Merge tag 'phy-for-4.8-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/kishon/linux-phy into usb-testing

Kishon writes:

phy: for 4.8 -rc1

*) Add a new phy_ops for setting the phy mode
*) Add a new phy driver for DA8xx SoC USB PHY
*) Minor fixes and cleanups

Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>

13 files changed, 408 insertions, 36 deletions

diff --git a/Documentation/devicetree/bindings/phy/phy-da8xx-usb.txt b/Documentation/devicetree/bindings/phy/phy-da8xx-usb.txt
new file mode 100644
index 0000000..c26478b
--- /dev/null
+++ b/Documentation/devicetree/bindings/phy/phy-da8xx-usb.txt
@@ -0,0 +1,40 @@
+TI DA8xx/OMAP-L1xx/AM18xx USB PHY
+
+Required properties:
+ - compatible: must be "ti,da830-usb-phy".
+ - #phy-cells: must be 1.
+
+This device controls the PHY for both the USB 1.1 OHCI and USB 2.0 OTG
+controllers on DA8xx SoCs. Consumers of this device should use index 0 for
+the USB 2.0 phy device and index 1 for the USB 1.1 phy device.
+
+It also requires a "syscon" node with compatible = "ti,da830-cfgchip", "syscon"
+to access the CFGCHIP2 register.
+
+Example:
+
+	cfgchip: cfgchip@1417c {
+		compatible = "ti,da830-cfgchip", "syscon";
+		reg = <0x1417c 0x14>;
+	};
+
+	usb_phy: usb-phy {
+		compatible = "ti,da830-usb-phy";
+		#phy-cells = <1>;
+	};
+
+	usb20: usb@200000 {
+		compatible = "ti,da830-musb";
+		reg = <0x200000 0x1000>;
+		interrupts = <58>;
+		phys = <&usb_phy 0>;
+		phy-names = "usb-phy";
+	};
+
+	usb11: usb@225000 {
+		compatible = "ti,da830-ohci";
+		reg = <0x225000 0x1000>;
+		interrupts = <59>;
+		phys = <&usb_phy 1>;
+		phy-names = "usb-phy";
+	};
diff --git a/Documentation/devicetree/bindings/phy/rockchip-usb-phy.txt b/Documentation/devicetree/bindings/phy/rockchip-usb-phy.txt
index 68498d5..cc6be96 100644
--- a/Documentation/devicetree/bindings/phy/rockchip-usb-phy.txt
+++ b/Documentation/devicetree/bindings/phy/rockchip-usb-phy.txt
@@ -5,11 +5,13 @@ Required properties:
      "rockchip,rk3066a-usb-phy"
      "rockchip,rk3188-usb-phy"
      "rockchip,rk3288-usb-phy"
- - rockchip,grf : phandle to the syscon managing the "general
-   register files"
  - #address-cells: should be 1
  - #size-cells: should be 0
 
+Deprecated properties:
+ - rockchip,grf : phandle to the syscon managing the "general
+   register files" - phy should be a child of the GRF instead
+
 Sub-nodes:
 Each PHY should be represented as a sub-node.
 
@@ -28,14 +30,19 @@ Optional Properties:
 
 Example:
 
-usbphy: phy {
-	compatible = "rockchip,rk3288-usb-phy";
-	rockchip,grf = <&grf>;
-	#address-cells = <1>;
-	#size-cells = <0>;
+grf: syscon@ff770000 {
+	compatible = "rockchip,rk3288-grf", "syscon", "simple-mfd";
+
+...
+
+	usbphy: phy {
+		compatible = "rockchip,rk3288-usb-phy";
+		#address-cells = <1>;
+		#size-cells = <0>;
 
-	usbphy0: usb-phy0 {
-		#phy-cells = <0>;
-		reg = <0x320>;
+		usbphy0: usb-phy0 {
+			#phy-cells = <0>;
+			reg = <0x320>;
+		};
 	};
 };
diff --git a/drivers/phy/Kconfig b/drivers/phy/Kconfig
index 8d1cfb7..cc0b695 100644
--- a/drivers/phy/Kconfig
+++ b/drivers/phy/Kconfig
@@ -44,6 +44,16 @@ config ARMADA375_USBCLUSTER_PHY
 	depends on OF && HAS_IOMEM
 	select GENERIC_PHY
 
