Merge tag 'arm-soc-v5.12' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc

Pull ARM SoC updates from Arnd Bergmann:
 "This is mostly 32-bit code for SoC platforms, and looks smaller than
  any such branch I remember from previous kernels, as most of this is
  now handled in other subsystems for modern platforms:

   - Minor bugfixes and Kconfig updates for Tegra, Broadcom, i.MX,
     Renesas, and Samsung

   - Updates to the MAINTAINERS listing for Actions, OMAP, and Samsung

   - Samsung SoC driver updates to make them loadable modules"

* tag 'arm-soc-v5.12' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc:
  MAINTAINERS: arm: samsung: include S3C headers in platform entry
  MAINTAINERS: Add linux-actions ML for Actions Semi Arch
  ARM: s3c: irq-s3c24xx: staticize local functions
  ARM: s3c: irq-s3c24xx: include headers for missing declarations
  ARM: s3c: fix fiq for clang IAS
  ARM: imx: Remove unused IMX_GPIO_NR() macro
  soc: renesas: rcar-sysc: Mark device node OF_POPULATED after init
  ARM: OMAP2+: fix spellint typo
  MAINTAINERS: Update address for OMAP GPMC driver
  soc: renesas: rcar-sysc: Use readl_poll_timeout_atomic()
  ARM: bcm: Select BRCMSTB_L2_IRQ for bcm2835
  ARM: brcmstb: Add debug UART entry for 72116
  ARM: tegra: Don't enable unused PLLs on resume from suspend
  soc: samsung: pm_domains: Convert to regular platform driver
  soc: samsung: exynos-chipid: correct helpers __init annotation
  ARM: mach-imx: imx6ul: Print SOC revision on boot
  ARM: imx: mach-imx6ul: remove 14x14 EVK specific PHY fixup
  soc: samsung: exynos-chipid: convert to driver and merge exynos-asv
  soc: samsung: exynos-asv: handle reading revision register error
  soc: samsung: exynos-asv: don't defer early on not-supported SoCs

7 files changed, 142 insertions, 137 deletions

diff --git a/drivers/soc/renesas/rcar-sysc.c b/drivers/soc/renesas/rcar-sysc.c
index 9b235fc90027..53387a72ca00 100644
--- a/drivers/soc/renesas/rcar-sysc.c
+++ b/drivers/soc/renesas/rcar-sysc.c
@@ -15,6 +15,7 @@
 #include <linux/slab.h>
 #include <linux/spinlock.h>
 #include <linux/io.h>
+#include <linux/iopoll.h>
 #include <linux/soc/renesas/rcar-sysc.h>
 
 #include "rcar-sysc.h"
@@ -44,13 +45,13 @@
 #define PWRER_OFFS		0x14	/* Power Shutoff/Resume Error */
 
 
-#define SYSCSR_RETRIES		100
+#define SYSCSR_TIMEOUT		100
 #define SYSCSR_DELAY_US		1
 
 #define PWRER_RETRIES		100
 #define PWRER_DELAY_US		1
 
-#define SYSCISR_RETRIES		1000
+#define SYSCISR_TIMEOUT		1000
 #define SYSCISR_DELAY_US	1
 
 #define RCAR_PD_ALWAYS_ON	32	/* Always-on power area */
@@ -68,7 +69,8 @@ static u32 rcar_sysc_extmask_offs, rcar_sysc_extmask_val;
 static int rcar_sysc_pwr_on_off(const struct rcar_sysc_ch *sysc_ch, bool on)
 {
 	unsigned int sr_bit, reg_offs;
-	int k;
+	u32 val;
+	int ret;
 
 	if (on) {
 		sr_bit = SYSCSR_PONENB;
@@ -79,13 +81,10 @@ static int rcar_sysc_pwr_on_off(const struct rcar_sysc_ch *sysc_ch, bool on)
 	}
 
 	/* Wait until SYSC is ready to accept a power request */
-	for (k = 0; k < SYSCSR_RETRIES; k++) {
-		if (ioread32(rcar_sysc_base + SYSCSR) & BIT(sr_bit))
-			break;
-		udelay(SYSCSR_DELAY_US);
-	}
-
-	if (k == SYSCSR_RETRIES)
+	ret = readl_poll_timeout_atomic(rcar_sysc_base + SYSCSR, val,
+					val & BIT(sr_bit), SYSCSR_DELAY_US,
+					SYSCSR_TIMEOUT);
+	if (ret)
 		return -EAGAIN;
 
