Merge tag 'tegra-for-3.9-soc-usb' of git://git.kernel.org/pub/scm/linux/kernel/git/swarren/linux-tegra into next/soc

From Stephen Warren:
ARM: tegra: USB driver cleanup

The Tegra USB driver has a number of issues:

1) The PHY driver isn't a true platform device, and doesn't implement
   the standard USB PHY API.

2) struct device instance numbers were used to make decisions in the
   driver, rather than being parameterized by DT or platform data.

This pull request solves issue (2), and lays the groundwork for solving
issue (1). The work on issue (1) involved introducing new DT nodes for
the USB PHYs, which in turn interacted with the Tegra common clock
framework changes, due to the move of clock lookups into device tree.
Hence, these USB driver changes are taken through the Tegra tree with
acks from USB maintainers.

This pull request is based on the previous pull request, with tag
tegra-for-3.9-soc-ccf.

* tag 'tegra-for-3.9-soc-usb' of git://git.kernel.org/pub/scm/linux/kernel/git/swarren/linux-tegra:
  usb: host: tegra: make use of PHY pointer of HCD
  ARM: tegra: Add reset GPIO information to PHY DT node
  usb: host: tegra: don't touch EMC clock
  usb: add APIs to access host registers from Tegra PHY
  USB: PHY: tegra: Get rid of instance number to differentiate PHY type
  USB: PHY: tegra: get rid of instance number to differentiate legacy controller
  ARM: tegra: add clocks properties to USB PHY nodes
  ARM: tegra: add DT nodes for Tegra USB PHY
  usb: phy: remove unused APIs from Tegra PHY.
  usb: host: tegra: Resetting PORT0 based on information received via DT.
  ARM: tegra: Add new DT property to USB node.
  usb: phy: use kzalloc to allocate struct tegra_usb_phy
  ARM: tegra: remove USB address related macros from iomap.h

13 files changed, 191 insertions, 138 deletions

diff --git a/Documentation/devicetree/bindings/usb/nvidia,tegra20-ehci.txt b/Documentation/devicetree/bindings/usb/nvidia,tegra20-ehci.txt
index e9b005d..34c9528 100644
--- a/Documentation/devicetree/bindings/usb/nvidia,tegra20-ehci.txt
+++ b/Documentation/devicetree/bindings/usb/nvidia,tegra20-ehci.txt
@@ -11,6 +11,7 @@ Required properties :
  - phy_type : Should be one of "ulpi" or "utmi".
  - nvidia,vbus-gpio : If present, specifies a gpio that needs to be
    activated for the bus to be powered.
+ - nvidia,phy : phandle of the PHY instance, the controller is connected to.
 
 Required properties for phy_type == ulpi:
   - nvidia,phy-reset-gpio : The GPIO used to reset the PHY.
@@ -27,3 +28,5 @@ Optional properties:
     registers are accessed through the APB_MISC base address instead of
     the USB controller. Since this is a legacy issue it probably does not
     warrant a compatible string of its own.
+  - nvidia,needs-double-reset : boolean is to be set for some of the Tegra2
+    USB ports, which need reset twice due to hardware issues.
diff --git a/Documentation/devicetree/bindings/usb/nvidia,tegra20-usb-phy.txt b/Documentation/devicetree/bindings/usb/nvidia,tegra20-usb-phy.txt
new file mode 100644
index 0000000..6bdaba2
--- /dev/null
+++ b/Documentation/devicetree/bindings/usb/nvidia,tegra20-usb-phy.txt
@@ -0,0 +1,17 @@
+Tegra SOC USB PHY
+
+The device node for Tegra SOC USB PHY:
+
+Required properties :
+ - compatible : Should be "nvidia,tegra20-usb-phy".
+ - reg : Address and length of the register set for the USB PHY interface.
+ - phy_type : Should be one of "ulpi" or "utmi".
+
+Required properties for phy_type == ulpi:
+  - nvidia,phy-reset-gpio : The GPIO used to reset the PHY.
+
+Optional properties:
+  - nvidia,has-legacy-mode : boolean indicates whether this controller can
+    operate in legacy mode (as APX 2500 / 2600). In legacy mode some
+    registers are accessed through the APB_MISC base address instead of
+    the USB controller.
\ No newline at end of file
diff --git a/arch/arm/boot/dts/tegra20-harmony.dts b/arch/arm/boot/dts/tegra20-harmony.dts
index 43eb72a..2b41697 100644
--- a/arch/arm/boot/dts/tegra20-harmony.dts
+++ b/arch/arm/boot/dts/tegra20-harmony.dts
@@ -432,6 +432,10 @@
 		status = "okay";
 	};
 