+config PHY_DA8XX_USB
+	tristate "TI DA8xx USB PHY Driver"
+	depends on ARCH_DAVINCI_DA8XX
+	select GENERIC_PHY
+	select MFD_SYSCON
+	help
+	  Enable this to support the USB PHY on DA8xx SoCs.
+
+	  This driver controls both the USB 1.1 PHY and the USB 2.0 PHY.
+
 config PHY_DM816X_USB
 	tristate "TI dm816x USB PHY driver"
 	depends on ARCH_OMAP2PLUS
diff --git a/drivers/phy/Makefile b/drivers/phy/Makefile
index 9c3e73c..fa8480e 100644
--- a/drivers/phy/Makefile
+++ b/drivers/phy/Makefile
@@ -6,6 +6,7 @@ obj-$(CONFIG_GENERIC_PHY)		+= phy-core.o
 obj-$(CONFIG_PHY_BCM_NS_USB2)		+= phy-bcm-ns-usb2.o
 obj-$(CONFIG_PHY_BERLIN_USB)		+= phy-berlin-usb.o
 obj-$(CONFIG_PHY_BERLIN_SATA)		+= phy-berlin-sata.o
+obj-$(CONFIG_PHY_DA8XX_USB)		+= phy-da8xx-usb.o
 obj-$(CONFIG_PHY_DM816X_USB)		+= phy-dm816x-usb.o
 obj-$(CONFIG_ARMADA375_USBCLUSTER_PHY)	+= phy-armada375-usb2.o
 obj-$(CONFIG_BCM_KONA_USB2_PHY)		+= phy-bcm-kona-usb2.o
diff --git a/drivers/phy/phy-core.c b/drivers/phy/phy-core.c
index b72e9a3..8eca906 100644
--- a/drivers/phy/phy-core.c
+++ b/drivers/phy/phy-core.c
@@ -342,6 +342,21 @@ int phy_power_off(struct phy *phy)
 }
 EXPORT_SYMBOL_GPL(phy_power_off);
 
