drivers/phy/phy-spear1340-miphy.c - kernel/msm-4.19 - Gitiles

 /*
  * ST spear1340-miphy driver
  *
  * Copyright (C) 2014 ST Microelectronics
  * Pratyush Anand <pratyush.anand@st.com>
  * Mohit Kumar <mohit.kumar@st.com>
  *
  * This program is free software; you can redistribute it and/or modify
  * it under the terms of the GNU General Public License version 2 as
  * published by the Free Software Foundation.
  *
  */

 #include <linux/bitops.h>
 #include <linux/delay.h>
 #include <linux/dma-mapping.h>
 #include <linux/kernel.h>
 #include <linux/mfd/syscon.h>
 #include <linux/module.h>
 #include <linux/of_device.h>
 #include <linux/phy/phy.h>
 #include <linux/regmap.h>

 /* SPEAr1340 Registers */
 /* Power Management Registers */
 #define SPEAR1340_PCM_CFG			0x100
 	#define SPEAR1340_PCM_CFG_SATA_POWER_EN		BIT(11)
 #define SPEAR1340_PCM_WKUP_CFG			0x104
 #define SPEAR1340_SWITCH_CTR			0x108

 #define SPEAR1340_PERIP1_SW_RST			0x318
 	#define SPEAR1340_PERIP1_SW_RSATA		BIT(12)
 #define SPEAR1340_PERIP2_SW_RST			0x31C
 #define SPEAR1340_PERIP3_SW_RST			0x320

 /* PCIE - SATA configuration registers */
 #define SPEAR1340_PCIE_SATA_CFG			0x424
 	/* PCIE CFG MASks */
 	#define SPEAR1340_PCIE_CFG_DEVICE_PRESENT	BIT(11)
 	#define SPEAR1340_PCIE_CFG_POWERUP_RESET	BIT(10)
 	#define SPEAR1340_PCIE_CFG_CORE_CLK_EN		BIT(9)
 	#define SPEAR1340_PCIE_CFG_AUX_CLK_EN		BIT(8)
 	#define SPEAR1340_SATA_CFG_TX_CLK_EN		BIT(4)
 	#define SPEAR1340_SATA_CFG_RX_CLK_EN		BIT(3)
 	#define SPEAR1340_SATA_CFG_POWERUP_RESET	BIT(2)
 	#define SPEAR1340_SATA_CFG_PM_CLK_EN		BIT(1)
 	#define SPEAR1340_PCIE_SATA_SEL_PCIE		(0)
 	#define SPEAR1340_PCIE_SATA_SEL_SATA		(1)
 	#define SPEAR1340_PCIE_SATA_CFG_MASK		0xF1F
 	#define SPEAR1340_PCIE_CFG_VAL	(SPEAR1340_PCIE_SATA_SEL_PCIE | \
 			SPEAR1340_PCIE_CFG_AUX_CLK_EN | \
 			SPEAR1340_PCIE_CFG_CORE_CLK_EN | \
 			SPEAR1340_PCIE_CFG_POWERUP_RESET | \
 			SPEAR1340_PCIE_CFG_DEVICE_PRESENT)
 	#define SPEAR1340_SATA_CFG_VAL	(SPEAR1340_PCIE_SATA_SEL_SATA | \
 			SPEAR1340_SATA_CFG_PM_CLK_EN | \
 			SPEAR1340_SATA_CFG_POWERUP_RESET | \
 			SPEAR1340_SATA_CFG_RX_CLK_EN | \
 			SPEAR1340_SATA_CFG_TX_CLK_EN)

