struct clk_hw *hw, u8 index)
+{
+	struct clk_sysctrl *clk = to_clk_sysctrl(hw);
+	u8 old_index = clk->parent_index;
+	int ret = 0;
+
+	if (clk->reg_sel[old_index]) {
+		ret = ab8500_sysctrl_clear(clk->reg_sel[old_index],
+					clk->reg_mask[old_index]);
+		if (ret)
+			return ret;
+	}
+
+	if (clk->reg_sel[index]) {
+		ret = ab8500_sysctrl_write(clk->reg_sel[index],
+					clk->reg_mask[index],
+					clk->reg_bits[index]);
+		if (ret) {
+			if (clk->reg_sel[old_index])
+				ab8500_sysctrl_write(clk->reg_sel[old_index],
+						clk->reg_mask[old_index],
+						clk->reg_bits[old_index]);
+			return ret;
+		}
+	}
+	clk->parent_index = index;
+
+	return ret;
+}
+
+static u8 clk_sysctrl_get_parent(struct clk_hw *hw)
+{
+	struct clk_sysctrl *clk = to_clk_sysctrl(hw);
+	return clk->parent_index;
+}
+
+static struct clk_ops clk_sysctrl_gate_ops = {
+	.prepare = clk_sysctrl_prepare,
+	.unprepare = clk_sysctrl_unprepare,
+};
+
+static struct clk_ops clk_sysctrl_gate_fixed_rate_ops = {
+	.prepare = clk_sysctrl_prepare,
+	.unprepare = clk_sysctrl_unprepare,
+	.recalc_rate = clk_sysctrl_recalc_rate,
+};
+
+static struct clk_ops clk_sysctrl_set_parent_ops = {
+	.set_parent = clk_sysctrl_set_parent,
+	.get_parent = clk_sysctrl_get_parent,
+};
+
+static struct clk *clk_reg_sysctrl(struct device *dev,
+				const char *name,
+				const char **parent_names,
+				u8 num_parents,
+				u16 *reg_sel,
+				u8 *reg_mask,
+				u8 *reg_bits,
+				unsigned long rate,
+				unsigned long enable_delay_us,
+				unsigned long flags,
+				struct clk_ops *clk_sysctrl_ops)
+{
+	struct clk_sysctrl *clk;
+	struct clk_init_data clk_sysctrl_init;
+	struct clk *clk_reg;
+	int i;
+
+	if (!dev)
+		return ERR_PTR(-EINVAL);
+
+	if (!name || (num_parents > SYSCTRL_MAX_NUM_PARENTS)) {
+		dev_err(dev, "clk_sysctrl: invalid arguments passed\n");
+		return ERR_PTR(-EINVAL);
+	}
+
+	clk = devm_kzalloc(dev, sizeof(struct clk_sysctrl), GFP_KERNEL);
+	if (!clk) {
+		dev_err(dev, "clk_sysctrl: could not allocate clk\n");
+		return ERR_PTR(-ENOMEM);
+	}
+
+	/* set main clock registers */
+	clk->reg_sel[0] = reg_sel[0];
+	clk->reg_bits[0] = reg_bits[0];
+	clk->reg_mask[0] = reg_mask[0];
+
+	/* handle clocks with more than one parent */
+	for (i = 1; i < num_parents; i++) {
+		clk->reg_sel[i] = reg_sel[i];
+		clk->reg_bits[i] = reg_bits[i];
+		clk->reg_mask[i] = reg_mask[i];
+	}
+
+	clk->parent_index = 0;
+	clk->rate = rate;
+	clk->enable_delay_us = enable_delay_us;
+	clk->dev = dev;
+
+	clk_sysctrl_init.name = name;
+	clk_sysctrl_init.ops = clk_sysctrl_ops;
+	clk_sysctrl_init.flags = flags;
+	clk_sysctrl_init.parent_names = parent_names;
+	clk_sysctrl_init.num_parents = num_parents;
+	clk->hw.init = &clk_sysctrl_init;
+
+	clk_reg = devm_clk_register(clk->dev, &clk->hw);
+	if (IS_ERR(clk_reg))
+		dev_err(dev, "clk_sysctrl: clk_register failed\n");
+
+	return clk_reg;
+}
+
+struct clk *clk_reg_sysctrl_gate(struct device *dev,
+				const char *name,
+				const char *parent_name,
+				u16 reg_sel,
+				u8 reg_mask,
+				u8 reg_bits,
+				unsigned long enable_delay_us,
+				unsigned long flags)
+{
+	const char **parent_names = (parent_name ? &parent_name : NULL);
+	u8 num_parents = (parent_name ? 1 : 0);
+
+	return clk_reg_sysctrl(dev, name, parent_names, num_parents,
+			&reg_sel, &reg_mask, &reg_bits, 0, enable_delay_us,
+			flags, &clk_sysctrl_gate_ops);
+}
+
+struct clk *clk_reg_sysctrl_gate_fixed_rate(struct device *dev,