+int phy_set_mode(struct phy *phy, enum phy_mode mode)
+{
+	int ret;
+
+	if (!phy || !phy->ops->set_mode)
+		return 0;
+
+	mutex_lock(&phy->mutex);
+	ret = phy->ops->set_mode(phy, mode);
+	mutex_unlock(&phy->mutex);
+
+	return ret;
+}
+EXPORT_SYMBOL_GPL(phy_set_mode);
+
 /**
  * _of_phy_get() - lookup and obtain a reference to a phy by phandle
  * @np: device_node for which to get the phy
diff --git a/drivers/phy/phy-da8xx-usb.c b/drivers/phy/phy-da8xx-usb.c
new file mode 100644
index 0000000..b2e59b6
--- /dev/null
+++ b/drivers/phy/phy-da8xx-usb.c
@@ -0,0 +1,245 @@
+/*
+ * phy-da8xx-usb - TI DaVinci DA8xx USB PHY driver
+ *
+ * Copyright (C) 2016 David Lechner <david@lechnology.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; version 2 of the License.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ */
+
+#include <linux/clk.h>
+#include <linux/io.h>
+#include <linux/of.h>
+#include <linux/mfd/da8xx-cfgchip.h>
+#include <linux/mfd/syscon.h>
+#include <linux/module.h>
+#include <linux/phy/phy.h>
+#include <linux/platform_device.h>
+#include <linux/regmap.h>
+
+struct da8xx_usb_phy {
+	struct phy_provider	*phy_provider;
+	struct phy		*usb11_phy;
+	struct phy		*usb20_phy;
+	struct clk		*usb11_clk;
+	struct clk		*usb20_clk;
+	struct regmap		*regmap;
+};
+
+static int da8xx_usb11_phy_power_on(struct phy *phy)
+{
+	struct da8xx_usb_phy *d_phy = phy_get_drvdata(phy);
+	int ret;
+
+	ret = clk_prepare_enable(d_phy->usb11_clk);
+	if (ret)
+		return ret;
+
+	regmap_write_bits(d_phy->regmap, CFGCHIP(2), CFGCHIP2_USB1SUSPENDM,
+			  CFGCHIP2_USB1SUSPENDM);
+
+	return 0;
+}
+
+static int da8xx_usb11_phy_power_off(struct phy *phy)
+{
+	struct da8xx_usb_phy *d_phy = phy_get_drvdata(phy);
+
+	regmap_write_bits(d_phy->regmap, CFGCHIP(2), CFGCHIP2_USB1SUSPENDM, 0);
+
+	clk_disable_unprepare(d_phy->usb11_clk);
+
+	return 0;
+}
+
+static const struct phy_ops da8xx_usb11_phy_ops = {
+	.power_on	= da8xx_usb11_phy_power_on,
+	.power_off	= da8xx_usb11_phy_power_off,
+	.owner		= THIS_MODULE,
+};
+
+static int da8xx_usb20_phy_power_on(struct phy *phy)
+{
+	struct da8xx_usb_phy *d_phy = phy_get_drvdata(phy);
+	int ret;
+
+	ret = clk_prepare_enable(d_phy->usb20_clk);
+	if (ret)
+		return ret;
+
+	regmap_write_bits(d_phy->regmap, CFGCHIP(2), CFGCHIP2_OTGPWRDN, 0);
+
+	return 0;
+}
+
+static int da8xx_usb20_phy_power_off(struct phy *phy)
+{
+	struct da8xx_usb_phy *d_phy = phy_get_drvdata(phy);
+
+	regmap_write_bits(d_phy->regmap, CFGCHIP(2), CFGCHIP2_OTGPWRDN,
+			  CFGCHIP2_OTGPWRDN);
+
+	clk_disable_unprepare(d_phy->usb20_clk);
+
+	return 0;
+}
+
+static int da8xx_usb20_phy_set_mode(struct phy *phy, enum phy_mode mode)
+{
+	struct da8xx_usb_phy *d_phy = phy_get_drvdata(phy);
+	u32 val;
+
+	switch (mode) {
+	case PHY_MODE_USB_HOST:		/* Force VBUS valid, ID = 0 */
+		val = CFGCHIP2_OTGMODE_FORCE_HOST;
+		break;
+	case PHY_MODE_USB_DEVICE:	/* Force VBUS valid, ID = 1 */
+		val = CFGCHIP2_OTGMODE_FORCE_DEVICE;
+		break;
+	case PHY_MODE_USB_OTG:	/* Don't override the VBUS/ID comparators */
+		val = CFGCHIP2_OTGMODE_NO_OVERRIDE;
+		break;
+	default:
+		return -EINVAL;
+	}
+
+	regmap_write_bits(d_phy->regmap, CFGCHIP(2), CFGCHIP2_OTGMODE_MASK,
+			  val);
+
+	return 0;
+}
+
+static const struct phy_ops da8xx_usb20_phy_ops = {
+	.power_on	= da8xx_usb20_phy_power_on,
+	.power_off	= da8xx_usb20_phy_power_off,
+	.set_mode	= da8xx_usb20_phy_set_mode,
+	.owner		= THIS_MODULE,
+};
+
+static struct phy *da8xx_usb_phy_of_xlate(struct device *dev,
