Linux-libre 4.2-gnu

7 files changed, 188 insertions, 293 deletions

diff --git a/drivers/usb/phy/Kconfig b/drivers/usb/phy/Kconfig
index 2175678e6..869c0cfca 100644
--- a/drivers/usb/phy/Kconfig
+++ b/drivers/usb/phy/Kconfig
@@ -91,7 +91,7 @@ config TWL6030_USB
 
 config USB_GPIO_VBUS
 	tristate "GPIO based peripheral-only VBUS sensing 'transceiver'"
-	depends on GPIOLIB
+	depends on GPIOLIB || COMPILE_TEST
 	select USB_PHY
 	help
 	  Provides simple GPIO VBUS sensing for controllers with an
@@ -141,6 +141,7 @@ config USB_MSM_OTG
 	tristate "Qualcomm on-chip USB OTG controller support"
 	depends on (USB || USB_GADGET) && (ARCH_QCOM || COMPILE_TEST)
 	depends on RESET_CONTROLLER
+	depends on EXTCON
 	select USB_PHY
 	help
 	  Enable this to support the USB OTG transceiver on Qualcomm chips. It
@@ -186,19 +187,6 @@ config USB_RCAR_PHY
 	  To compile this driver as a module, choose M here: the
 	  module will be called phy-rcar-usb.
 
-config USB_RCAR_GEN2_PHY
-	tristate "Renesas R-Car Gen2 USB PHY support"
-	depends on ARCH_R8A7790 || ARCH_R8A7791 || COMPILE_TEST
-	select USB_PHY
-	help
-	  Say Y here to add support for the Renesas R-Car Gen2 USB PHY driver.
-	  It is typically used to control internal USB PHY for USBHS,
-	  and to configure shared USB channels 0 and 2.
-	  This driver supports R8A7790 and R8A7791.
-
-	  To compile this driver as a module, choose M here: the
-	  module will be called phy-rcar-gen2-usb.
-
 config USB_ULPI
 	bool "Generic ULPI Transceiver Driver"
 	depends on ARM || ARM64
diff --git a/drivers/usb/phy/Makefile b/drivers/usb/phy/Makefile
index 75f2bba58..e36ab1d46 100644
--- a/drivers/usb/phy/Makefile
+++ b/drivers/usb/phy/Makefile
@@ -23,7 +23,6 @@ obj-$(CONFIG_USB_MSM_OTG)		+= phy-msm-usb.o
 obj-$(CONFIG_USB_MV_OTG)		+= phy-mv-usb.o
 obj-$(CONFIG_USB_MXS_PHY)		+= phy-mxs-usb.o
 obj-$(CONFIG_USB_RCAR_PHY)		+= phy-rcar-usb.o
-obj-$(CONFIG_USB_RCAR_GEN2_PHY)		+= phy-rcar-gen2-usb.o
 obj-$(CONFIG_USB_ULPI)			+= phy-ulpi.o
 obj-$(CONFIG_USB_ULPI_VIEWPORT)		+= phy-ulpi-viewport.o
 obj-$(CONFIG_KEYSTONE_USB_PHY)		+= phy-keystone.o
diff --git a/drivers/usb/phy/phy-ab8500-usb.c b/drivers/usb/phy/phy-ab8500-usb.c
index 03ab0c699..0c912d395 100644
--- a/drivers/usb/phy/phy-ab8500-usb.c
+++ b/drivers/usb/phy/phy-ab8500-usb.c
@@ -1504,7 +1504,7 @@ static int ab8500_usb_remove(struct platform_device *pdev)
 	return 0;
 }
 