+					const char *name,
+					const char *parent_name,
+					u16 reg_sel,
+					u8 reg_mask,
+					u8 reg_bits,
+					unsigned long rate,
+					unsigned long enable_delay_us,
+					unsigned long flags)
+{
+	const char **parent_names = (parent_name ? &parent_name : NULL);
+	u8 num_parents = (parent_name ? 1 : 0);
+
+	return clk_reg_sysctrl(dev, name, parent_names, num_parents,
+			&reg_sel, &reg_mask, &reg_bits,
+			rate, enable_delay_us, flags,
+			&clk_sysctrl_gate_fixed_rate_ops);
+}
+
+struct clk *clk_reg_sysctrl_set_parent(struct device *dev,
+				const char *name,
+				const char **parent_names,
+				u8 num_parents,
+				u16 *reg_sel,
+				u8 *reg_mask,
+				u8 *reg_bits,
+				unsigned long flags)
+{
+	return clk_reg_sysctrl(dev, name, parent_names, num_parents,
+			reg_sel, reg_mask, reg_bits, 0, 0, flags,
+			&clk_sysctrl_set_parent_ops);
+}

drivers/clk/ux500/clk.h

@@ -0,0 +1,90 @@
+/*
+ * Clocks for ux500 platforms
+ *
+ * Copyright (C) 2012 ST-Ericsson SA
+ * Author: Ulf Hansson <ulf.hansson@linaro.org>
+ *
+ * License terms: GNU General Public License (GPL) version 2
+ */
+
+#ifndef __UX500_CLK_H
+#define __UX500_CLK_H
+
+#include <linux/clk.h>
+#include <linux/device.h>
+#include <linux/types.h>
+
+struct clk *clk_reg_prcc_pclk(const char *name,
+			      const char *parent_name,
+			      resource_size_t phy_base,
+			      u32 cg_sel,
+			      unsigned long flags);
+
+struct clk *clk_reg_prcc_kclk(const char *name,
+			      const char *parent_name,
+			      resource_size_t phy_base,
+			      u32 cg_sel,
+			      unsigned long flags);
+
+struct clk *clk_reg_prcmu_scalable(const char *name,
+				   const char *parent_name,
+				   u8 cg_sel,
+				   unsigned long rate,
+				   unsigned long flags);
+
+struct clk *clk_reg_prcmu_gate(const char *name,
+			       const char *parent_name,
+			       u8 cg_sel,
+			       unsigned long flags);
+
+struct clk *clk_reg_prcmu_scalable_rate(const char *name,
+					const char *parent_name,
+					u8 cg_sel,
+					unsigned long rate,
+					unsigned long flags);
+
+struct clk *clk_reg_prcmu_rate(const char *name,
+			       const char *parent_name,
+			       u8 cg_sel,
+			       unsigned long flags);
+
+struct clk *clk_reg_prcmu_opp_gate(const char *name,
+				   const char *parent_name,
+				   u8 cg_sel,
+				   unsigned long flags);
+
+struct clk *clk_reg_prcmu_opp_volt_scalable(const char *name,
+					    const char *parent_name,
+					    u8 cg_sel,
+					    unsigned long rate,
+					    unsigned long flags);
+
+struct clk *clk_reg_sysctrl_gate(struct device *dev,
+				 const char *name,
+				 const char *parent_name,
+				 u16 reg_sel,
+				 u8 reg_mask,
+				 u8 reg_bits,
+				 unsigned long enable_delay_us,
+				 unsigned long flags);
+
+struct clk *clk_reg_sysctrl_gate_fixed_rate(struct device *dev,
+					    const char *name,
+					    const char *parent_name,
+					    u16 reg_sel,
+					    u8 reg_mask,
+					    u8 reg_bits,
+					    unsigned long rate,
+					    unsigned long enable_delay_us,
+					    unsigned long flags);
+
+struct clk *clk_reg_sysctrl_set_parent(struct device *dev,
+				       const char *name,
+				       const char **parent_names,
+				       u8 num_parents,
+				       u16 *reg_sel,
+				       u8 *reg_mask,
+				       u8 *reg_bits,
+				       unsigned long flags);
+
+#endif /* __UX500_CLK_H */

drivers/clk/ux500/u8500_clk.c

@@ -0,0 +1,525 @@
+/*
+ * Clock definitions for u8500 platform.