 	/* Submit power shutoff or power resume request */
@@ -99,10 +98,9 @@ static int rcar_sysc_power(const struct rcar_sysc_ch *sysc_ch, bool on)
 {
 	unsigned int isr_mask = BIT(sysc_ch->isr_bit);
 	unsigned int chan_mask = BIT(sysc_ch->chan_bit);
-	unsigned int status;
+	unsigned int status, k;
 	unsigned long flags;
-	int ret = 0;
-	int k;
+	int ret;
 
 	spin_lock_irqsave(&rcar_sysc_lock, flags);
 
@@ -145,13 +143,10 @@ static int rcar_sysc_power(const struct rcar_sysc_ch *sysc_ch, bool on)
 	}
 
 	/* Wait until the power shutoff or resume request has completed * */
-	for (k = 0; k < SYSCISR_RETRIES; k++) {
-		if (ioread32(rcar_sysc_base + SYSCISR) & isr_mask)
-			break;
-		udelay(SYSCISR_DELAY_US);
-	}
-
-	if (k == SYSCISR_RETRIES)
+	ret = readl_poll_timeout_atomic(rcar_sysc_base + SYSCISR, status,
+					status & isr_mask, SYSCISR_DELAY_US,
+					SYSCISR_TIMEOUT);
+	if (ret)
 		ret = -EIO;
 
 	iowrite32(isr_mask, rcar_sysc_base + SYSCISCR);
@@ -439,6 +434,8 @@ static int __init rcar_sysc_pd_init(void)
 	}
 
 	error = of_genpd_add_provider_onecell(np, &domains->onecell_data);
+	if (!error)
+		of_node_set_flag(np, OF_POPULATED);
 
 out_put:
 	of_node_put(np);
diff --git a/drivers/soc/samsung/Kconfig b/drivers/soc/samsung/Kconfig
index fc7f48a92288..5745d7e5908e 100644
--- a/drivers/soc/samsung/Kconfig
+++ b/drivers/soc/samsung/Kconfig
@@ -7,21 +7,19 @@ menuconfig SOC_SAMSUNG
 
 if SOC_SAMSUNG
 
-config EXYNOS_ASV
-	bool "Exynos Adaptive Supply Voltage support" if COMPILE_TEST
-	depends on (ARCH_EXYNOS && EXYNOS_CHIPID) || COMPILE_TEST
-	select EXYNOS_ASV_ARM if ARM && ARCH_EXYNOS
-
 # There is no need to enable these drivers for ARMv8
 config EXYNOS_ASV_ARM
 	bool "Exynos ASV ARMv7-specific driver extensions" if COMPILE_TEST
-	depends on EXYNOS_ASV
+	depends on EXYNOS_CHIPID
 
 config EXYNOS_CHIPID
-	bool "Exynos Chipid controller driver" if COMPILE_TEST
+	bool "Exynos ChipID controller and ASV driver" if COMPILE_TEST
 	depends on ARCH_EXYNOS || COMPILE_TEST
+	select EXYNOS_ASV_ARM if ARM && ARCH_EXYNOS
 	select MFD_SYSCON
 	select SOC_BUS
+	help
+	  Support for Samsung Exynos SoC ChipID and Adaptive Supply Voltage.
 
 config EXYNOS_PMU
 	bool "Exynos PMU controller driver" if COMPILE_TEST
diff --git a/drivers/soc/samsung/Makefile b/drivers/soc/samsung/Makefile
index 59e8e9453f27..0c523a8de4eb 100644
--- a/drivers/soc/samsung/Makefile
+++ b/drivers/soc/samsung/Makefile
@@ -1,9 +1,8 @@
 # SPDX-License-Identifier: GPL-2.0
 
-obj-$(CONFIG_EXYNOS_ASV)	+= exynos-asv.o
 obj-$(CONFIG_EXYNOS_ASV_ARM)	+= exynos5422-asv.o
 