+					 struct of_phandle_args *args)
+{
+	struct da8xx_usb_phy *d_phy = dev_get_drvdata(dev);
+
+	if (!d_phy)
+		return ERR_PTR(-ENODEV);
+
+	switch (args->args[0]) {
+	case 0:
+		return d_phy->usb20_phy;
+	case 1:
+		return d_phy->usb11_phy;
+	default:
+		return ERR_PTR(-EINVAL);
+	}
+}
+
+static int da8xx_usb_phy_probe(struct platform_device *pdev)
+{
+	struct device		*dev = &pdev->dev;
+	struct device_node	*node = dev->of_node;
+	struct da8xx_usb_phy	*d_phy;
+
+	d_phy = devm_kzalloc(dev, sizeof(*d_phy), GFP_KERNEL);
+	if (!d_phy)
+		return -ENOMEM;
+
+	if (node)
+		d_phy->regmap = syscon_regmap_lookup_by_compatible(
+							"ti,da830-cfgchip");
+	else
+		d_phy->regmap = syscon_regmap_lookup_by_pdevname("syscon.0");
+	if (IS_ERR(d_phy->regmap)) {
+		dev_err(dev, "Failed to get syscon\n");
+		return PTR_ERR(d_phy->regmap);
+	}
+
+	d_phy->usb11_clk = devm_clk_get(dev, "usb11_phy");
+	if (IS_ERR(d_phy->usb11_clk)) {
+		dev_err(dev, "Failed to get usb11_phy clock\n");
+		return PTR_ERR(d_phy->usb11_clk);
+	}
+
+	d_phy->usb20_clk = devm_clk_get(dev, "usb20_phy");
+	if (IS_ERR(d_phy->usb20_clk)) {
+		dev_err(dev, "Failed to get usb20_phy clock\n");
+		return PTR_ERR(d_phy->usb20_clk);
+	}
+
+	d_phy->usb11_phy = devm_phy_create(dev, node, &da8xx_usb11_phy_ops);
+	if (IS_ERR(d_phy->usb11_phy)) {
+		dev_err(dev, "Failed to create usb11 phy\n");
+		return PTR_ERR(d_phy->usb11_phy);
+	}
+
+	d_phy->usb20_phy = devm_phy_create(dev, node, &da8xx_usb20_phy_ops);
+	if (IS_ERR(d_phy->usb20_phy)) {
+		dev_err(dev, "Failed to create usb20 phy\n");
+		return PTR_ERR(d_phy->usb20_phy);
+	}
+
+	platform_set_drvdata(pdev, d_phy);
+	phy_set_drvdata(d_phy->usb11_phy, d_phy);
+	phy_set_drvdata(d_phy->usb20_phy, d_phy);
+
+	if (node) {
+		d_phy->phy_provider = devm_of_phy_provider_register(dev,
+							da8xx_usb_phy_of_xlate);
+		if (IS_ERR(d_phy->phy_provider)) {
+			dev_err(dev, "Failed to create phy provider\n");
+			return PTR_ERR(d_phy->phy_provider);
+		}
+	} else {
+		int ret;
+
+		ret = phy_create_lookup(d_phy->usb11_phy, "usb-phy", "ohci.0");
+		if (ret)
+			dev_warn(dev, "Failed to create usb11 phy lookup\n");
+		ret = phy_create_lookup(d_phy->usb20_phy, "usb-phy",
+					"musb-da8xx");
+		if (ret)
+			dev_warn(dev, "Failed to create usb20 phy lookup\n");
+	}
+
+	return 0;
+}
+
+static int da8xx_usb_phy_remove(struct platform_device *pdev)
+{
+	struct da8xx_usb_phy *d_phy = platform_get_drvdata(pdev);
+
+	if (!pdev->dev.of_node) {
+		phy_remove_lookup(d_phy->usb20_phy, "usb-phy", "musb-da8xx");
+		phy_remove_lookup(d_phy->usb11_phy, "usb-phy", "ohci.0");
+	}
+
+	return 0;
+}
+
+static const struct of_device_id da8xx_usb_phy_ids[] = {
+	{ .compatible = "ti,da830-usb-phy" },
+	{ }
+};
+MODULE_DEVICE_TABLE(of, da8xx_usb_phy_ids);
+
+static struct platform_driver da8xx_usb_phy_driver = {
+	.probe	= da8xx_usb_phy_probe,
+	.remove	= da8xx_usb_phy_remove,
+	.driver	= {
+		.name	= "da8xx-usb-phy",
+		.of_match_table = da8xx_usb_phy_ids,
+	},
+};
+
+module_platform_driver(da8xx_usb_phy_driver);
+
+MODULE_ALIAS("platform:da8xx-usb-phy");
+MODULE_AUTHOR("David Lechner <david@lechnology.com>");
+MODULE_DESCRIPTION("TI DA8xx USB PHY driver");
+MODULE_LICENSE("GPL v2");
diff --git a/drivers/phy/phy-qcom-ufs-qmp-14nm.c b/drivers/phy/phy-qcom-ufs-qmp-14nm.c
index 56631e7..6ee5149 100644
--- a/drivers/phy/phy-qcom-ufs-qmp-14nm.c
+++ b/drivers/phy/phy-qcom-ufs-qmp-14nm.c
@@ -140,7 +140,6 @@ static int ufs_qcom_phy_qmp_14nm_probe(struct platform_device *pdev)
 