-static struct platform_device_id ab8500_usb_devtype[] = {
+static const struct platform_device_id ab8500_usb_devtype[] = {
 	{ .name = "ab8500-usb", },
 	{ .name = "ab8540-usb", },
 	{ .name = "ab9540-usb", },
diff --git a/drivers/usb/phy/phy-msm-usb.c b/drivers/usb/phy/phy-msm-usb.c
index c9156beea..00c49bb1b 100644
--- a/drivers/usb/phy/phy-msm-usb.c
+++ b/drivers/usb/phy/phy-msm-usb.c
@@ -240,8 +240,14 @@ static void ulpi_init(struct msm_otg *motg)
 static int msm_phy_notify_disconnect(struct usb_phy *phy,
 				   enum usb_device_speed speed)
 {
+	struct msm_otg *motg = container_of(phy, struct msm_otg, phy);
 	int val;
 
+	if (motg->manual_pullup) {
+		val = ULPI_MISC_A_VBUSVLDEXT | ULPI_MISC_A_VBUSVLDEXTSEL;
+		usb_phy_io_write(phy, val, ULPI_CLR(ULPI_MISC_A));
+	}
+
 	/*
 	 * Put the transceiver in non-driving mode. Otherwise host
 	 * may not detect soft-disconnection.
@@ -422,6 +428,24 @@ static int msm_phy_init(struct usb_phy *phy)
 		ulpi_write(phy, ulpi_val, ULPI_USB_INT_EN_FALL);
 	}
 
+	if (motg->manual_pullup) {
+		val = ULPI_MISC_A_VBUSVLDEXTSEL | ULPI_MISC_A_VBUSVLDEXT;
+		ulpi_write(phy, val, ULPI_SET(ULPI_MISC_A));
+
+		val = readl(USB_GENCONFIG_2);
+		val |= GENCONFIG_2_SESS_VLD_CTRL_EN;
+		writel(val, USB_GENCONFIG_2);
+
+		val = readl(USB_USBCMD);
+		val |= USBCMD_SESS_VLD_CTRL;
+		writel(val, USB_USBCMD);
+
+		val = ulpi_read(phy, ULPI_FUNC_CTRL);
+		val &= ~ULPI_FUNC_CTRL_OPMODE_MASK;
+		val |= ULPI_FUNC_CTRL_OPMODE_NORMAL;
+		ulpi_write(phy, val, ULPI_FUNC_CTRL);
+	}
+
 	if (motg->phy_number)
 		writel(readl(USB_PHY_CTRL2) | BIT(16), USB_PHY_CTRL2);
 
@@ -1436,9 +1460,42 @@ static const struct of_device_id msm_otg_dt_match[] = {
 };
 MODULE_DEVICE_TABLE(of, msm_otg_dt_match);
 
+static int msm_otg_vbus_notifier(struct notifier_block *nb, unsigned long event,
+				void *ptr)
+{
+	struct msm_usb_cable *vbus = container_of(nb, struct msm_usb_cable, nb);
+	struct msm_otg *motg = container_of(vbus, struct msm_otg, vbus);
+
+	if (event)
+		set_bit(B_SESS_VLD, &motg->inputs);
+	else
+		clear_bit(B_SESS_VLD, &motg->inputs);
+
+	schedule_work(&motg->sm_work);
+
+	return NOTIFY_DONE;
+}
+
+static int msm_otg_id_notifier(struct notifier_block *nb, unsigned long event,
+				void *ptr)
+{
+	struct msm_usb_cable *id = container_of(nb, struct msm_usb_cable, nb);
+	struct msm_otg *motg = container_of(id, struct msm_otg, id);
+
+	if (event)
+		clear_bit(ID, &motg->inputs);
+	else
+		set_bit(ID, &motg->inputs);
+
+	schedule_work(&motg->sm_work);
+
+	return NOTIFY_DONE;
+}
+
 static int msm_otg_read_dt(struct platform_device *pdev, struct msm_otg *motg)
 {
 	struct msm_otg_platform_data *pdata;
+	struct extcon_dev *ext_id, *ext_vbus;
 	const struct of_device_id *id;
 	struct device_node *node = pdev->dev.of_node;
 	struct property *prop;
@@ -1487,6 +1544,54 @@ static int msm_otg_read_dt(struct platform_device *pdev, struct msm_otg *motg)
 		motg->vdd_levels[VDD_LEVEL_MAX] = tmp[VDD_LEVEL_MAX];
 	}
 