 #define SPEAR1340_PCIE_MIPHY_CFG		0x428
 	#define SPEAR1340_MIPHY_OSC_BYPASS_EXT		BIT(31)
 	#define SPEAR1340_MIPHY_CLK_REF_DIV2		BIT(27)
 	#define SPEAR1340_MIPHY_CLK_REF_DIV4		(2 << 27)
 	#define SPEAR1340_MIPHY_CLK_REF_DIV8		(3 << 27)
 	#define SPEAR1340_MIPHY_PLL_RATIO_TOP(x)	(x << 0)
 	#define SPEAR1340_PCIE_MIPHY_CFG_MASK		0xF80000FF
 	#define SPEAR1340_PCIE_SATA_MIPHY_CFG_SATA \
 			(SPEAR1340_MIPHY_OSC_BYPASS_EXT | \
 			SPEAR1340_MIPHY_CLK_REF_DIV2 | \
 			SPEAR1340_MIPHY_PLL_RATIO_TOP(60))
 	#define SPEAR1340_PCIE_SATA_MIPHY_CFG_SATA_25M_CRYSTAL_CLK \
 			(SPEAR1340_MIPHY_PLL_RATIO_TOP(120))
 	#define SPEAR1340_PCIE_SATA_MIPHY_CFG_PCIE \
 			(SPEAR1340_MIPHY_OSC_BYPASS_EXT | \
 			SPEAR1340_MIPHY_PLL_RATIO_TOP(25))

 enum spear1340_miphy_mode {
 	SATA,
 	PCIE,
 };

 struct spear1340_miphy_priv {
 	/* phy mode: 0 for SATA 1 for PCIe */
 	enum spear1340_miphy_mode	mode;
 	/* regmap for any soc specific misc registers */
 	struct regmap			*misc;
 	/* phy struct pointer */
 	struct phy			*phy;
 };

 static int spear1340_miphy_sata_init(struct spear1340_miphy_priv *priv)
 {
 	regmap_update_bits(priv->misc, SPEAR1340_PCIE_SATA_CFG,
 			   SPEAR1340_PCIE_SATA_CFG_MASK,
 			   SPEAR1340_SATA_CFG_VAL);
 	regmap_update_bits(priv->misc, SPEAR1340_PCIE_MIPHY_CFG,
 			   SPEAR1340_PCIE_MIPHY_CFG_MASK,
 			   SPEAR1340_PCIE_SATA_MIPHY_CFG_SATA_25M_CRYSTAL_CLK);
 	/* Switch on sata power domain */
 	regmap_update_bits(priv->misc, SPEAR1340_PCM_CFG,
 			   SPEAR1340_PCM_CFG_SATA_POWER_EN,
 			   SPEAR1340_PCM_CFG_SATA_POWER_EN);
 	/* Wait for SATA power domain on */
 	msleep(20);

 	/* Disable PCIE SATA Controller reset */
 	regmap_update_bits(priv->misc, SPEAR1340_PERIP1_SW_RST,
 			   SPEAR1340_PERIP1_SW_RSATA, 0);
 	/* Wait for SATA reset de-assert completion */
 	msleep(20);

 	return 0;
 }

 static int spear1340_miphy_sata_exit(struct spear1340_miphy_priv *priv)
 {
 	regmap_update_bits(priv->misc, SPEAR1340_PCIE_SATA_CFG,
 			   SPEAR1340_PCIE_SATA_CFG_MASK, 0);
 	regmap_update_bits(priv->misc, SPEAR1340_PCIE_MIPHY_CFG,
 			   SPEAR1340_PCIE_MIPHY_CFG_MASK, 0);