 	phy = devm_kzalloc(dev, sizeof(*phy), GFP_KERNEL);
 	if (!phy) {
-		dev_err(dev, "%s: failed to allocate phy\n", __func__);
 		err = -ENOMEM;
 		goto out;
 	}
diff --git a/drivers/phy/phy-qcom-ufs-qmp-20nm.c b/drivers/phy/phy-qcom-ufs-qmp-20nm.c
index b16ea77..770087a 100644
--- a/drivers/phy/phy-qcom-ufs-qmp-20nm.c
+++ b/drivers/phy/phy-qcom-ufs-qmp-20nm.c
@@ -196,7 +196,6 @@ static int ufs_qcom_phy_qmp_20nm_probe(struct platform_device *pdev)
 
 	phy = devm_kzalloc(dev, sizeof(*phy), GFP_KERNEL);
 	if (!phy) {
-		dev_err(dev, "%s: failed to allocate phy\n", __func__);
 		err = -ENOMEM;
 		goto out;
 	}
diff --git a/drivers/phy/phy-rcar-gen3-usb2.c b/drivers/phy/phy-rcar-gen3-usb2.c
index 4be3f5d..31156c9 100644
--- a/drivers/phy/phy-rcar-gen3-usb2.c
+++ b/drivers/phy/phy-rcar-gen3-usb2.c
@@ -21,6 +21,7 @@
 #include <linux/phy/phy.h>
 #include <linux/platform_device.h>
 #include <linux/regulator/consumer.h>
+#include <linux/workqueue.h>
 
 /******* USB2.0 Host registers (original offset is +0x200) *******/
 #define USB2_INT_ENABLE		0x000
@@ -81,9 +82,25 @@ struct rcar_gen3_chan {
 	struct extcon_dev *extcon;
 	struct phy *phy;
 	struct regulator *vbus;
+	struct work_struct work;
+	bool extcon_host;
 	bool has_otg;
 };
 
+static void rcar_gen3_phy_usb2_work(struct work_struct *work)
+{
+	struct rcar_gen3_chan *ch = container_of(work, struct rcar_gen3_chan,
+						 work);
+
+	if (ch->extcon_host) {
+		extcon_set_cable_state_(ch->extcon, EXTCON_USB_HOST, true);
+		extcon_set_cable_state_(ch->extcon, EXTCON_USB, false);
+	} else {
+		extcon_set_cable_state_(ch->extcon, EXTCON_USB_HOST, false);
+		extcon_set_cable_state_(ch->extcon, EXTCON_USB, true);
+	}
+}
+
 static void rcar_gen3_set_host_mode(struct rcar_gen3_chan *ch, int host)
 {
 	void __iomem *usb2_base = ch->base;
@@ -130,8 +147,8 @@ static void rcar_gen3_init_for_host(struct rcar_gen3_chan *ch)
 	rcar_gen3_set_host_mode(ch, 1);
 	rcar_gen3_enable_vbus_ctrl(ch, 1);
 