+	usb-phy@c5004400 {
+		nvidia,phy-reset-gpio = <&gpio 169 0>; /* gpio PV1 */
+	};
+
 	sdhci@c8000200 {
 		status = "okay";
 		cd-gpios = <&gpio 69 0>; /* gpio PI5 */
diff --git a/arch/arm/boot/dts/tegra20-paz00.dts b/arch/arm/boot/dts/tegra20-paz00.dts
index a965fe9..11b30db 100644
--- a/arch/arm/boot/dts/tegra20-paz00.dts
+++ b/arch/arm/boot/dts/tegra20-paz00.dts
@@ -420,6 +420,10 @@
 		status = "okay";
 	};
 
+	usb-phy@c5004400 {
+		nvidia,phy-reset-gpio = <&gpio 168 0>; /* gpio PV0 */
+	};
+
 	sdhci@c8000000 {
 		status = "okay";
 		cd-gpios = <&gpio 173 0>; /* gpio PV5 */
diff --git a/arch/arm/boot/dts/tegra20-seaboard.dts b/arch/arm/boot/dts/tegra20-seaboard.dts
index 4204598..607bf0c 100644
--- a/arch/arm/boot/dts/tegra20-seaboard.dts
+++ b/arch/arm/boot/dts/tegra20-seaboard.dts
@@ -561,6 +561,10 @@
 		status = "okay";
 	};
 
+	usb-phy@c5004400 {
+		nvidia,phy-reset-gpio = <&gpio 169 0>; /* gpio PV1 */
+	};
+
 	sdhci@c8000000 {
 		status = "okay";
 		power-gpios = <&gpio 86 0>; /* gpio PK6 */
diff --git a/arch/arm/boot/dts/tegra20-trimslice.dts b/arch/arm/boot/dts/tegra20-trimslice.dts
index b70b4cb..e47cf6a 100644
--- a/arch/arm/boot/dts/tegra20-trimslice.dts
+++ b/arch/arm/boot/dts/tegra20-trimslice.dts
@@ -310,6 +310,10 @@
 		status = "okay";
 	};
 
+	usb-phy@c5004400 {
+		nvidia,phy-reset-gpio = <&gpio 168 0>; /* gpio PV0 */
+	};
+
 	sdhci@c8000000 {
 		status = "okay";
 		bus-width = <4>;
diff --git a/arch/arm/boot/dts/tegra20-ventana.dts b/arch/arm/boot/dts/tegra20-ventana.dts
index adc4754..f6c61d1 100644
--- a/arch/arm/boot/dts/tegra20-ventana.dts
+++ b/arch/arm/boot/dts/tegra20-ventana.dts
@@ -497,6 +497,10 @@
 		status = "okay";
 	};
 
+	usb-phy@c5004400 {
+		nvidia,phy-reset-gpio = <&gpio 169 0>; /* gpio PV1 */
+	};
+
 	sdhci@c8000000 {
 		status = "okay";
 		power-gpios = <&gpio 86 0>; /* gpio PK6 */
diff --git a/arch/arm/boot/dts/tegra20.dtsi b/arch/arm/boot/dts/tegra20.dtsi
index d665a67..6493915 100644
--- a/arch/arm/boot/dts/tegra20.dtsi
+++ b/arch/arm/boot/dts/tegra20.dtsi
@@ -400,6 +400,31 @@
 		#size-cells = <0>;
 	};
 
+	phy1: usb-phy@c5000400 {
+		compatible = "nvidia,tegra20-usb-phy";
+		reg = <0xc5000400 0x3c00>;
+		phy_type = "utmi";
+		nvidia,has-legacy-mode;
+		clocks = <&tegra_car 22>, <&tegra_car 127>;
+		clock-names = "phy", "pll_u";
+	};
+
+	phy2: usb-phy@c5004400 {
+		compatible = "nvidia,tegra20-usb-phy";
+		reg = <0xc5004400 0x3c00>;
+		phy_type = "ulpi";
+		clocks = <&tegra_car 94>, <&tegra_car 127>;
+		clock-names = "phy", "pll_u";
+	};
+
+	phy3: usb-phy@c5008400 {
+		compatible = "nvidia,tegra20-usb-phy";
+		reg = <0xc5008400 0x3C00>;
+		phy_type = "utmi";
+		clocks = <&tegra_car 22>, <&tegra_car 127>;
+		clock-names = "phy", "pll_u";
+	};
+
 	usb@c5000000 {
 		compatible = "nvidia,tegra20-ehci", "usb-ehci";
 		reg = <0xc5000000 0x4000>;
@@ -407,6 +432,8 @@
 		phy_type = "utmi";
 		nvidia,has-legacy-mode;
 		clocks = <&tegra_car 22>;
+		nvidia,needs-double-reset;
+		nvidia,phy = <&phy1>;
 		status = "disabled";
 	};
 