+	motg->manual_pullup = of_property_read_bool(node, "qcom,manual-pullup");
+
+	ext_id = ERR_PTR(-ENODEV);
+	ext_vbus = ERR_PTR(-ENODEV);
+	if (of_property_read_bool(node, "extcon")) {
+
+		/* Each one of them is not mandatory */
+		ext_vbus = extcon_get_edev_by_phandle(&pdev->dev, 0);
+		if (IS_ERR(ext_vbus) && PTR_ERR(ext_vbus) != -ENODEV)
+			return PTR_ERR(ext_vbus);
+
+		ext_id = extcon_get_edev_by_phandle(&pdev->dev, 1);
+		if (IS_ERR(ext_id) && PTR_ERR(ext_id) != -ENODEV)
+			return PTR_ERR(ext_id);
+	}
+
+	if (!IS_ERR(ext_vbus)) {
+		motg->vbus.nb.notifier_call = msm_otg_vbus_notifier;
+		ret = extcon_register_interest(&motg->vbus.conn, ext_vbus->name,
+					       "USB", &motg->vbus.nb);
+		if (ret < 0) {
+			dev_err(&pdev->dev, "register VBUS notifier failed\n");
+			return ret;
+		}
+
+		ret = extcon_get_cable_state(ext_vbus, "USB");
+		if (ret)
+			set_bit(B_SESS_VLD, &motg->inputs);
+		else
+			clear_bit(B_SESS_VLD, &motg->inputs);
+	}
+
+	if (!IS_ERR(ext_id)) {
+		motg->id.nb.notifier_call = msm_otg_id_notifier;
+		ret = extcon_register_interest(&motg->id.conn, ext_id->name,
+					       "USB-HOST", &motg->id.nb);
+		if (ret < 0) {
+			dev_err(&pdev->dev, "register ID notifier failed\n");
+			return ret;
+		}
+
+		ret = extcon_get_cable_state(ext_id, "USB-HOST");
+		if (ret)
+			clear_bit(ID, &motg->inputs);
+		else
+			set_bit(ID, &motg->inputs);
+	}
+
 	prop = of_find_property(node, "qcom,phy-init-sequence", &len);
 	if (!prop || !len)
 		return 0;
@@ -1700,6 +1805,11 @@ static int msm_otg_remove(struct platform_device *pdev)
 	if (phy->otg->host || phy->otg->gadget)
 		return -EBUSY;
 