-	extcon_set_cable_state_(ch->extcon, EXTCON_USB_HOST, true);
-	extcon_set_cable_state_(ch->extcon, EXTCON_USB, false);
+	ch->extcon_host = true;
+	schedule_work(&ch->work);
 }
 
 static void rcar_gen3_init_for_peri(struct rcar_gen3_chan *ch)
@@ -140,8 +157,8 @@ static void rcar_gen3_init_for_peri(struct rcar_gen3_chan *ch)
 	rcar_gen3_set_host_mode(ch, 0);
 	rcar_gen3_enable_vbus_ctrl(ch, 0);
 
-	extcon_set_cable_state_(ch->extcon, EXTCON_USB_HOST, false);
-	extcon_set_cable_state_(ch->extcon, EXTCON_USB, true);
+	ch->extcon_host = false;
+	schedule_work(&ch->work);
 }
 
 static bool rcar_gen3_check_id(struct rcar_gen3_chan *ch)
@@ -301,6 +318,7 @@ static int rcar_gen3_phy_usb2_probe(struct platform_device *pdev)
 	if (irq >= 0) {
 		int ret;
 
+		INIT_WORK(&channel->work, rcar_gen3_phy_usb2_work);
 		irq = devm_request_irq(dev, irq, rcar_gen3_phy_usb2_irq,
 				       IRQF_SHARED, dev_name(dev), channel);
 		if (irq < 0)
diff --git a/drivers/phy/phy-rockchip-usb.c b/drivers/phy/phy-rockchip-usb.c
index d60b149..2a7381f 100644
--- a/drivers/phy/phy-rockchip-usb.c
+++ b/drivers/phy/phy-rockchip-usb.c
@@ -236,9 +236,10 @@ static int rockchip_usb_phy_init(struct rockchip_usb_phy_base *base,
 			goto err_clk_prov;
 	}
 
-	err = devm_add_action(base->dev, rockchip_usb_phy_action, rk_phy);
+	err = devm_add_action_or_reset(base->dev, rockchip_usb_phy_action,
+				       rk_phy);
 	if (err)
-		goto err_devm_action;
+		return err;
 
 	rk_phy->phy = devm_phy_create(base->dev, child, &ops);
 	if (IS_ERR(rk_phy->phy)) {
@@ -256,9 +257,6 @@ static int rockchip_usb_phy_init(struct rockchip_usb_phy_base *base,
 	else
 		return rockchip_usb_phy_power(rk_phy, 1);
 
-err_devm_action:
-	if (!rk_phy->uart_enabled)
-		of_clk_del_provider(child);
 err_clk_prov:
 	if (!rk_phy->uart_enabled)
 		clk_unregister(rk_phy->clk480m);
@@ -397,8 +395,13 @@ static int rockchip_usb_phy_probe(struct platform_device *pdev)
 	phy_base->pdata = match->data;
 
 	phy_base->dev = dev;
-	phy_base->reg_base = syscon_regmap_lookup_by_phandle(dev->of_node,
-							     "rockchip,grf");
+	phy_base->reg_base = ERR_PTR(-ENODEV);
+	if (dev->parent && dev->parent->of_node)
+		phy_base->reg_base = syscon_node_to_regmap(
+						dev->parent->of_node);
+	if (IS_ERR(phy_base->reg_base))
+		phy_base->reg_base = syscon_regmap_lookup_by_phandle(
+						dev->of_node, "rockchip,grf");
 	if (IS_ERR(phy_base->reg_base)) {
 		dev_err(&pdev->dev, "Missing rockchip,grf property\n");
 		return PTR_ERR(phy_base->reg_base);
@@ -463,7 +466,11 @@ static int __init rockchip_init_usb_uart(void)
 		return -ENOTSUPP;
 	}
 