-obj-$(CONFIG_EXYNOS_CHIPID)	+= exynos-chipid.o
+obj-$(CONFIG_EXYNOS_CHIPID)	+= exynos-chipid.o exynos-asv.o
 obj-$(CONFIG_EXYNOS_PMU)	+= exynos-pmu.o
 
 obj-$(CONFIG_EXYNOS_PMU_ARM_DRIVERS)	+= exynos3250-pmu.o exynos4-pmu.o \
diff --git a/drivers/soc/samsung/exynos-asv.c b/drivers/soc/samsung/exynos-asv.c
index 8abf4dfaa5c5..d60af8acc391 100644
--- a/drivers/soc/samsung/exynos-asv.c
+++ b/drivers/soc/samsung/exynos-asv.c
@@ -2,7 +2,9 @@
 /*
  * Copyright (c) 2019 Samsung Electronics Co., Ltd.
  *	      http://www.samsung.com/
+ * Copyright (c) 2020 Krzysztof Kozlowski <krzk@kernel.org>
  * Author: Sylwester Nawrocki <s.nawrocki@samsung.com>
+ * Author: Krzysztof Kozlowski <krzk@kernel.org>
  *
  * Samsung Exynos SoC Adaptive Supply Voltage support
  */
@@ -10,12 +12,7 @@
 #include <linux/cpu.h>
 #include <linux/device.h>
 #include <linux/errno.h>
-#include <linux/init.h>
-#include <linux/mfd/syscon.h>
-#include <linux/module.h>
 #include <linux/of.h>
-#include <linux/of_device.h>
-#include <linux/platform_device.h>
 #include <linux/pm_opp.h>
 #include <linux/regmap.h>
 #include <linux/soc/samsung/exynos-chipid.h>
@@ -111,7 +108,7 @@ static int exynos_asv_update_opps(struct exynos_asv *asv)
 	return	0;
 }
 
-static int exynos_asv_probe(struct platform_device *pdev)
+int exynos_asv_init(struct device *dev, struct regmap *regmap)
 {
 	int (*probe_func)(struct exynos_asv *asv);
 	struct exynos_asv *asv;
@@ -119,39 +116,39 @@ static int exynos_asv_probe(struct platform_device *pdev)
 	u32 product_id = 0;
 	int ret, i;
 
-	cpu_dev = get_cpu_device(0);
-	ret = dev_pm_opp_get_opp_count(cpu_dev);
-	if (ret < 0)
-		return -EPROBE_DEFER;
-
-	asv = devm_kzalloc(&pdev->dev, sizeof(*asv), GFP_KERNEL);
+	asv = devm_kzalloc(dev, sizeof(*asv), GFP_KERNEL);
 	if (!asv)
 		return -ENOMEM;
 
-	asv->chipid_regmap = device_node_to_regmap(pdev->dev.of_node);
-	if (IS_ERR(asv->chipid_regmap)) {
-		dev_err(&pdev->dev, "Could not find syscon regmap\n");
-		return PTR_ERR(asv->chipid_regmap);
+	asv->chipid_regmap = regmap;
+	asv->dev = dev;
+	ret = regmap_read(asv->chipid_regmap, EXYNOS_CHIPID_REG_PRO_ID,
+			  &product_id);
+	if (ret < 0) {
+		dev_err(dev, "Cannot read revision from ChipID: %d\n", ret);
+		return -ENODEV;
 	}
 
-	regmap_read(asv->chipid_regmap, EXYNOS_CHIPID_REG_PRO_ID, &product_id);
-
 	switch (product_id & EXYNOS_MASK) {
 	case 0xE5422000:
 		probe_func = exynos5422_asv_init;
 		break;
 	default:
-		return -ENODEV;
+		dev_dbg(dev, "No ASV support for this SoC\n");
+		devm_kfree(dev, asv);
+		return 0;
 	}
 
-	ret = of_property_read_u32(pdev->dev.of_node, "samsung,asv-bin",
+	cpu_dev = get_cpu_device(0);
+	ret = dev_pm_opp_get_opp_count(cpu_dev);
+	if (ret < 0)
+		return -EPROBE_DEFER;
+
+	ret = of_property_read_u32(dev->of_node, "samsung,asv-bin",
 				   &asv->of_bin);
 	if (ret < 0)
 		asv->of_bin = -EINVAL;
 
-	asv->dev = &pdev->dev;
-	dev_set_drvdata(&pdev->dev, asv);
-
 	for (i = 0; i < ARRAY_SIZE(asv->subsys); i++)
 		asv->subsys[i].asv = asv;
 