 	/* Enable PCIE SATA Controller reset */
 	regmap_update_bits(priv->misc, SPEAR1340_PERIP1_SW_RST,
 			   SPEAR1340_PERIP1_SW_RSATA,
 			   SPEAR1340_PERIP1_SW_RSATA);
 	/* Wait for SATA power domain off */
 	msleep(20);
 	/* Switch off sata power domain */
 	regmap_update_bits(priv->misc, SPEAR1340_PCM_CFG,
 			   SPEAR1340_PCM_CFG_SATA_POWER_EN, 0);
 	/* Wait for SATA reset assert completion */
 	msleep(20);

 	return 0;
 }

 static int spear1340_miphy_pcie_init(struct spear1340_miphy_priv *priv)
 {
 	regmap_update_bits(priv->misc, SPEAR1340_PCIE_MIPHY_CFG,
 			   SPEAR1340_PCIE_MIPHY_CFG_MASK,
 			   SPEAR1340_PCIE_SATA_MIPHY_CFG_PCIE);
 	regmap_update_bits(priv->misc, SPEAR1340_PCIE_SATA_CFG,
 			   SPEAR1340_PCIE_SATA_CFG_MASK,
 			   SPEAR1340_PCIE_CFG_VAL);

 	return 0;
 }

 static int spear1340_miphy_pcie_exit(struct spear1340_miphy_priv *priv)
 {
 	regmap_update_bits(priv->misc, SPEAR1340_PCIE_MIPHY_CFG,
 			   SPEAR1340_PCIE_MIPHY_CFG_MASK, 0);
 	regmap_update_bits(priv->misc, SPEAR1340_PCIE_SATA_CFG,
 			   SPEAR1340_PCIE_SATA_CFG_MASK, 0);

 	return 0;
 }

 static int spear1340_miphy_init(struct phy *phy)
 {
 	struct spear1340_miphy_priv *priv = phy_get_drvdata(phy);
 	int ret = 0;

 	if (priv->mode == SATA)
 		ret = spear1340_miphy_sata_init(priv);
 	else if (priv->mode == PCIE)
 		ret = spear1340_miphy_pcie_init(priv);

 	return ret;
 }

 static int spear1340_miphy_exit(struct phy *phy)
 {
 	struct spear1340_miphy_priv *priv = phy_get_drvdata(phy);
 	int ret = 0;

 	if (priv->mode == SATA)
 		ret = spear1340_miphy_sata_exit(priv);
 	else if (priv->mode == PCIE)
 		ret = spear1340_miphy_pcie_exit(priv);

 	return ret;
 }

 static const struct of_device_id spear1340_miphy_of_match[] = {
 	{ .compatible = "st,spear1340-miphy" },
 	{ },
 };
 MODULE_DEVICE_TABLE(of, spear1340_miphy_of_match);

 static struct phy_ops spear1340_miphy_ops = {
 	.init = spear1340_miphy_init,
 	.exit = spear1340_miphy_exit,
 	.owner = THIS_MODULE,
 };

 #ifdef CONFIG_PM_SLEEP
 static int spear1340_miphy_suspend(struct device *dev)
 {
 	struct spear1340_miphy_priv *priv = dev_get_drvdata(dev);
 	int ret = 0;

 	if (priv->mode == SATA)
 		ret = spear1340_miphy_sata_exit(priv);

 	return ret;
 }

 static int spear1340_miphy_resume(struct device *dev)
 {
 	struct spear1340_miphy_priv *priv = dev_get_drvdata(dev);
 	int ret = 0;

 	if (priv->mode == SATA)
 		ret = spear1340_miphy_sata_init(priv);

 	return ret;
 }
 #endif

 static SIMPLE_DEV_PM_OPS(spear1340_miphy_pm_ops, spear1340_miphy_suspend,
 			 spear1340_miphy_resume);

 static struct phy *spear1340_miphy_xlate(struct device *dev,
 					 struct of_phandle_args *args)
 {
 	struct spear1340_miphy_priv *priv = dev_get_drvdata(dev);

 	if (args->args_count < 1) {
 		dev_err(dev, "DT did not pass correct no of args\n");
 		return NULL;
 	}

 	priv->mode = args->args[0];

 	if (priv->mode != SATA && priv->mode != PCIE) {
 		dev_err(dev, "DT did not pass correct phy mode\n");
 		return NULL;
 	}