-	grf = syscon_regmap_lookup_by_phandle(np, "rockchip,grf");
+	grf = ERR_PTR(-ENODEV);
+	if (np->parent)
+		grf = syscon_node_to_regmap(np->parent);
+	if (IS_ERR(grf))
+		grf = syscon_regmap_lookup_by_phandle(np, "rockchip,grf");
 	if (IS_ERR(grf)) {
 		pr_err("%s: Missing rockchip,grf property, %lu\n",
 		       __func__, PTR_ERR(grf));
diff --git a/drivers/phy/phy-sun4i-usb.c b/drivers/phy/phy-sun4i-usb.c
index de3101f..0a45bc6 100644
--- a/drivers/phy/phy-sun4i-usb.c
+++ b/drivers/phy/phy-sun4i-usb.c
@@ -94,6 +94,7 @@
 
 enum sun4i_usb_phy_type {
 	sun4i_a10_phy,
+	sun6i_a31_phy,
 	sun8i_a33_phy,
 	sun8i_h3_phy,
 };
@@ -122,7 +123,6 @@ struct sun4i_usb_phy_data {
 	/* phy0 / otg related variables */
 	struct extcon_dev *extcon;
 	bool phy0_init;
-	bool phy0_poll;
 	struct gpio_desc *id_det_gpio;
 	struct gpio_desc *vbus_det_gpio;
 	struct power_supply *vbus_power_supply;
@@ -343,6 +343,24 @@ static bool sun4i_usb_phy0_have_vbus_det(struct sun4i_usb_phy_data *data)
 	return data->vbus_det_gpio || data->vbus_power_supply;
 }
 
+static bool sun4i_usb_phy0_poll(struct sun4i_usb_phy_data *data)
+{
+	if ((data->id_det_gpio && data->id_det_irq <= 0) ||
+	    (data->vbus_det_gpio && data->vbus_det_irq <= 0))
+		return true;
+
+	/*
+	 * The A31 companion pmic (axp221) does not generate vbus change
+	 * interrupts when the board is driving vbus, so we must poll
+	 * when using the pmic for vbus-det _and_ we're driving vbus.
+	 */
+	if (data->cfg->type == sun6i_a31_phy &&
+	    data->vbus_power_supply && data->phys[0].regulator_on)
+		return true;
+
+	return false;
+}
+
 static int sun4i_usb_phy_power_on(struct phy *_phy)
 {
 	struct sun4i_usb_phy *phy = phy_get_drvdata(_phy);
@@ -364,7 +382,7 @@ static int sun4i_usb_phy_power_on(struct phy *_phy)
 	phy->regulator_on = true;
 
 	/* We must report Vbus high within OTG_TIME_A_WAIT_VRISE msec. */
-	if (phy->index == 0 && data->vbus_det_gpio && data->phy0_poll)
+	if (phy->index == 0 && sun4i_usb_phy0_poll(data))
 		mod_delayed_work(system_wq, &data->detect, DEBOUNCE_TIME);
 
 	return 0;
@@ -385,7 +403,7 @@ static int sun4i_usb_phy_power_off(struct phy *_phy)
 	 * phy0 vbus typically slowly discharges, sometimes this causes the
 	 * Vbus gpio to not trigger an edge irq on Vbus off, so force a rescan.
 	 */
-	if (phy->index == 0 && data->vbus_det_gpio && !data->phy0_poll)
+	if (phy->index == 0 && !sun4i_usb_phy0_poll(data))
 		mod_delayed_work(system_wq, &data->detect, POLL_TIME);
 
 	return 0;
@@ -468,7 +486,7 @@ static void sun4i_usb_phy0_id_vbus_det_scan(struct work_struct *work)
 	if (vbus_notify)
 		extcon_set_cable_state_(data->extcon, EXTCON_USB, vbus_det);
 
-	if (data->phy0_poll)
+	if (sun4i_usb_phy0_poll(data))
 		queue_delayed_work(system_wq, &data->detect, POLL_TIME);
 }
 
@@ -644,11 +662,6 @@ static int sun4i_usb_phy_probe(struct platform_device *pdev)
 	}
 
 	data->id_det_irq = gpiod_to_irq(data->id_det_gpio);
-	data->vbus_det_irq = gpiod_to_irq(data->vbus_det_gpio);
-	if ((data->id_det_gpio && data->id_det_irq <= 0) ||
-	    (data->vbus_det_gpio && data->vbus_det_irq <= 0))
-		data->phy0_poll = true;
-
 	if (data->id_det_irq > 0) {
 		ret = devm_request_irq(dev, data->id_det_irq,
 				sun4i_usb_phy0_id_vbus_det_irq,
@@ -660,6 +673,7 @@ static int sun4i_usb_phy_probe(struct platform_device *pdev)
 		}
 	}
 