+	if (motg->id.conn.edev)
+		extcon_unregister_interest(&motg->id.conn);
+	if (motg->vbus.conn.edev)
+		extcon_unregister_interest(&motg->vbus.conn);
+
 	msm_otg_debugfs_cleanup();
 	cancel_delayed_work_sync(&motg->chg_work);
 	cancel_work_sync(&motg->sm_work);
diff --git a/drivers/usb/phy/phy-rcar-gen2-usb.c b/drivers/usb/phy/phy-rcar-gen2-usb.c
deleted file mode 100644
index f81800b65..000000000
--- a/drivers/usb/phy/phy-rcar-gen2-usb.c
+++ /dev/null
@@ -1,246 +0,0 @@
-/*
- * Renesas R-Car Gen2 USB phy driver
- *
- * Copyright (C) 2013 Renesas Solutions Corp.
- * Copyright (C) 2013 Cogent Embedded, Inc.
- *
- * 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/clk.h>
-#include <linux/delay.h>
-#include <linux/io.h>
-#include <linux/module.h>
-#include <linux/platform_data/usb-rcar-gen2-phy.h>
-#include <linux/platform_device.h>
-#include <linux/spinlock.h>
-#include <linux/usb/otg.h>
-
-struct rcar_gen2_usb_phy_priv {
-	struct usb_phy phy;
-	void __iomem *base;
-	struct clk *clk;
-	spinlock_t lock;
-	int usecount;
-	u32 ugctrl2;
-};
-
-#define usb_phy_to_priv(p) container_of(p, struct rcar_gen2_usb_phy_priv, phy)
-
-/* Low Power Status register */
-#define USBHS_LPSTS_REG			0x02
-#define USBHS_LPSTS_SUSPM		(1 << 14)
-
-/* USB General control register */
-#define USBHS_UGCTRL_REG		0x80
-#define USBHS_UGCTRL_CONNECT		(1 << 2)
-#define USBHS_UGCTRL_PLLRESET		(1 << 0)
-
-/* USB General control register 2 */
-#define USBHS_UGCTRL2_REG		0x84
-#define USBHS_UGCTRL2_USB0_PCI		(1 << 4)
-#define USBHS_UGCTRL2_USB0_HS		(3 << 4)
-#define USBHS_UGCTRL2_USB2_PCI		(0 << 31)
-#define USBHS_UGCTRL2_USB2_SS		(1 << 31)
-
-/* USB General status register */
-#define USBHS_UGSTS_REG			0x88
-#define USBHS_UGSTS_LOCK		(1 << 8)
-
-/* Enable USBHS internal phy */
-static int __rcar_gen2_usbhs_phy_enable(void __iomem *base)
-{
-	u32 val;
-	int i;
-
-	/* USBHS PHY power on */
-	val = ioread32(base + USBHS_UGCTRL_REG);
-	val &= ~USBHS_UGCTRL_PLLRESET;
-	iowrite32(val, base + USBHS_UGCTRL_REG);
-
-	val = ioread16(base + USBHS_LPSTS_REG);
-	val |= USBHS_LPSTS_SUSPM;
-	iowrite16(val, base + USBHS_LPSTS_REG);
-
-	for (i = 0; i < 20; i++) {
-		val = ioread32(base + USBHS_UGSTS_REG);
-		if ((val & USBHS_UGSTS_LOCK) == USBHS_UGSTS_LOCK) {
-			val = ioread32(base + USBHS_UGCTRL_REG);
-			val |= USBHS_UGCTRL_CONNECT;
-			iowrite32(val, base + USBHS_UGCTRL_REG);
-			return 0;
-		}
-		udelay(1);
-	}
-
-	/* Timed out waiting for the PLL lock */
-	return -ETIMEDOUT;
-}
-
-/* Disable USBHS internal phy */
-static int __rcar_gen2_usbhs_phy_disable(void __iomem *base)
-{
-	u32 val;
-
-	/* USBHS PHY power off */
-	val = ioread32(base + USBHS_UGCTRL_REG);
-	val &= ~USBHS_UGCTRL_CONNECT;
-	iowrite32(val, base + USBHS_UGCTRL_REG);
-
-	val = ioread16(base + USBHS_LPSTS_REG);
-	val &= ~USBHS_LPSTS_SUSPM;
-	iowrite16(val, base + USBHS_LPSTS_REG);
-
-	val = ioread32(base + USBHS_UGCTRL_REG);
-	val |= USBHS_UGCTRL_PLLRESET;
-	iowrite32(val, base + USBHS_UGCTRL_REG);
-	return 0;
-}
-
-/* Setup USB channels */
-static void __rcar_gen2_usb_phy_init(struct rcar_gen2_usb_phy_priv *priv)
-{
-	u32 val;
-
-	clk_prepare_enable(priv->clk);
-
-	/* Set USB channels in the USBHS UGCTRL2 register */
-	val = ioread32(priv->base + USBHS_UGCTRL2_REG);
-	val &= ~(USBHS_UGCTRL2_USB0_HS | USBHS_UGCTRL2_USB2_SS);
-	val |= priv->ugctrl2;
-	iowrite32(val, priv->base + USBHS_UGCTRL2_REG);
-}
-
-/* Shutdown USB channels */
-static void __rcar_gen2_usb_phy_shutdown(struct rcar_gen2_usb_phy_priv *priv)
-{
-	__rcar_gen2_usbhs_phy_disable(priv->base);