 	return priv->phy;
 }

 static int spear1340_miphy_probe(struct platform_device *pdev)
 {
 	struct device *dev = &pdev->dev;
 	struct spear1340_miphy_priv *priv;
 	struct phy_provider *phy_provider;

 	priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL);
 	if (!priv) {
 		dev_err(dev, "can't alloc spear1340_miphy private date memory\n");
 		return -ENOMEM;
 	}

 	priv->misc =
 		syscon_regmap_lookup_by_phandle(dev->of_node, "misc");
 	if (IS_ERR(priv->misc)) {
 		dev_err(dev, "failed to find misc regmap\n");
 		return PTR_ERR(priv->misc);
 	}

 	priv->phy = devm_phy_create(dev, NULL, &spear1340_miphy_ops, NULL);
 	if (IS_ERR(priv->phy)) {
 		dev_err(dev, "failed to create SATA PCIe PHY\n");
 		return PTR_ERR(priv->phy);
 	}

 	dev_set_drvdata(dev, priv);
 	phy_set_drvdata(priv->phy, priv);

 	phy_provider =
 		devm_of_phy_provider_register(dev, spear1340_miphy_xlate);
 	if (IS_ERR(phy_provider)) {
 		dev_err(dev, "failed to register phy provider\n");
 		return PTR_ERR(phy_provider);
 	}

 	return 0;
 }

 static struct platform_driver spear1340_miphy_driver = {
 	.probe		= spear1340_miphy_probe,
 	.driver = {
 		.name = "spear1340-miphy",
 		.owner = THIS_MODULE,
 		.pm = &spear1340_miphy_pm_ops,
 		.of_match_table = of_match_ptr(spear1340_miphy_of_match),
 	},
 };

 static int __init spear1340_miphy_phy_init(void)
 {
 	return platform_driver_register(&spear1340_miphy_driver);
 }
 module_init(spear1340_miphy_phy_init);

 static void __exit spear1340_miphy_phy_exit(void)
 {
 	platform_driver_unregister(&spear1340_miphy_driver);
 }
 module_exit(spear1340_miphy_phy_exit);

 MODULE_DESCRIPTION("ST SPEAR1340-MIPHY driver");
 MODULE_AUTHOR("Pratyush Anand <pratyush.anand@st.com>");
 MODULE_LICENSE("GPL v2");
	/*
	* ST spear1340-miphy driver
	*
	* Copyright (C) 2014 ST Microelectronics
	* Pratyush Anand <pratyush.anand@st.com>
	* Mohit Kumar <mohit.kumar@st.com>
	*
	* This program is free software; you can redistribute it and/or modify
	* it under the terms of the GNU General Public License version 2 as
	* published by the Free Software Foundation.
	*
	*/

	#include <linux/bitops.h>
	#include <linux/delay.h>
	#include <linux/dma-mapping.h>
	#include <linux/kernel.h>
	#include <linux/mfd/syscon.h>
	#include <linux/module.h>
	#include <linux/of_device.h>
	#include <linux/phy/phy.h>
	#include <linux/regmap.h>

	/* SPEAr1340 Registers */
	/* Power Management Registers */
	#define SPEAR1340_PCM_CFG 0x100
	#define SPEAR1340_PCM_CFG_SATA_POWER_EN BIT(11)
	#define SPEAR1340_PCM_WKUP_CFG 0x104
	#define SPEAR1340_SWITCH_CTR 0x108

	#define SPEAR1340_PERIP1_SW_RST 0x318
	#define SPEAR1340_PERIP1_SW_RSATA BIT(12)
	#define SPEAR1340_PERIP2_SW_RST 0x31C
	#define SPEAR1340_PERIP3_SW_RST 0x320