+	data->vbus_det_irq = gpiod_to_irq(data->vbus_det_gpio);
 	if (data->vbus_det_irq > 0) {
 		ret = devm_request_irq(dev, data->vbus_det_irq,
 				sun4i_usb_phy0_id_vbus_det_irq,
@@ -711,7 +725,7 @@ static const struct sun4i_usb_phy_cfg sun5i_a13_cfg = {
 
 static const struct sun4i_usb_phy_cfg sun6i_a31_cfg = {
 	.num_phys = 3,
-	.type = sun4i_a10_phy,
+	.type = sun6i_a31_phy,
 	.disc_thresh = 3,
 	.phyctl_offset = REG_PHYCTL_A10,
 	.dedicated_clocks = true,
diff --git a/drivers/phy/phy-xgene.c b/drivers/phy/phy-xgene.c
index 385362e..ae266e0 100644
--- a/drivers/phy/phy-xgene.c
+++ b/drivers/phy/phy-xgene.c
@@ -518,7 +518,7 @@ enum clk_type_t {
 	CLK_INT_SING = 2,	/* Internal single ended */
 };
 
-enum phy_mode {
+enum xgene_phy_mode {
 	MODE_SATA	= 0,	/* List them for simple reference */
 	MODE_SGMII	= 1,
 	MODE_PCIE	= 2,
@@ -542,7 +542,7 @@ struct xgene_sata_override_param {
 struct xgene_phy_ctx {
 	struct device *dev;
 	struct phy *phy;
-	enum phy_mode mode;		/* Mode of operation */
+	enum xgene_phy_mode mode;		/* Mode of operation */
 	enum clk_type_t clk_type;	/* Input clock selection */
 	void __iomem *sds_base;		/* PHY CSR base addr */
 	struct clk *clk;		/* Optional clock */
diff --git a/include/linux/phy/phy.h b/include/linux/phy/phy.h
index a810f2a..f08b672 100644
--- a/include/linux/phy/phy.h
+++ b/include/linux/phy/phy.h
@@ -22,12 +22,20 @@
 
 struct phy;
 
+enum phy_mode {
+	PHY_MODE_INVALID,
+	PHY_MODE_USB_HOST,
+	PHY_MODE_USB_DEVICE,
+	PHY_MODE_USB_OTG,
+};
+
 /**
  * struct phy_ops - set of function pointers for performing phy operations
  * @init: operation to be performed for initializing phy
  * @exit: operation to be performed while exiting
  * @power_on: powering on the phy
  * @power_off: powering off the phy
+ * @set_mode: set the mode of the phy
  * @owner: the module owner containing the ops
  */
 struct phy_ops {
@@ -35,6 +43,7 @@ struct phy_ops {
 	int	(*exit)(struct phy *phy);
 	int	(*power_on)(struct phy *phy);
 	int	(*power_off)(struct phy *phy);
+	int	(*set_mode)(struct phy *phy, enum phy_mode mode);
 	struct module *owner;
 };
 
@@ -126,6 +135,7 @@ int phy_init(struct phy *phy);
 int phy_exit(struct phy *phy);
 int phy_power_on(struct phy *phy);
 int phy_power_off(struct phy *phy);
+int phy_set_mode(struct phy *phy, enum phy_mode mode);
 static inline int phy_get_bus_width(struct phy *phy)
 {
 	return phy->attrs.bus_width;
@@ -233,6 +243,13 @@ static inline int phy_power_off(struct phy *phy)
 	return -ENOSYS;
 }
 
+static inline int phy_set_mode(struct phy *phy, enum phy_mode mode)
+{
+	if (!phy)
+		return 0;
+	return -ENOSYS;
+}
+
 static inline int phy_get_bus_width(struct phy *phy)
 {
 	return -ENOSYS;