@@ -161,17 +158,3 @@ static int exynos_asv_probe(struct platform_device *pdev)
 
 	return exynos_asv_update_opps(asv);
 }
-
-static const struct of_device_id exynos_asv_of_device_ids[] = {
-	{ .compatible = "samsung,exynos4210-chipid" },
-	{}
-};
-
-static struct platform_driver exynos_asv_driver = {
-	.driver = {
-		.name = "exynos-asv",
-		.of_match_table = exynos_asv_of_device_ids,
-	},
-	.probe	= exynos_asv_probe,
-};
-module_platform_driver(exynos_asv_driver);
diff --git a/drivers/soc/samsung/exynos-asv.h b/drivers/soc/samsung/exynos-asv.h
index 3fd1f2acd999..dcbe154db31e 100644
--- a/drivers/soc/samsung/exynos-asv.h
+++ b/drivers/soc/samsung/exynos-asv.h
@@ -68,4 +68,6 @@ static inline u32 exynos_asv_opp_get_frequency(const struct exynos_asv_subsys *s
 	return __asv_get_table_entry(&subsys->table, level, 0);
 }
 
+int exynos_asv_init(struct device *dev, struct regmap *regmap);
+
 #endif /* __LINUX_SOC_EXYNOS_ASV_H */
diff --git a/drivers/soc/samsung/exynos-chipid.c b/drivers/soc/samsung/exynos-chipid.c
index 1a76eade2ed6..5c1d0f97f766 100644
--- a/drivers/soc/samsung/exynos-chipid.c
+++ b/drivers/soc/samsung/exynos-chipid.c
@@ -2,20 +2,28 @@
 /*
  * Copyright (c) 2019 Samsung Electronics Co., Ltd.
  *	      http://www.samsung.com/
+ * Copyright (c) 2020 Krzysztof Kozlowski <krzk@kernel.org>
  *
  * Exynos - CHIP ID support
  * Author: Pankaj Dubey <pankaj.dubey@samsung.com>
  * Author: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
+ * Author: Krzysztof Kozlowski <krzk@kernel.org>
+ *
+ * Samsung Exynos SoC Adaptive Supply Voltage and Chip ID support
  */
 
-#include <linux/io.h>
+#include <linux/device.h>
+#include <linux/errno.h>
 #include <linux/mfd/syscon.h>
 #include <linux/of.h>
+#include <linux/platform_device.h>
 #include <linux/regmap.h>
 #include <linux/slab.h>
 #include <linux/soc/samsung/exynos-chipid.h>
 #include <linux/sys_soc.h>
 
+#include "exynos-asv.h"
+
 static const struct exynos_soc_id {
 	const char *name;
 	unsigned int id;
@@ -36,7 +44,7 @@ static const struct exynos_soc_id {
 	{ "EXYNOS7420", 0xE7420000 },
 };
 
-static const char * __init product_id_to_soc_id(unsigned int product_id)
+static const char *product_id_to_soc_id(unsigned int product_id)
 {
 	int i;
 
@@ -46,25 +54,17 @@ static const char * __init product_id_to_soc_id(unsigned int product_id)
 	return NULL;
 }
 
-static int __init exynos_chipid_early_init(void)
+static int exynos_chipid_probe(struct platform_device *pdev)
 {
 	struct soc_device_attribute *soc_dev_attr;
 	struct soc_device *soc_dev;
 	struct device_node *root;
-	struct device_node *syscon;
 	struct regmap *regmap;
 	u32 product_id;
 	u32 revision;
 	int ret;
 
-	syscon = of_find_compatible_node(NULL, NULL,
-					 "samsung,exynos4210-chipid");
-	if (!syscon)
-		return -ENODEV;
-
-	regmap = device_node_to_regmap(syscon);
-	of_node_put(syscon);
-
+	regmap = device_node_to_regmap(pdev->dev.of_node);
 	if (IS_ERR(regmap))
 		return PTR_ERR(regmap);
 
@@ -74,7 +74,8 @@ static int __init exynos_chipid_early_init(void)
 
 	revision = product_id & EXYNOS_REV_MASK;
 
-	soc_dev_attr = kzalloc(sizeof(*soc_dev_attr), GFP_KERNEL);
+	soc_dev_attr = devm_kzalloc(&pdev->dev, sizeof(*soc_dev_attr),
+				    GFP_KERNEL);
 	if (!soc_dev_attr)
 		return -ENOMEM;
 