	/* PCIE - SATA configuration registers */
	#define SPEAR1340_PCIE_SATA_CFG 0x424
	/* PCIE CFG MASks */
	#define SPEAR1340_PCIE_CFG_DEVICE_PRESENT BIT(11)
	#define SPEAR1340_PCIE_CFG_POWERUP_RESET BIT(10)
	#define SPEAR1340_PCIE_CFG_CORE_CLK_EN BIT(9)
	#define SPEAR1340_PCIE_CFG_AUX_CLK_EN BIT(8)
	#define SPEAR1340_SATA_CFG_TX_CLK_EN BIT(4)
	#define SPEAR1340_SATA_CFG_RX_CLK_EN BIT(3)
	#define SPEAR1340_SATA_CFG_POWERUP_RESET BIT(2)
	#define SPEAR1340_SATA_CFG_PM_CLK_EN BIT(1)
	#define SPEAR1340_PCIE_SATA_SEL_PCIE (0)
	#define SPEAR1340_PCIE_SATA_SEL_SATA (1)
	#define SPEAR1340_PCIE_SATA_CFG_MASK 0xF1F
	#define SPEAR1340_PCIE_CFG_VAL (SPEAR1340_PCIE_SATA_SEL_PCIE \| \
	SPEAR1340_PCIE_CFG_AUX_CLK_EN \| \
	SPEAR1340_PCIE_CFG_CORE_CLK_EN \| \
	SPEAR1340_PCIE_CFG_POWERUP_RESET \| \
	SPEAR1340_PCIE_CFG_DEVICE_PRESENT)
	#define SPEAR1340_SATA_CFG_VAL (SPEAR1340_PCIE_SATA_SEL_SATA \| \
	SPEAR1340_SATA_CFG_PM_CLK_EN \| \
	SPEAR1340_SATA_CFG_POWERUP_RESET \| \
	SPEAR1340_SATA_CFG_RX_CLK_EN \| \
	SPEAR1340_SATA_CFG_TX_CLK_EN)

	#define SPEAR1340_PCIE_MIPHY_CFG 0x428
	#define SPEAR1340_MIPHY_OSC_BYPASS_EXT BIT(31)
	#define SPEAR1340_MIPHY_CLK_REF_DIV2 BIT(27)
	#define SPEAR1340_MIPHY_CLK_REF_DIV4 (2 << 27)
	#define SPEAR1340_MIPHY_CLK_REF_DIV8 (3 << 27)
	#define SPEAR1340_MIPHY_PLL_RATIO_TOP(x) (x << 0)
	#define SPEAR1340_PCIE_MIPHY_CFG_MASK 0xF80000FF
	#define SPEAR1340_PCIE_SATA_MIPHY_CFG_SATA \
	(SPEAR1340_MIPHY_OSC_BYPASS_EXT \| \
	SPEAR1340_MIPHY_CLK_REF_DIV2 \| \
	SPEAR1340_MIPHY_PLL_RATIO_TOP(60))
	#define SPEAR1340_PCIE_SATA_MIPHY_CFG_SATA_25M_CRYSTAL_CLK \
	(SPEAR1340_MIPHY_PLL_RATIO_TOP(120))
	#define SPEAR1340_PCIE_SATA_MIPHY_CFG_PCIE \
	(SPEAR1340_MIPHY_OSC_BYPASS_EXT \| \
	SPEAR1340_MIPHY_PLL_RATIO_TOP(25))

	enum spear1340_miphy_mode {
	SATA,
	PCIE,
	};

	struct spear1340_miphy_priv {
	/* phy mode: 0 for SATA 1 for PCIe */
	enum spear1340_miphy_mode mode;
	/* regmap for any soc specific misc registers */
	struct regmap *misc;
	/* phy struct pointer */
	struct phy *phy;
	};