@@ -416,6 +443,7 @@
 		interrupts = <0 21 0x04>;
 		phy_type = "ulpi";
 		clocks = <&tegra_car 58>;
+		nvidia,phy = <&phy2>;
 		status = "disabled";
 	};
 
@@ -425,6 +453,7 @@
 		interrupts = <0 97 0x04>;
 		phy_type = "utmi";
 		clocks = <&tegra_car 59>;
+		nvidia,phy = <&phy3>;
 		status = "disabled";
 	};
 
diff --git a/arch/arm/mach-tegra/board-dt-tegra20.c b/arch/arm/mach-tegra/board-dt-tegra20.c
index abdbe9e..a0edf25 100644
--- a/arch/arm/mach-tegra/board-dt-tegra20.c
+++ b/arch/arm/mach-tegra/board-dt-tegra20.c
@@ -68,11 +68,11 @@ static struct tegra_ehci_platform_data tegra_ehci3_pdata = {
 };
 
 static struct of_dev_auxdata tegra20_auxdata_lookup[] __initdata = {
-	OF_DEV_AUXDATA("nvidia,tegra20-ehci", TEGRA_USB_BASE, "tegra-ehci.0",
+	OF_DEV_AUXDATA("nvidia,tegra20-ehci", 0xC5000000, "tegra-ehci.0",
 		       &tegra_ehci1_pdata),
-	OF_DEV_AUXDATA("nvidia,tegra20-ehci", TEGRA_USB2_BASE, "tegra-ehci.1",
+	OF_DEV_AUXDATA("nvidia,tegra20-ehci", 0xC5004000, "tegra-ehci.1",
 		       &tegra_ehci2_pdata),
-	OF_DEV_AUXDATA("nvidia,tegra20-ehci", TEGRA_USB3_BASE, "tegra-ehci.2",
+	OF_DEV_AUXDATA("nvidia,tegra20-ehci", 0xC5008000, "tegra-ehci.2",
 		       &tegra_ehci3_pdata),
 	{}
 };
diff --git a/arch/arm/mach-tegra/iomap.h b/arch/arm/mach-tegra/iomap.h
index db8be51..399fbca 100644
--- a/arch/arm/mach-tegra/iomap.h
+++ b/arch/arm/mach-tegra/iomap.h
@@ -240,15 +240,6 @@
 #define TEGRA_CSITE_BASE		0x70040000
 #define TEGRA_CSITE_SIZE		SZ_256K
 
-#define TEGRA_USB_BASE			0xC5000000
-#define TEGRA_USB_SIZE			SZ_16K
-
-#define TEGRA_USB2_BASE			0xC5004000
-#define TEGRA_USB2_SIZE			SZ_16K
-
-#define TEGRA_USB3_BASE			0xC5008000
-#define TEGRA_USB3_SIZE			SZ_16K
-
 #define TEGRA_SDMMC1_BASE		0xC8000000
 #define TEGRA_SDMMC1_SIZE		SZ_512
 
diff --git a/drivers/usb/host/ehci-tegra.c b/drivers/usb/host/ehci-tegra.c
index acf1755..568aecc 100644
--- a/drivers/usb/host/ehci-tegra.c
+++ b/drivers/usb/host/ehci-tegra.c
@@ -2,7 +2,7 @@
  * EHCI-compliant USB host controller driver for NVIDIA Tegra SoCs
  *
  * Copyright (C) 2010 Google, Inc.
- * Copyright (C) 2009 NVIDIA Corporation
+ * Copyright (C) 2009 - 2013 NVIDIA Corporation
  *
  * 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
@@ -26,23 +26,28 @@
 #include <linux/of.h>
 #include <linux/of_gpio.h>
 #include <linux/pm_runtime.h>
-
+#include <linux/usb/ehci_def.h>
 #include <linux/usb/tegra_usb_phy.h>
 