+ *
+ * Copyright (C) 2012 ST-Ericsson SA
+ * Author: Ulf Hansson <ulf.hansson@linaro.org>
+ *
+ * License terms: GNU General Public License (GPL) version 2
+ */
+
+#include <linux/clk.h>
+#include <linux/clkdev.h>
+#include <linux/clk-provider.h>
+#include <linux/mfd/dbx500-prcmu.h>
+#include <linux/platform_data/clk-ux500.h>
+#include "clk.h"
+
+void u8500_clk_init(u32 clkrst1_base, u32 clkrst2_base, u32 clkrst3_base,
+		    u32 clkrst5_base, u32 clkrst6_base)
+{
+	struct prcmu_fw_version *fw_version;
+	const char *sgaclk_parent = NULL;
+	struct clk *clk;
+
+	/* Clock sources */
+	clk = clk_reg_prcmu_gate("soc0_pll", NULL, PRCMU_PLLSOC0,
+				CLK_IS_ROOT|CLK_IGNORE_UNUSED);
+	clk_register_clkdev(clk, "soc0_pll", NULL);
+
+	clk = clk_reg_prcmu_gate("soc1_pll", NULL, PRCMU_PLLSOC1,
+				CLK_IS_ROOT|CLK_IGNORE_UNUSED);
+	clk_register_clkdev(clk, "soc1_pll", NULL);
+
+	clk = clk_reg_prcmu_gate("ddr_pll", NULL, PRCMU_PLLDDR,
+				CLK_IS_ROOT|CLK_IGNORE_UNUSED);
+	clk_register_clkdev(clk, "ddr_pll", NULL);
+
+	/* FIXME: Add sys, ulp and int clocks here. */
+
+	clk = clk_register_fixed_rate(NULL, "rtc32k", "NULL",
+				CLK_IS_ROOT|CLK_IGNORE_UNUSED,
+				32768);
+	clk_register_clkdev(clk, "clk32k", NULL);
+	clk_register_clkdev(clk, "apb_pclk", "rtc-pl031");
+
+	/* PRCMU clocks */
+	fw_version = prcmu_get_fw_version();
+	if (fw_version != NULL) {
+		switch (fw_version->project) {
+		case PRCMU_FW_PROJECT_U8500_C2:
+		case PRCMU_FW_PROJECT_U8520:
+		case PRCMU_FW_PROJECT_U8420:
+			sgaclk_parent = "soc0_pll";
+			break;
+		default:
+			break;
+		}
+	}
+
+	if (sgaclk_parent)
+		clk = clk_reg_prcmu_gate("sgclk", sgaclk_parent,
+					PRCMU_SGACLK, 0);
+	else
+		clk = clk_reg_prcmu_gate("sgclk", NULL,
+					PRCMU_SGACLK, CLK_IS_ROOT);
+	clk_register_clkdev(clk, NULL, "mali");
+
+	clk = clk_reg_prcmu_gate("uartclk", NULL, PRCMU_UARTCLK, CLK_IS_ROOT);
+	clk_register_clkdev(clk, NULL, "UART");
+
+	clk = clk_reg_prcmu_gate("msp02clk", NULL, PRCMU_MSP02CLK, CLK_IS_ROOT);
+	clk_register_clkdev(clk, NULL, "MSP02");
+
+	clk = clk_reg_prcmu_gate("msp1clk", NULL, PRCMU_MSP1CLK, CLK_IS_ROOT);
+	clk_register_clkdev(clk, NULL, "MSP1");
+
+	clk = clk_reg_prcmu_gate("i2cclk", NULL, PRCMU_I2CCLK, CLK_IS_ROOT);
+	clk_register_clkdev(clk, NULL, "I2C");
+
+	clk = clk_reg_prcmu_gate("slimclk", NULL, PRCMU_SLIMCLK, CLK_IS_ROOT);
+	clk_register_clkdev(clk, NULL, "slim");
+
+	clk = clk_reg_prcmu_gate("per1clk", NULL, PRCMU_PER1CLK, CLK_IS_ROOT);
+	clk_register_clkdev(clk, NULL, "PERIPH1");
+
+	clk = clk_reg_prcmu_gate("per2clk", NULL, PRCMU_PER2CLK, CLK_IS_ROOT);
+	clk_register_clkdev(clk, NULL, "PERIPH2");
+
+	clk = clk_reg_prcmu_gate("per3clk", NULL, PRCMU_PER3CLK, CLK_IS_ROOT);
+	clk_register_clkdev(clk, NULL, "PERIPH3");
+
+	clk = clk_reg_prcmu_gate("per5clk", NULL, PRCMU_PER5CLK, CLK_IS_ROOT);
+	clk_register_clkdev(clk, NULL, "PERIPH5");
+
+	clk = clk_reg_prcmu_gate("per6clk", NULL, PRCMU_PER6CLK, CLK_IS_ROOT);
+	clk_register_clkdev(clk, NULL, "PERIPH6");
+
+	clk = clk_reg_prcmu_gate("per7clk", NULL, PRCMU_PER7CLK, CLK_IS_ROOT);
+	clk_register_clkdev(clk, NULL, "PERIPH7");
+
+	clk = clk_reg_prcmu_scalable("lcdclk", NULL, PRCMU_LCDCLK, 0,
+				CLK_IS_ROOT|CLK_SET_RATE_GATE);
+	clk_register_clkdev(clk, NULL, "lcd");
+	clk_register_clkdev(clk, "lcd", "mcde");
+
+	clk = clk_reg_prcmu_opp_gate("bmlclk", NULL, PRCMU_BMLCLK, CLK_IS_ROOT);
+	clk_register_clkdev(clk, NULL, "bml");
+
+	clk = clk_reg_prcmu_scalable("hsitxclk", NULL, PRCMU_HSITXCLK, 0,
+				CLK_IS_ROOT|CLK_SET_RATE_GATE);
+
+	clk = clk_reg_prcmu_scalable("hsirxclk", NULL, PRCMU_HSIRXCLK, 0,
+				CLK_IS_ROOT|CLK_SET_RATE_GATE);
+
+	clk = clk_reg_prcmu_scalable("hdmiclk", NULL, PRCMU_HDMICLK, 0,
+				CLK_IS_ROOT|CLK_SET_RATE_GATE);