	static int spear1340_miphy_sata_init(struct spear1340_miphy_priv *priv)
	{
	regmap_update_bits(priv->misc, SPEAR1340_PCIE_SATA_CFG,
	SPEAR1340_PCIE_SATA_CFG_MASK,
	SPEAR1340_SATA_CFG_VAL);
	regmap_update_bits(priv->misc, SPEAR1340_PCIE_MIPHY_CFG,
	SPEAR1340_PCIE_MIPHY_CFG_MASK,
	SPEAR1340_PCIE_SATA_MIPHY_CFG_SATA_25M_CRYSTAL_CLK);
	/* Switch on sata power domain */
	regmap_update_bits(priv->misc, SPEAR1340_PCM_CFG,
	SPEAR1340_PCM_CFG_SATA_POWER_EN,
	SPEAR1340_PCM_CFG_SATA_POWER_EN);
	/* Wait for SATA power domain on */
	msleep(20);

	/* Disable PCIE SATA Controller reset */
	regmap_update_bits(priv->misc, SPEAR1340_PERIP1_SW_RST,
	SPEAR1340_PERIP1_SW_RSATA, 0);
	/* Wait for SATA reset de-assert completion */
	msleep(20);

	return 0;
	}

	static int spear1340_miphy_sata_exit(struct spear1340_miphy_priv *priv)
	{
	regmap_update_bits(priv->misc, SPEAR1340_PCIE_SATA_CFG,
	SPEAR1340_PCIE_SATA_CFG_MASK, 0);
	regmap_update_bits(priv->misc, SPEAR1340_PCIE_MIPHY_CFG,
	SPEAR1340_PCIE_MIPHY_CFG_MASK, 0);

	/* Enable PCIE SATA Controller reset */
	regmap_update_bits(priv->misc, SPEAR1340_PERIP1_SW_RST,
	SPEAR1340_PERIP1_SW_RSATA,
	SPEAR1340_PERIP1_SW_RSATA);
	/* Wait for SATA power domain off */
	msleep(20);
	/* Switch off sata power domain */
	regmap_update_bits(priv->misc, SPEAR1340_PCM_CFG,
	SPEAR1340_PCM_CFG_SATA_POWER_EN, 0);
	/* Wait for SATA reset assert completion */
	msleep(20);

	return 0;
	}

	static int spear1340_miphy_pcie_init(struct spear1340_miphy_priv *priv)
	{
	regmap_update_bits(priv->misc, SPEAR1340_PCIE_MIPHY_CFG,
	SPEAR1340_PCIE_MIPHY_CFG_MASK,
	SPEAR1340_PCIE_SATA_MIPHY_CFG_PCIE);
	regmap_update_bits(priv->misc, SPEAR1340_PCIE_SATA_CFG,
	SPEAR1340_PCIE_SATA_CFG_MASK,
	SPEAR1340_PCIE_CFG_VAL);

	return 0;
	}

	static int spear1340_miphy_pcie_exit(struct spear1340_miphy_priv *priv)
	{
	regmap_update_bits(priv->misc, SPEAR1340_PCIE_MIPHY_CFG,
	SPEAR1340_PCIE_MIPHY_CFG_MASK, 0);
	regmap_update_bits(priv->misc, SPEAR1340_PCIE_SATA_CFG,
	SPEAR1340_PCIE_SATA_CFG_MASK, 0);

	return 0;
	}

	static int spear1340_miphy_init(struct phy *phy)
	{
	struct spear1340_miphy_priv *priv = phy_get_drvdata(phy);
	int ret = 0;

	if (priv->mode == SATA)
	ret = spear1340_miphy_sata_init(priv);
	else if (priv->mode == PCIE)
	ret = spear1340_miphy_pcie_init(priv);

	return ret;
	}

	static int spear1340_miphy_exit(struct phy *phy)
	{
	struct spear1340_miphy_priv *priv = phy_get_drvdata(phy);
	int ret = 0;

	if (priv->mode == SATA)
	ret = spear1340_miphy_sata_exit(priv);
	else if (priv->mode == PCIE)
	ret = spear1340_miphy_pcie_exit(priv);

	return ret;
	}

	static const struct of_device_id spear1340_miphy_of_match[] = {
	{ .compatible = "st,spear1340-miphy" },
	{ },
	};
	MODULE_DEVICE_TABLE(of, spear1340_miphy_of_match);

	static struct phy_ops spear1340_miphy_ops = {
	.init = spear1340_miphy_init,
	.exit = spear1340_miphy_exit,
	.owner = THIS_MODULE,
	};