 #define TEGRA_USB_BASE			0xC5000000
 #define TEGRA_USB2_BASE			0xC5004000
 #define TEGRA_USB3_BASE			0xC5008000
 
+/* PORTSC registers */
+#define TEGRA_USB_PORTSC1			0x184
+#define TEGRA_USB_PORTSC1_PTS(x)	(((x) & 0x3) << 30)
+#define TEGRA_USB_PORTSC1_PHCD	(1 << 23)
+
 #define TEGRA_USB_DMA_ALIGN 32
 
 struct tegra_ehci_hcd {
 	struct ehci_hcd *ehci;
 	struct tegra_usb_phy *phy;
 	struct clk *clk;
-	struct clk *emc_clk;
 	struct usb_phy *transceiver;
 	int host_resumed;
 	int port_resuming;
+	bool needs_double_reset;
 	enum tegra_usb_phy_port_speed port_speed;
 };
 
@@ -50,9 +55,8 @@ static void tegra_ehci_power_up(struct usb_hcd *hcd)
 {
 	struct tegra_ehci_hcd *tegra = dev_get_drvdata(hcd->self.controller);
 
-	clk_prepare_enable(tegra->emc_clk);
 	clk_prepare_enable(tegra->clk);
-	usb_phy_set_suspend(&tegra->phy->u_phy, 0);
+	usb_phy_set_suspend(hcd->phy, 0);
 	tegra->host_resumed = 1;
 }
 
@@ -61,9 +65,8 @@ static void tegra_ehci_power_down(struct usb_hcd *hcd)
 	struct tegra_ehci_hcd *tegra = dev_get_drvdata(hcd->self.controller);
 
 	tegra->host_resumed = 0;
-	usb_phy_set_suspend(&tegra->phy->u_phy, 1);
+	usb_phy_set_suspend(hcd->phy, 1);
 	clk_disable_unprepare(tegra->clk);
-	clk_disable_unprepare(tegra->emc_clk);
 }
 
 static int tegra_ehci_internal_port_reset(
@@ -156,7 +159,7 @@ static int tegra_ehci_hub_control(
 		if (tegra->port_resuming && !(temp & PORT_SUSPEND)) {
 			/* Resume completed, re-enable disconnect detection */
 			tegra->port_resuming = 0;
-			tegra_usb_phy_postresume(tegra->phy);
+			tegra_usb_phy_postresume(hcd->phy);
 		}
 	}
 
@@ -184,7 +187,7 @@ static int tegra_ehci_hub_control(
 	}
 
 	/* For USB1 port we need to issue Port Reset twice internally */
-	if (tegra->phy->instance == 0 &&
+	if (tegra->needs_double_reset &&
 	   (typeReq == SetPortFeature && wValue == USB_PORT_FEAT_RESET)) {
 		spin_unlock_irqrestore(&ehci->lock, flags);
 		return tegra_ehci_internal_port_reset(ehci, status_reg);
@@ -209,7 +212,7 @@ static int tegra_ehci_hub_control(
 			goto done;
 
 		/* Disable disconnect detection during port resume */
-		tegra_usb_phy_preresume(tegra->phy);
+		tegra_usb_phy_preresume(hcd->phy);
 
 		ehci->reset_done[wIndex-1] = jiffies + msecs_to_jiffies(25);
 
@@ -473,7 +476,7 @@ static int controller_resume(struct device *dev)
 	}
 
 	/* Force the phy to keep data lines in suspend state */
-	tegra_ehci_phy_restore_start(tegra->phy, tegra->port_speed);
+	tegra_ehci_phy_restore_start(hcd->phy, tegra->port_speed);
 
 	/* Enable host mode */
 	tdi_reset(ehci);
@@ -540,17 +543,17 @@ static int controller_resume(struct device *dev)
 		}
 	}
 
-	tegra_ehci_phy_restore_end(tegra->phy);
+	tegra_ehci_phy_restore_end(hcd->phy);
 	goto done;
 
  restart:
 	if (tegra->port_speed <= TEGRA_USB_PHY_PORT_SPEED_HIGH)
-		tegra_ehci_phy_restore_end(tegra->phy);
+		tegra_ehci_phy_restore_end(hcd->phy);
 
 	tegra_ehci_restart(hcd);
 
  done:
-	tegra_usb_phy_preresume(tegra->phy);
+	tegra_usb_phy_preresume(hcd->phy);
 	tegra->port_resuming = 1;
 	return 0;
 }
@@ -604,6 +607,37 @@ static const struct dev_pm_ops tegra_ehci_pm_ops = {
 