+	clk_register_clkdev(clk, NULL, "hdmi");
+	clk_register_clkdev(clk, "hdmi", "mcde");
+
+	clk = clk_reg_prcmu_gate("apeatclk", NULL, PRCMU_APEATCLK, CLK_IS_ROOT);
+	clk_register_clkdev(clk, NULL, "apeat");
+
+	clk = clk_reg_prcmu_gate("apetraceclk", NULL, PRCMU_APETRACECLK,
+				CLK_IS_ROOT);
+	clk_register_clkdev(clk, NULL, "apetrace");
+
+	clk = clk_reg_prcmu_gate("mcdeclk", NULL, PRCMU_MCDECLK, CLK_IS_ROOT);
+	clk_register_clkdev(clk, NULL, "mcde");
+	clk_register_clkdev(clk, "mcde", "mcde");
+	clk_register_clkdev(clk, "dsisys", "dsilink.0");
+	clk_register_clkdev(clk, "dsisys", "dsilink.1");
+	clk_register_clkdev(clk, "dsisys", "dsilink.2");
+
+	clk = clk_reg_prcmu_opp_gate("ipi2cclk", NULL, PRCMU_IPI2CCLK,
+				CLK_IS_ROOT);
+	clk_register_clkdev(clk, NULL, "ipi2");
+
+	clk = clk_reg_prcmu_gate("dsialtclk", NULL, PRCMU_DSIALTCLK,
+				CLK_IS_ROOT);
+	clk_register_clkdev(clk, NULL, "dsialt");
+
+	clk = clk_reg_prcmu_gate("dmaclk", NULL, PRCMU_DMACLK, CLK_IS_ROOT);
+	clk_register_clkdev(clk, NULL, "dma40.0");
+
+	clk = clk_reg_prcmu_gate("b2r2clk", NULL, PRCMU_B2R2CLK, CLK_IS_ROOT);
+	clk_register_clkdev(clk, NULL, "b2r2");
+	clk_register_clkdev(clk, NULL, "b2r2_core");
+	clk_register_clkdev(clk, NULL, "U8500-B2R2.0");
+
+	clk = clk_reg_prcmu_scalable("tvclk", NULL, PRCMU_TVCLK, 0,
+				CLK_IS_ROOT|CLK_SET_RATE_GATE);
+	clk_register_clkdev(clk, NULL, "tv");
+	clk_register_clkdev(clk, "tv", "mcde");
+
+	clk = clk_reg_prcmu_gate("sspclk", NULL, PRCMU_SSPCLK, CLK_IS_ROOT);
+	clk_register_clkdev(clk, NULL, "SSP");
+
+	clk = clk_reg_prcmu_gate("rngclk", NULL, PRCMU_RNGCLK, CLK_IS_ROOT);
+	clk_register_clkdev(clk, NULL, "rngclk");
+
+	clk = clk_reg_prcmu_gate("uiccclk", NULL, PRCMU_UICCCLK, CLK_IS_ROOT);
+	clk_register_clkdev(clk, NULL, "uicc");
+
+	clk = clk_reg_prcmu_gate("timclk", NULL, PRCMU_TIMCLK, CLK_IS_ROOT);
+	clk_register_clkdev(clk, NULL, "mtu0");
+	clk_register_clkdev(clk, NULL, "mtu1");
+
+	clk = clk_reg_prcmu_opp_volt_scalable("sdmmcclk", NULL, PRCMU_SDMMCCLK,
+					100000000,
+					CLK_IS_ROOT|CLK_SET_RATE_GATE);
+	clk_register_clkdev(clk, NULL, "sdmmc");
+
+	clk = clk_reg_prcmu_scalable("dsi_pll", "hdmiclk",
+				PRCMU_PLLDSI, 0, CLK_SET_RATE_GATE);
+	clk_register_clkdev(clk, "dsihs2", "mcde");
+	clk_register_clkdev(clk, "dsihs2", "dsilink.2");
+
+
+	clk = clk_reg_prcmu_scalable("dsi0clk", "dsi_pll",
+				PRCMU_DSI0CLK, 0, CLK_SET_RATE_GATE);
+	clk_register_clkdev(clk, "dsihs0", "mcde");
+	clk_register_clkdev(clk, "dsihs0", "dsilink.0");
+
+	clk = clk_reg_prcmu_scalable("dsi1clk", "dsi_pll",
+				PRCMU_DSI1CLK, 0, CLK_SET_RATE_GATE);
+	clk_register_clkdev(clk, "dsihs1", "mcde");
+	clk_register_clkdev(clk, "dsihs1", "dsilink.1");
+
+	clk = clk_reg_prcmu_scalable("dsi0escclk", "tvclk",
+				PRCMU_DSI0ESCCLK, 0, CLK_SET_RATE_GATE);
+	clk_register_clkdev(clk, "dsilp0", "dsilink.0");
+	clk_register_clkdev(clk, "dsilp0", "mcde");
+
+	clk = clk_reg_prcmu_scalable("dsi1escclk", "tvclk",
+				PRCMU_DSI1ESCCLK, 0, CLK_SET_RATE_GATE);
+	clk_register_clkdev(clk, "dsilp1", "dsilink.1");
+	clk_register_clkdev(clk, "dsilp1", "mcde");
+
+	clk = clk_reg_prcmu_scalable("dsi2escclk", "tvclk",
+				PRCMU_DSI2ESCCLK, 0, CLK_SET_RATE_GATE);
+	clk_register_clkdev(clk, "dsilp2", "dsilink.2");
+	clk_register_clkdev(clk, "dsilp2", "mcde");
+
+	clk = clk_reg_prcmu_scalable_rate("armss", NULL,
+				PRCMU_ARMSS, 0, CLK_IS_ROOT|CLK_IGNORE_UNUSED);
+	clk_register_clkdev(clk, "armss", NULL);
+
+	clk = clk_register_fixed_factor(NULL, "smp_twd", "armss",
+				CLK_IGNORE_UNUSED, 1, 2);
+	clk_register_clkdev(clk, NULL, "smp_twd");
+
+	/*
+	 * FIXME: Add special handled PRCMU clocks here:
+	 * 1. clkout0yuv, use PRCMU as parent + need regulator + pinctrl.