	#ifdef CONFIG_PM_SLEEP
	static int spear1340_miphy_suspend(struct device *dev)
	{
	struct spear1340_miphy_priv *priv = dev_get_drvdata(dev);
	int ret = 0;

	if (priv->mode == SATA)
	ret = spear1340_miphy_sata_exit(priv);

	return ret;
	}

	static int spear1340_miphy_resume(struct device *dev)
	{
	struct spear1340_miphy_priv *priv = dev_get_drvdata(dev);
	int ret = 0;

	if (priv->mode == SATA)
	ret = spear1340_miphy_sata_init(priv);

	return ret;
	}
	#endif

	static SIMPLE_DEV_PM_OPS(spear1340_miphy_pm_ops, spear1340_miphy_suspend,
	spear1340_miphy_resume);

	static struct phy spear1340_miphy_xlate(struct device dev,
	struct of_phandle_args *args)
	{
	struct spear1340_miphy_priv *priv = dev_get_drvdata(dev);

	if (args->args_count < 1) {
	dev_err(dev, "DT did not pass correct no of args\n");
	return NULL;
	}

	priv->mode = args->args[0];

	if (priv->mode != SATA && priv->mode != PCIE) {
	dev_err(dev, "DT did not pass correct phy mode\n");
	return NULL;
	}

	return priv->phy;
	}

	static int spear1340_miphy_probe(struct platform_device *pdev)
	{
	struct device *dev = &pdev->dev;
	struct spear1340_miphy_priv *priv;
	struct phy_provider *phy_provider;

	priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL);
	if (!priv) {
	dev_err(dev, "can't alloc spear1340_miphy private date memory\n");
	return -ENOMEM;
	}

	priv->misc =
	syscon_regmap_lookup_by_phandle(dev->of_node, "misc");
	if (IS_ERR(priv->misc)) {
	dev_err(dev, "failed to find misc regmap\n");
	return PTR_ERR(priv->misc);
	}

	priv->phy = devm_phy_create(dev, NULL, &spear1340_miphy_ops, NULL);
	if (IS_ERR(priv->phy)) {
	dev_err(dev, "failed to create SATA PCIe PHY\n");
	return PTR_ERR(priv->phy);
	}

	dev_set_drvdata(dev, priv);
	phy_set_drvdata(priv->phy, priv);

	phy_provider =
	devm_of_phy_provider_register(dev, spear1340_miphy_xlate);
	if (IS_ERR(phy_provider)) {
	dev_err(dev, "failed to register phy provider\n");
	return PTR_ERR(phy_provider);
	}

	return 0;
	}

	static struct platform_driver spear1340_miphy_driver = {
	.probe = spear1340_miphy_probe,
	.driver = {
	.name = "spear1340-miphy",
	.owner = THIS_MODULE,
	.pm = &spear1340_miphy_pm_ops,
	.of_match_table = of_match_ptr(spear1340_miphy_of_match),
	},
	};

	static int __init spear1340_miphy_phy_init(void)
	{
	return platform_driver_register(&spear1340_miphy_driver);
	}
	module_init(spear1340_miphy_phy_init);

	static void __exit spear1340_miphy_phy_exit(void)
	{
	platform_driver_unregister(&spear1340_miphy_driver);
	}
	module_exit(spear1340_miphy_phy_exit);

	MODULE_DESCRIPTION("ST SPEAR1340-MIPHY driver");
	MODULE_AUTHOR("Pratyush Anand <pratyush.anand@st.com>");
	MODULE_LICENSE("GPL v2");