 #endif
 
+/* Bits of PORTSC1, which will get cleared by writing 1 into them */
+#define TEGRA_PORTSC1_RWC_BITS (PORT_CSC | PORT_PEC | PORT_OCC)
+
+void tegra_ehci_set_pts(struct usb_phy *x, u8 pts_val)
+{
+	unsigned long val;
+	struct usb_hcd *hcd = bus_to_hcd(x->otg->host);
+	void __iomem *base = hcd->regs;
+
+	val = readl(base + TEGRA_USB_PORTSC1) & ~TEGRA_PORTSC1_RWC_BITS;
+	val &= ~TEGRA_USB_PORTSC1_PTS(3);
+	val |= TEGRA_USB_PORTSC1_PTS(pts_val & 3);
+	writel(val, base + TEGRA_USB_PORTSC1);
+}
+EXPORT_SYMBOL_GPL(tegra_ehci_set_pts);
+
+void tegra_ehci_set_phcd(struct usb_phy *x, bool enable)
+{
+	unsigned long val;
+	struct usb_hcd *hcd = bus_to_hcd(x->otg->host);
+	void __iomem *base = hcd->regs;
+
+	val = readl(base + TEGRA_USB_PORTSC1) & ~TEGRA_PORTSC1_RWC_BITS;
+	if (enable)
+		val |= TEGRA_USB_PORTSC1_PHCD;
+	else
+		val &= ~TEGRA_USB_PORTSC1_PHCD;
+	writel(val, base + TEGRA_USB_PORTSC1);
+}
+EXPORT_SYMBOL_GPL(tegra_ehci_set_phcd);
+
 static u64 tegra_ehci_dma_mask = DMA_BIT_MASK(32);
 
 static int tegra_ehci_probe(struct platform_device *pdev)
@@ -615,6 +649,7 @@ static int tegra_ehci_probe(struct platform_device *pdev)
 	int err = 0;
 	int irq;
 	int instance = pdev->id;
+	struct usb_phy *u_phy;
 
 	pdata = pdev->dev.platform_data;
 	if (!pdata) {
@@ -656,15 +691,8 @@ static int tegra_ehci_probe(struct platform_device *pdev)
 	if (err)
 		goto fail_clk;
 
-	tegra->emc_clk = devm_clk_get(&pdev->dev, "emc");
-	if (IS_ERR(tegra->emc_clk)) {
-		dev_err(&pdev->dev, "Can't get emc clock\n");
-		err = PTR_ERR(tegra->emc_clk);
-		goto fail_emc_clk;
-	}
-
-	clk_prepare_enable(tegra->emc_clk);
-	clk_set_rate(tegra->emc_clk, 400000000);
+	tegra->needs_double_reset = of_property_read_bool(pdev->dev.of_node,
+		"nvidia,needs-double-reset");
 
 	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
 	if (!res) {
@@ -712,9 +740,19 @@ static int tegra_ehci_probe(struct platform_device *pdev)
 		goto fail_io;
 	}
 
-	usb_phy_init(&tegra->phy->u_phy);
+	hcd->phy = u_phy = &tegra->phy->u_phy;
+	usb_phy_init(hcd->phy);
+
+	u_phy->otg = devm_kzalloc(&pdev->dev, sizeof(struct usb_otg),
+			     GFP_KERNEL);
+	if (!u_phy->otg) {
+		dev_err(&pdev->dev, "Failed to alloc memory for otg\n");
+		err = -ENOMEM;
+		goto fail_io;
+	}
+	u_phy->otg->host = hcd_to_bus(hcd);
 
-	err = usb_phy_set_suspend(&tegra->phy->u_phy, 0);
+	err = usb_phy_set_suspend(hcd->phy, 0);
 	if (err) {
 		dev_err(&pdev->dev, "Failed to power on the phy\n");
 		goto fail;
@@ -760,10 +798,8 @@ fail:
 	if (!IS_ERR_OR_NULL(tegra->transceiver))
 		otg_set_host(tegra->transceiver->otg, NULL);
 #endif
-	usb_phy_shutdown(&tegra->phy->u_phy);
+	usb_phy_shutdown(hcd->phy);
 fail_io:
-	clk_disable_unprepare(tegra->emc_clk);
-fail_emc_clk:
 	clk_disable_unprepare(tegra->clk);
 fail_clk:
 	usb_put_hcd(hcd);
@@ -784,15 +820,12 @@ static int tegra_ehci_remove(struct platform_device *pdev)
 		otg_set_host(tegra->transceiver->otg, NULL);
 #endif
 