+	 * 2. ab9540_clkout1yuv, see clkout0yuv
+	 */
+
+	/* PRCC P-clocks */
+	clk = clk_reg_prcc_pclk("p1_pclk0", "per1clk", clkrst1_base,
+				BIT(0), 0);
+	clk_register_clkdev(clk, "apb_pclk", "uart0");
+
+	clk = clk_reg_prcc_pclk("p1_pclk1", "per1clk", clkrst1_base,
+				BIT(1), 0);
+	clk_register_clkdev(clk, "apb_pclk", "uart1");
+
+	clk = clk_reg_prcc_pclk("p1_pclk2", "per1clk", clkrst1_base,
+				BIT(2), 0);
+	clk_register_clkdev(clk, "apb_pclk", "nmk-i2c.1");
+
+	clk = clk_reg_prcc_pclk("p1_pclk3", "per1clk", clkrst1_base,
+				BIT(3), 0);
+	clk_register_clkdev(clk, "apb_pclk", "msp0");
+	clk_register_clkdev(clk, "apb_pclk", "ux500-msp-i2s.0");
+
+	clk = clk_reg_prcc_pclk("p1_pclk4", "per1clk", clkrst1_base,
+				BIT(4), 0);
+	clk_register_clkdev(clk, "apb_pclk", "msp1");
+	clk_register_clkdev(clk, "apb_pclk", "ux500-msp-i2s.1");
+
+	clk = clk_reg_prcc_pclk("p1_pclk5", "per1clk", clkrst1_base,
+				BIT(5), 0);
+	clk_register_clkdev(clk, "apb_pclk", "sdi0");
+
+	clk = clk_reg_prcc_pclk("p1_pclk6", "per1clk", clkrst1_base,
+				BIT(6), 0);
+	clk_register_clkdev(clk, "apb_pclk", "nmk-i2c.2");
+
+	clk = clk_reg_prcc_pclk("p1_pclk7", "per1clk", clkrst1_base,
+				BIT(7), 0);
+	clk_register_clkdev(clk, NULL, "spi3");
+
+	clk = clk_reg_prcc_pclk("p1_pclk8", "per1clk", clkrst1_base,
+				BIT(8), 0);
+	clk_register_clkdev(clk, "apb_pclk", "slimbus0");
+
+	clk = clk_reg_prcc_pclk("p1_pclk9", "per1clk", clkrst1_base,
+				BIT(9), 0);
+	clk_register_clkdev(clk, NULL, "gpio.0");
+	clk_register_clkdev(clk, NULL, "gpio.1");
+	clk_register_clkdev(clk, NULL, "gpioblock0");
+
+	clk = clk_reg_prcc_pclk("p1_pclk10", "per1clk", clkrst1_base,
+				BIT(10), 0);
+	clk_register_clkdev(clk, "apb_pclk", "nmk-i2c.4");
+
+	clk = clk_reg_prcc_pclk("p1_pclk11", "per1clk", clkrst1_base,
+				BIT(11), 0);
+	clk_register_clkdev(clk, "apb_pclk", "msp3");
+	clk_register_clkdev(clk, "apb_pclk", "ux500-msp-i2s.3");
+
+	clk = clk_reg_prcc_pclk("p2_pclk0", "per2clk", clkrst2_base,
+				BIT(0), 0);
+	clk_register_clkdev(clk, "apb_pclk", "nmk-i2c.3");
+
+	clk = clk_reg_prcc_pclk("p2_pclk1", "per2clk", clkrst2_base,
+				BIT(1), 0);
+	clk_register_clkdev(clk, NULL, "spi2");
+
+	clk = clk_reg_prcc_pclk("p2_pclk2", "per2clk", clkrst2_base,
+				BIT(2), 0);
+	clk_register_clkdev(clk, NULL, "spi1");
+
+	clk = clk_reg_prcc_pclk("p2_pclk3", "per2clk", clkrst2_base,
+				BIT(3), 0);
+	clk_register_clkdev(clk, NULL, "pwl");
+
+	clk = clk_reg_prcc_pclk("p2_pclk4", "per2clk", clkrst2_base,
+				BIT(4), 0);
+	clk_register_clkdev(clk, "apb_pclk", "sdi4");
+
+	clk = clk_reg_prcc_pclk("p2_pclk5", "per2clk", clkrst2_base,
+				BIT(5), 0);
+	clk_register_clkdev(clk, "apb_pclk", "msp2");
+	clk_register_clkdev(clk, "apb_pclk", "ux500-msp-i2s.2");
+
+	clk = clk_reg_prcc_pclk("p2_pclk6", "per2clk", clkrst2_base,
+				BIT(6), 0);
+	clk_register_clkdev(clk, "apb_pclk", "sdi1");
+
+	clk = clk_reg_prcc_pclk("p2_pclk7", "per2clk", clkrst2_base,