@@ -84,20 +85,24 @@ static int __init exynos_chipid_early_init(void)
 	of_property_read_string(root, "model", &soc_dev_attr->machine);
 	of_node_put(root);
 
-	soc_dev_attr->revision = kasprintf(GFP_KERNEL, "%x", revision);
+	soc_dev_attr->revision = devm_kasprintf(&pdev->dev, GFP_KERNEL,
+						"%x", revision);
 	soc_dev_attr->soc_id = product_id_to_soc_id(product_id);
 	if (!soc_dev_attr->soc_id) {
 		pr_err("Unknown SoC\n");
-		ret = -ENODEV;
-		goto err;
+		return -ENODEV;
 	}
 
 	/* please note that the actual registration will be deferred */
 	soc_dev = soc_device_register(soc_dev_attr);
-	if (IS_ERR(soc_dev)) {
-		ret = PTR_ERR(soc_dev);
+	if (IS_ERR(soc_dev))
+		return PTR_ERR(soc_dev);
+
+	ret = exynos_asv_init(&pdev->dev, regmap);
+	if (ret)
 		goto err;
-	}
+
+	platform_set_drvdata(pdev, soc_dev);
 
 	dev_info(soc_device_to_device(soc_dev),
 		 "Exynos: CPU[%s] PRO_ID[0x%x] REV[0x%x] Detected\n",
@@ -106,9 +111,31 @@ static int __init exynos_chipid_early_init(void)
 	return 0;
 
 err:
-	kfree(soc_dev_attr->revision);
-	kfree(soc_dev_attr);
+	soc_device_unregister(soc_dev);
+
 	return ret;
 }
 
-arch_initcall(exynos_chipid_early_init);
+static int exynos_chipid_remove(struct platform_device *pdev)
+{
+	struct soc_device *soc_dev = platform_get_drvdata(pdev);
+
+	soc_device_unregister(soc_dev);
+
+	return 0;
+}
+
+static const struct of_device_id exynos_chipid_of_device_ids[] = {
+	{ .compatible = "samsung,exynos4210-chipid" },
+	{}
+};
+
+static struct platform_driver exynos_chipid_driver = {
+	.driver = {
+		.name = "exynos-chipid",
+		.of_match_table = exynos_chipid_of_device_ids,
+	},
+	.probe	= exynos_chipid_probe,
+	.remove	= exynos_chipid_remove,
+};
+builtin_platform_driver(exynos_chipid_driver);
diff --git a/drivers/soc/samsung/pm_domains.c b/drivers/soc/samsung/pm_domains.c
index ab8582971bfc..5ec0c13f0aaf 100644
--- a/drivers/soc/samsung/pm_domains.c
+++ b/drivers/soc/samsung/pm_domains.c
@@ -16,7 +16,7 @@
 #include <linux/delay.h>
 #include <linux/of_address.h>
 #include <linux/of_platform.h>
-#include <linux/sched.h>
+#include <linux/pm_runtime.h>
 
 struct exynos_pm_domain_config {
 	/* Value for LOCAL_PWR_CFG and STATUS fields for each domain */
@@ -73,15 +73,15 @@ static int exynos_pd_power_off(struct generic_pm_domain *domain)
 	return exynos_pd_power(domain, false);
 }
 
-static const struct exynos_pm_domain_config exynos4210_cfg __initconst = {
+static const struct exynos_pm_domain_config exynos4210_cfg = {
 	.local_pwr_cfg		= 0x7,
 };
 
-static const struct exynos_pm_domain_config exynos5433_cfg __initconst = {
+static const struct exynos_pm_domain_config exynos5433_cfg = {
 	.local_pwr_cfg		= 0xf,
 };
 
-static const struct of_device_id exynos_pm_domain_of_match[] __initconst = {
+static const struct of_device_id exynos_pm_domain_of_match[] = {
 	{
 		.compatible = "samsung,exynos4210-pd",
 		.data = &exynos4210_cfg,
@@ -92,7 +92,7 @@ static const struct of_device_id exynos_pm_domain_of_match[] __initconst = {
 	{ },
 };
 
-static __init const char *exynos_get_domain_name(struct device_node *node)
+static const char *exynos_get_domain_name(struct device_node *node)
 {
 	const char *name;
 