-	clk_disable_unprepare(priv->clk);
-}
-
-static int rcar_gen2_usb_phy_set_suspend(struct usb_phy *phy, int suspend)
-{
-	struct rcar_gen2_usb_phy_priv *priv = usb_phy_to_priv(phy);
-	unsigned long flags;
-	int retval;
-
-	spin_lock_irqsave(&priv->lock, flags);
-	retval = suspend ? __rcar_gen2_usbhs_phy_disable(priv->base) :
-			   __rcar_gen2_usbhs_phy_enable(priv->base);
-	spin_unlock_irqrestore(&priv->lock, flags);
-	return retval;
-}
-
-static int rcar_gen2_usb_phy_init(struct usb_phy *phy)
-{
-	struct rcar_gen2_usb_phy_priv *priv = usb_phy_to_priv(phy);
-	unsigned long flags;
-
-	spin_lock_irqsave(&priv->lock, flags);
-	/*
-	 * Enable the clock and setup USB channels
-	 * if it's the first user
-	 */
-	if (!priv->usecount++)
-		__rcar_gen2_usb_phy_init(priv);
-	spin_unlock_irqrestore(&priv->lock, flags);
-	return 0;
-}
-
-static void rcar_gen2_usb_phy_shutdown(struct usb_phy *phy)
-{
-	struct rcar_gen2_usb_phy_priv *priv = usb_phy_to_priv(phy);
-	unsigned long flags;
-
-	spin_lock_irqsave(&priv->lock, flags);
-	if (!priv->usecount) {
-		dev_warn(phy->dev, "Trying to disable phy with 0 usecount\n");
-		goto out;
-	}
-
-	/* Disable everything if it's the last user */
-	if (!--priv->usecount)
-		__rcar_gen2_usb_phy_shutdown(priv);
-out:
-	spin_unlock_irqrestore(&priv->lock, flags);
-}
-
-static int rcar_gen2_usb_phy_probe(struct platform_device *pdev)
-{
-	struct device *dev = &pdev->dev;
-	struct rcar_gen2_phy_platform_data *pdata;
-	struct rcar_gen2_usb_phy_priv *priv;
-	struct resource *res;
-	void __iomem *base;
-	struct clk *clk;
-	int retval;
-
-	pdata = dev_get_platdata(dev);
-	if (!pdata) {
-		dev_err(dev, "No platform data\n");
-		return -EINVAL;
-	}
-
-	clk = devm_clk_get(dev, "usbhs");
-	if (IS_ERR(clk)) {
-		dev_err(dev, "Can't get the clock\n");
-		return PTR_ERR(clk);
-	}
-
-	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
-	base = devm_ioremap_resource(dev, res);
-	if (IS_ERR(base))
-		return PTR_ERR(base);
-
-	priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL);
-	if (!priv)
-		return -ENOMEM;
-
-	spin_lock_init(&priv->lock);
-	priv->clk = clk;
-	priv->base = base;
-	priv->ugctrl2 = pdata->chan0_pci ?
-			USBHS_UGCTRL2_USB0_PCI : USBHS_UGCTRL2_USB0_HS;
-	priv->ugctrl2 |= pdata->chan2_pci ?
-			USBHS_UGCTRL2_USB2_PCI : USBHS_UGCTRL2_USB2_SS;
-	priv->phy.dev = dev;
-	priv->phy.label = dev_name(dev);
-	priv->phy.init = rcar_gen2_usb_phy_init;
-	priv->phy.shutdown = rcar_gen2_usb_phy_shutdown;
-	priv->phy.set_suspend = rcar_gen2_usb_phy_set_suspend;
-
-	retval = usb_add_phy_dev(&priv->phy);
-	if (retval < 0) {
-		dev_err(dev, "Failed to add USB phy\n");
-		return retval;
-	}
-
-	platform_set_drvdata(pdev, priv);
-
-	return retval;
-}
-
-static int rcar_gen2_usb_phy_remove(struct platform_device *pdev)
-{
-	struct rcar_gen2_usb_phy_priv *priv = platform_get_drvdata(pdev);
-
-	usb_remove_phy(&priv->phy);
-
-	return 0;
-}
-
-static struct platform_driver rcar_gen2_usb_phy_driver = {
-	.driver = {
-		.name = "usb_phy_rcar_gen2",
-	},
-	.probe = rcar_gen2_usb_phy_probe,
-	.remove = rcar_gen2_usb_phy_remove,
-};
-
-module_platform_driver(rcar_gen2_usb_phy_driver);
-
-MODULE_LICENSE("GPL v2");
-MODULE_DESCRIPTION("Renesas R-Car Gen2 USB phy");
-MODULE_AUTHOR("Valentine Barshak <valentine.barshak@cogentembedded.com>");
diff --git a/drivers/usb/phy/phy-tahvo.c b/drivers/usb/phy/phy-tahvo.c
index 2b28443d0..b40d6a87d 100644
--- a/drivers/usb/phy/phy-tahvo.c
+++ b/drivers/usb/phy/phy-tahvo.c
@@ -60,10 +60,11 @@ struct tahvo_usb {
 	struct extcon_dev	extcon;
 };
 