+				BIT(7), 0);
+	clk_register_clkdev(clk, "apb_pclk", "sdi3");
+
+	clk = clk_reg_prcc_pclk("p2_pclk8", "per2clk", clkrst2_base,
+				BIT(8), 0);
+	clk_register_clkdev(clk, NULL, "spi0");
+
+	clk = clk_reg_prcc_pclk("p2_pclk9", "per2clk", clkrst2_base,
+				BIT(9), 0);
+	clk_register_clkdev(clk, "hsir_hclk", "ste_hsi.0");
+
+	clk = clk_reg_prcc_pclk("p2_pclk10", "per2clk", clkrst2_base,
+				BIT(10), 0);
+	clk_register_clkdev(clk, "hsit_hclk", "ste_hsi.0");
+
+	clk = clk_reg_prcc_pclk("p2_pclk11", "per2clk", clkrst2_base,
+				BIT(11), 0);
+	clk_register_clkdev(clk, NULL, "gpio.6");
+	clk_register_clkdev(clk, NULL, "gpio.7");
+	clk_register_clkdev(clk, NULL, "gpioblock1");
+
+	clk = clk_reg_prcc_pclk("p2_pclk12", "per2clk", clkrst2_base,
+				BIT(12), 0);
+
+	clk = clk_reg_prcc_pclk("p3_pclk0", "per3clk", clkrst3_base,
+				BIT(0), 0);
+	clk_register_clkdev(clk, "fsmc", NULL);
+	clk_register_clkdev(clk, NULL, "smsc911x.0");
+
+	clk = clk_reg_prcc_pclk("p3_pclk1", "per3clk", clkrst3_base,
+				BIT(1), 0);
+	clk_register_clkdev(clk, "apb_pclk", "ssp0");
+
+	clk = clk_reg_prcc_pclk("p3_pclk2", "per3clk", clkrst3_base,
+				BIT(2), 0);
+	clk_register_clkdev(clk, "apb_pclk", "ssp1");
+
+	clk = clk_reg_prcc_pclk("p3_pclk3", "per3clk", clkrst3_base,
+				BIT(3), 0);
+	clk_register_clkdev(clk, "apb_pclk", "nmk-i2c.0");
+
+	clk = clk_reg_prcc_pclk("p3_pclk4", "per3clk", clkrst3_base,
+				BIT(4), 0);
+	clk_register_clkdev(clk, "apb_pclk", "sdi2");
+
+	clk = clk_reg_prcc_pclk("p3_pclk5", "per3clk", clkrst3_base,
+				BIT(5), 0);
+	clk_register_clkdev(clk, "apb_pclk", "ske");
+	clk_register_clkdev(clk, "apb_pclk", "nmk-ske-keypad");
+
+	clk = clk_reg_prcc_pclk("p3_pclk6", "per3clk", clkrst3_base,
+				BIT(6), 0);
+	clk_register_clkdev(clk, "apb_pclk", "uart2");
+
+	clk = clk_reg_prcc_pclk("p3_pclk7", "per3clk", clkrst3_base,
+				BIT(7), 0);
+	clk_register_clkdev(clk, "apb_pclk", "sdi5");
+
+	clk = clk_reg_prcc_pclk("p3_pclk8", "per3clk", clkrst3_base,
+				BIT(8), 0);
+	clk_register_clkdev(clk, NULL, "gpio.2");
+	clk_register_clkdev(clk, NULL, "gpio.3");
+	clk_register_clkdev(clk, NULL, "gpio.4");
+	clk_register_clkdev(clk, NULL, "gpio.5");
+	clk_register_clkdev(clk, NULL, "gpioblock2");
+
+	clk = clk_reg_prcc_pclk("p5_pclk0", "per5clk", clkrst5_base,
+				BIT(0), 0);
+	clk_register_clkdev(clk, "usb", "musb-ux500.0");
+
+	clk = clk_reg_prcc_pclk("p5_pclk1", "per5clk", clkrst5_base,
+				BIT(1), 0);
+	clk_register_clkdev(clk, NULL, "gpio.8");
+	clk_register_clkdev(clk, NULL, "gpioblock3");
+
+	clk = clk_reg_prcc_pclk("p6_pclk0", "per6clk", clkrst6_base,
+				BIT(0), 0);
+	clk_register_clkdev(clk, "apb_pclk", "rng");
+
+	clk = clk_reg_prcc_pclk("p6_pclk1", "per6clk", clkrst6_base,
+				BIT(1), 0);
+	clk_register_clkdev(clk, NULL, "cryp0");
+	clk_register_clkdev(clk, NULL, "cryp1");
+
+	clk = clk_reg_prcc_pclk("p6_pclk2", "per6clk", clkrst6_base,
+				BIT(2), 0);
+	clk_register_clkdev(clk, NULL, "hash0");