@@ -101,60 +101,44 @@ static __init const char *exynos_get_domain_name(struct device_node *node)
 	return kstrdup_const(name, GFP_KERNEL);
 }
 
-static __init int exynos4_pm_init_power_domain(void)
+static int exynos_pd_probe(struct platform_device *pdev)
 {
-	struct device_node *np;
-	const struct of_device_id *match;
-
-	for_each_matching_node_and_match(np, exynos_pm_domain_of_match, &match) {
-		const struct exynos_pm_domain_config *pm_domain_cfg;
-		struct exynos_pm_domain *pd;
-		int on;
+	const struct exynos_pm_domain_config *pm_domain_cfg;
+	struct device *dev = &pdev->dev;
+	struct device_node *np = dev->of_node;
+	struct of_phandle_args child, parent;
+	struct exynos_pm_domain *pd;
+	int on, ret;
 
-		pm_domain_cfg = match->data;
+	pm_domain_cfg = of_device_get_match_data(dev);
+	pd = devm_kzalloc(dev, sizeof(*pd), GFP_KERNEL);
+	if (!pd)
+		return -ENOMEM;
 
-		pd = kzalloc(sizeof(*pd), GFP_KERNEL);
-		if (!pd) {
-			of_node_put(np);
-			return -ENOMEM;
-		}
-		pd->pd.name = exynos_get_domain_name(np);
-		if (!pd->pd.name) {
-			kfree(pd);
-			of_node_put(np);
-			return -ENOMEM;
-		}
+	pd->pd.name = exynos_get_domain_name(np);
+	if (!pd->pd.name)
+		return -ENOMEM;
 
-		pd->base = of_iomap(np, 0);
-		if (!pd->base) {
-			pr_warn("%s: failed to map memory\n", __func__);
-			kfree_const(pd->pd.name);
-			kfree(pd);
-			continue;
-		}
-
-		pd->pd.power_off = exynos_pd_power_off;
-		pd->pd.power_on = exynos_pd_power_on;
-		pd->local_pwr_cfg = pm_domain_cfg->local_pwr_cfg;
+	pd->base = of_iomap(np, 0);
+	if (!pd->base) {
+		kfree_const(pd->pd.name);
+		return -ENODEV;
+	}
 
-		on = readl_relaxed(pd->base + 0x4) & pd->local_pwr_cfg;
+	pd->pd.power_off = exynos_pd_power_off;
+	pd->pd.power_on = exynos_pd_power_on;
+	pd->local_pwr_cfg = pm_domain_cfg->local_pwr_cfg;
 
-		pm_genpd_init(&pd->pd, NULL, !on);
-		of_genpd_add_provider_simple(np, &pd->pd);
-	}
+	on = readl_relaxed(pd->base + 0x4) & pd->local_pwr_cfg;
 
-	/* Assign the child power domains to their parents */
-	for_each_matching_node(np, exynos_pm_domain_of_match) {
-		struct of_phandle_args child, parent;
+	pm_genpd_init(&pd->pd, NULL, !on);
+	ret = of_genpd_add_provider_simple(np, &pd->pd);
 
+	if (ret == 0 && of_parse_phandle_with_args(np, "power-domains",
+				      "#power-domain-cells", 0, &parent) == 0) {
 		child.np = np;
 		child.args_count = 0;
 
-		if (of_parse_phandle_with_args(np, "power-domains",
-					       "#power-domain-cells", 0,
-					       &parent) != 0)
-			continue;
-
 		if (of_genpd_add_subdomain(&parent, &child))
 			pr_warn("%pOF failed to add subdomain: %pOF\n",
 				parent.np, child.np);
@@ -163,6 +147,21 @@ static __init int exynos4_pm_init_power_domain(void)
 				parent.np, child.np);
 	}
 
-	return 0;
+	pm_runtime_enable(dev);
+	return ret;
+}
+
+static struct platform_driver exynos_pd_driver = {
+	.probe	= exynos_pd_probe,
+	.driver	= {
+		.name		= "exynos-pd",
+		.of_match_table	= exynos_pm_domain_of_match,
+		.suppress_bind_attrs = true,
+	}
+};
+
+static __init int exynos4_pm_init_power_domain(void)
+{
+	return platform_driver_register(&exynos_pd_driver);
 }
 core_initcall(exynos4_pm_init_power_domain);