-static const char *tahvo_cable[] = {
-	"USB-HOST",
-	"USB",
-	NULL,
+static const unsigned int tahvo_cable[] = {
+	EXTCON_USB,
+	EXTCON_USB_HOST,
+
+	EXTCON_NONE,
 };
 
 static ssize_t vbus_state_show(struct device *device,
diff --git a/drivers/usb/phy/phy.c b/drivers/usb/phy/phy.c
index d1cd6b50f..98f75d284 100644
--- a/drivers/usb/phy/phy.c
+++ b/drivers/usb/phy/phy.c
@@ -22,6 +22,11 @@ static LIST_HEAD(phy_list);
 static LIST_HEAD(phy_bind_list);
 static DEFINE_SPINLOCK(phy_lock);
 
+struct phy_devm {
+	struct usb_phy *phy;
+	struct notifier_block *nb;
+};
+
 static struct usb_phy *__usb_find_phy(struct list_head *list,
 	enum usb_phy_type type)
 {
@@ -79,6 +84,15 @@ static void devm_usb_phy_release(struct device *dev, void *res)
 	usb_put_phy(phy);
 }
 
+static void devm_usb_phy_release2(struct device *dev, void *_res)
+{
+	struct phy_devm *res = _res;
+
+	if (res->nb)
+		usb_unregister_notifier(res->phy, res->nb);
+	usb_put_phy(res->phy);
+}
+
 static int devm_usb_phy_match(struct device *dev, void *res, void *match_data)
 {
 	struct usb_phy **phy = res;
@@ -153,40 +167,30 @@ err0:
 EXPORT_SYMBOL_GPL(usb_get_phy);
 