+
+	clk = clk_reg_prcc_pclk("p6_pclk3", "per6clk", clkrst6_base,
+				BIT(3), 0);
+	clk_register_clkdev(clk, NULL, "pka");
+
+	clk = clk_reg_prcc_pclk("p6_pclk4", "per6clk", clkrst6_base,
+				BIT(4), 0);
+	clk_register_clkdev(clk, NULL, "hash1");
+
+	clk = clk_reg_prcc_pclk("p6_pclk5", "per6clk", clkrst6_base,
+				BIT(5), 0);
+	clk_register_clkdev(clk, NULL, "cfgreg");
+
+	clk = clk_reg_prcc_pclk("p6_pclk6", "per6clk", clkrst6_base,
+				BIT(6), 0);
+	clk_register_clkdev(clk, "apb_pclk", "mtu0");
+
+	clk = clk_reg_prcc_pclk("p6_pclk7", "per6clk", clkrst6_base,
+				BIT(7), 0);
+	clk_register_clkdev(clk, "apb_pclk", "mtu1");
+
+	/* PRCC K-clocks
+	 *
+	 * FIXME: Some drivers requires PERPIH[n| to be automatically enabled
+	 * by enabling just the K-clock, even if it is not a valid parent to
+	 * the K-clock. Until drivers get fixed we might need some kind of
+	 * "parent muxed join".
+	 */
+
+	/* Periph1 */
+	clk = clk_reg_prcc_kclk("p1_uart0_kclk", "uartclk",
+			clkrst1_base, BIT(0), CLK_SET_RATE_GATE);
+	clk_register_clkdev(clk, NULL, "uart0");
+
+	clk = clk_reg_prcc_kclk("p1_uart1_kclk", "uartclk",
+			clkrst1_base, BIT(1), CLK_SET_RATE_GATE);
+	clk_register_clkdev(clk, NULL, "uart1");
+
+	clk = clk_reg_prcc_kclk("p1_i2c1_kclk", "i2cclk",
+			clkrst1_base, BIT(2), CLK_SET_RATE_GATE);
+	clk_register_clkdev(clk, NULL, "nmk-i2c.1");
+
+	clk = clk_reg_prcc_kclk("p1_msp0_kclk", "msp02clk",
+			clkrst1_base, BIT(3), CLK_SET_RATE_GATE);
+	clk_register_clkdev(clk, NULL, "msp0");
+	clk_register_clkdev(clk, NULL, "ux500-msp-i2s.0");
+
+	clk = clk_reg_prcc_kclk("p1_msp1_kclk", "msp1clk",
+			clkrst1_base, BIT(4), CLK_SET_RATE_GATE);
+	clk_register_clkdev(clk, NULL, "msp1");
+	clk_register_clkdev(clk, NULL, "ux500-msp-i2s.1");
+
+	clk = clk_reg_prcc_kclk("p1_sdi0_kclk", "sdmmcclk",
+			clkrst1_base, BIT(5), CLK_SET_RATE_GATE);
+	clk_register_clkdev(clk, NULL, "sdi0");
+
+	clk = clk_reg_prcc_kclk("p1_i2c2_kclk", "i2cclk",
+			clkrst1_base, BIT(6), CLK_SET_RATE_GATE);
+	clk_register_clkdev(clk, NULL, "nmk-i2c.2");
+
+	clk = clk_reg_prcc_kclk("p1_slimbus0_kclk", "slimclk",
+			clkrst1_base, BIT(8), CLK_SET_RATE_GATE);
+	clk_register_clkdev(clk, NULL, "slimbus0");
+
+	clk = clk_reg_prcc_kclk("p1_i2c4_kclk", "i2cclk",
+			clkrst1_base, BIT(9), CLK_SET_RATE_GATE);
+	clk_register_clkdev(clk, NULL, "nmk-i2c.4");
+
+	clk = clk_reg_prcc_kclk("p1_msp3_kclk", "msp1clk",
+			clkrst1_base, BIT(10), CLK_SET_RATE_GATE);
+	clk_register_clkdev(clk, NULL, "msp3");
+	clk_register_clkdev(clk, NULL, "ux500-msp-i2s.3");
+
+	/* Periph2 */
+	clk = clk_reg_prcc_kclk("p2_i2c3_kclk", "i2cclk",
+			clkrst2_base, BIT(0), CLK_SET_RATE_GATE);
+	clk_register_clkdev(clk, NULL, "nmk-i2c.3");
+
+	clk = clk_reg_prcc_kclk("p2_sdi4_kclk", "sdmmcclk",
+			clkrst2_base, BIT(2), CLK_SET_RATE_GATE);
+	clk_register_clkdev(clk, NULL, "sdi4");
+
+	clk = clk_reg_prcc_kclk("p2_msp2_kclk", "msp02clk",
+			clkrst2_base, BIT(3), CLK_SET_RATE_GATE);
+	clk_register_clkdev(clk, NULL, "msp2");
+	clk_register_clkdev(clk, NULL, "ux500-msp-i2s.2");
+
+	clk = clk_reg_prcc_kclk("p2_sdi1_kclk", "sdmmcclk",
+			clkrst2_base, BIT(4), CLK_SET_RATE_GATE);
+	clk_register_clkdev(clk, NULL, "sdi1");
+
+	clk = clk_reg_prcc_kclk("p2_sdi3_kclk", "sdmmcclk",
+			clkrst2_base, BIT(5), CLK_SET_RATE_GATE);
+	clk_register_clkdev(clk, NULL, "sdi3");
+
+	/* Note that rate is received from parent. */
+	clk = clk_reg_prcc_kclk("p2_ssirx_kclk", "hsirxclk",
+			clkrst2_base, BIT(6),
+			CLK_SET_RATE_GATE|CLK_SET_RATE_PARENT);
+	clk = clk_reg_prcc_kclk("p2_ssitx_kclk", "hsitxclk",
+			clkrst2_base, BIT(7),
+			CLK_SET_RATE_GATE|CLK_SET_RATE_PARENT);
+
+	/* Periph3 */
+	clk = clk_reg_prcc_kclk("p3_ssp0_kclk", "sspclk",
+			clkrst3_base, BIT(1), CLK_SET_RATE_GATE);
+	clk_register_clkdev(clk, NULL, "ssp0");
+
+	clk = clk_reg_prcc_kclk("p3_ssp1_kclk", "sspclk",
+			clkrst3_base, BIT(2), CLK_SET_RATE_GATE);
+	clk_register_clkdev(clk, NULL, "ssp1");
+
+	clk = clk_reg_prcc_kclk("p3_i2c0_kclk", "i2cclk",
+			clkrst3_base, BIT(3), CLK_SET_RATE_GATE);
+	clk_register_clkdev(clk, NULL, "nmk-i2c.0");
+
+	clk = clk_reg_prcc_kclk("p3_sdi2_kclk", "sdmmcclk",
+			clkrst3_base, BIT(4), CLK_SET_RATE_GATE);
+	clk_register_clkdev(clk, NULL, "sdi2");
+
+	clk = clk_reg_prcc_kclk("p3_ske_kclk", "rtc32k",
+			clkrst3_base, BIT(5), CLK_SET_RATE_GATE);
+	clk_register_clkdev(clk, NULL, "ske");
+	clk_register_clkdev(clk, NULL, "nmk-ske-keypad");
+
+	clk = clk_reg_prcc_kclk("p3_uart2_kclk", "uartclk",
+			clkrst3_base, BIT(6), CLK_SET_RATE_GATE);
+	clk_register_clkdev(clk, NULL, "uart2");
+
+	clk = clk_reg_prcc_kclk("p3_sdi5_kclk", "sdmmcclk",
+			clkrst3_base, BIT(7), CLK_SET_RATE_GATE);
+	clk_register_clkdev(clk, NULL, "sdi5");
+
+	/* Periph6 */
+	clk = clk_reg_prcc_kclk("p3_rng_kclk", "rngclk",
+			clkrst6_base, BIT(0), CLK_SET_RATE_GATE);
+	clk_register_clkdev(clk, NULL, "rng");
+}

drivers/clk/ux500/u8540_clk.c

@@ -0,0 +1,21 @@
+/*
+ * Clock definitions for u8540 platform.
+ *
+ * Copyright (C) 2012 ST-Ericsson SA
+ * Author: Ulf Hansson <ulf.hansson@linaro.org>
+ *
+ * License terms: GNU General Public License (GPL) version 2
+ */
+
+#include <linux/clk.h>
+#include <linux/clkdev.h>
+#include <linux/clk-provider.h>
+#include <linux/mfd/dbx500-prcmu.h>
+#include <linux/platform_data/clk-ux500.h>
+
+#include "clk.h"
+
+void u8540_clk_init(void)
+{
+	/* register clocks here */
+}

drivers/clk/ux500/u9540_clk.c

@@ -0,0 +1,21 @@
+/*
+ * Clock definitions for u9540 platform.
+ *
+ * Copyright (C) 2012 ST-Ericsson SA
+ * Author: Ulf Hansson <ulf.hansson@linaro.org>
+ *
+ * License terms: GNU General Public License (GPL) version 2
+ */
+
+#include <linux/clk.h>
+#include <linux/clkdev.h>
+#include <linux/clk-provider.h>
+#include <linux/mfd/dbx500-prcmu.h>
+#include <linux/platform_data/clk-ux500.h>
+
+#include "clk.h"
+
+void u9540_clk_init(void)
+{
+	/* register clocks here */
+}