 /**
- * devm_usb_get_phy_by_phandle - find the USB PHY by phandle
+ * devm_usb_get_phy_by_node - find the USB PHY by device_node
  * @dev - device that requests this phy
- * @phandle - name of the property holding the phy phandle value
- * @index - the index of the phy
+ * @node - the device_node for the phy device.
+ * @nb - a notifier_block to register with the phy.
  *
- * Returns the phy driver associated with the given phandle value,
+ * Returns the phy driver associated with the given device_node,
  * after getting a refcount to it, -ENODEV if there is no such phy or
- * -EPROBE_DEFER if there is a phandle to the phy, but the device is
- * not yet loaded. While at that, it also associates the device with
+ * -EPROBE_DEFER if the device is not yet loaded. While at that, it
+ * also associates the device with
  * the phy using devres. On driver detach, release function is invoked
  * on the devres data, then, devres data is freed.
  *
- * For use by USB host and peripheral drivers.
+ * For use by peripheral drivers for devices related to a phy,
+ * such as a charger.
  */
-struct usb_phy *devm_usb_get_phy_by_phandle(struct device *dev,
-	const char *phandle, u8 index)
+struct  usb_phy *devm_usb_get_phy_by_node(struct device *dev,
+					  struct device_node *node,
+					  struct notifier_block *nb)
 {
-	struct usb_phy	*phy = ERR_PTR(-ENOMEM), **ptr;
+	struct usb_phy	*phy = ERR_PTR(-ENOMEM);
+	struct phy_devm	*ptr;
 	unsigned long	flags;
-	struct device_node *node;
 
-	if (!dev->of_node) {
-		dev_dbg(dev, "device does not have a device node entry\n");
-		return ERR_PTR(-EINVAL);
-	}
-
-	node = of_parse_phandle(dev->of_node, phandle, index);
-	if (!node) {
-		dev_dbg(dev, "failed to get %s phandle in %s node\n", phandle,
-			dev->of_node->full_name);
-		return ERR_PTR(-ENODEV);
-	}
-
-	ptr = devres_alloc(devm_usb_phy_release, sizeof(*ptr), GFP_KERNEL);
+	ptr = devres_alloc(devm_usb_phy_release2, sizeof(*ptr), GFP_KERNEL);
 	if (!ptr) {
 		dev_dbg(dev, "failed to allocate memory for devres\n");
 		goto err0;
@@ -205,8 +209,10 @@ struct usb_phy *devm_usb_get_phy_by_phandle(struct device *dev,
 		devres_free(ptr);
 		goto err1;
 	}
-
-	*ptr = phy;
+	if (nb)
+		usb_register_notifier(phy, nb);
+	ptr->phy = phy;
+	ptr->nb = nb;
 	devres_add(dev, ptr);
 
 	get_device(phy->dev);
@@ -215,10 +221,47 @@ err1:
 	spin_unlock_irqrestore(&phy_lock, flags);
 
 err0:
-	of_node_put(node);
 
 	return phy;
 }
+EXPORT_SYMBOL_GPL(devm_usb_get_phy_by_node);
+
+/**
+ * devm_usb_get_phy_by_phandle - find the USB PHY by phandle
+ * @dev - device that requests this phy
+ * @phandle - name of the property holding the phy phandle value
+ * @index - the index of the phy
+ *
+ * Returns the phy driver associated with the given phandle value,
+ * after getting a refcount to it, -ENODEV if there is no such phy or
+ * -EPROBE_DEFER if there is a phandle to the phy, but the device is
+ * not yet loaded. While at that, it also associates the device with
+ * the phy using devres. On driver detach, release function is invoked
+ * on the devres data, then, devres data is freed.
+ *
+ * For use by USB host and peripheral drivers.
+ */
+struct usb_phy *devm_usb_get_phy_by_phandle(struct device *dev,
+	const char *phandle, u8 index)
+{
+	struct device_node *node;
+	struct usb_phy	*phy;
+
+	if (!dev->of_node) {
+		dev_dbg(dev, "device does not have a device node entry\n");
+		return ERR_PTR(-EINVAL);
+	}
+
+	node = of_parse_phandle(dev->of_node, phandle, index);
+	if (!node) {
+		dev_dbg(dev, "failed to get %s phandle in %s node\n", phandle,
+			dev->of_node->full_name);
+		return ERR_PTR(-ENODEV);
+	}
+	phy = devm_usb_get_phy_by_node(dev, node, NULL);
+	of_node_put(node);
+	return phy;
+}
 EXPORT_SYMBOL_GPL(devm_usb_get_phy_by_phandle);
 
 /**