+	usb_phy_shutdown(hcd->phy);
 	usb_remove_hcd(hcd);
 	usb_put_hcd(hcd);
 
-	usb_phy_shutdown(&tegra->phy->u_phy);
-
 	clk_disable_unprepare(tegra->clk);
 
-	clk_disable_unprepare(tegra->emc_clk);
-
 	return 0;
 }
 
diff --git a/drivers/usb/phy/tegra_usb_phy.c b/drivers/usb/phy/tegra_usb_phy.c
index 9d13c81..5487d38 100644
--- a/drivers/usb/phy/tegra_usb_phy.c
+++ b/drivers/usb/phy/tegra_usb_phy.c
@@ -24,6 +24,7 @@
 #include <linux/platform_device.h>
 #include <linux/io.h>
 #include <linux/gpio.h>
+#include <linux/of.h>
 #include <linux/of_gpio.h>
 #include <linux/usb/otg.h>
 #include <linux/usb/ulpi.h>
@@ -35,19 +36,6 @@
 
 #define ULPI_VIEWPORT		0x170
 
-#define USB_PORTSC1		0x184
-#define   USB_PORTSC1_PTS(x)	(((x) & 0x3) << 30)
-#define   USB_PORTSC1_PSPD(x)	(((x) & 0x3) << 26)
-#define   USB_PORTSC1_PHCD	(1 << 23)
-#define   USB_PORTSC1_WKOC	(1 << 22)
-#define   USB_PORTSC1_WKDS	(1 << 21)
-#define   USB_PORTSC1_WKCN	(1 << 20)
-#define   USB_PORTSC1_PTC(x)	(((x) & 0xf) << 16)
-#define   USB_PORTSC1_PP	(1 << 12)
-#define   USB_PORTSC1_SUSP	(1 << 7)
-#define   USB_PORTSC1_PE	(1 << 2)
-#define   USB_PORTSC1_CCS	(1 << 0)
-
 #define USB_SUSP_CTRL		0x400
 #define   USB_WAKE_ON_CNNT_EN_DEV	(1 << 3)
 #define   USB_WAKE_ON_DISCON_EN_DEV	(1 << 4)
@@ -208,11 +196,6 @@ static struct tegra_utmip_config utmip_default[] = {
 	},
 };
 
-static inline bool phy_is_ulpi(struct tegra_usb_phy *phy)
-{
-	return (phy->instance == 1);
-}
-
 static int utmip_pad_open(struct tegra_usb_phy *phy)
 {
 	phy->pad_clk = clk_get_sys("utmip-pad", NULL);
@@ -221,7 +204,7 @@ static int utmip_pad_open(struct tegra_usb_phy *phy)
 		return PTR_ERR(phy->pad_clk);
 	}
 
-	if (phy->instance == 0) {
+	if (phy->is_legacy_phy) {
 		phy->pad_regs = phy->regs;
 	} else {
 		phy->pad_regs = ioremap(TEGRA_USB_BASE, TEGRA_USB_SIZE);
@@ -236,7 +219,7 @@ static int utmip_pad_open(struct tegra_usb_phy *phy)
 
 static void utmip_pad_close(struct tegra_usb_phy *phy)
 {
-	if (phy->instance != 0)
+	if (!phy->is_legacy_phy)
 		iounmap(phy->pad_regs);
 	clk_put(phy->pad_clk);
 }
@@ -305,7 +288,7 @@ static void utmi_phy_clk_disable(struct tegra_usb_phy *phy)
 	unsigned long val;
 	void __iomem *base = phy->regs;
 
-	if (phy->instance == 0) {
+	if (phy->is_legacy_phy) {
 		val = readl(base + USB_SUSP_CTRL);
 		val |= USB_SUSP_SET;
 		writel(val, base + USB_SUSP_CTRL);
@@ -315,13 +298,8 @@ static void utmi_phy_clk_disable(struct tegra_usb_phy *phy)
 		val = readl(base + USB_SUSP_CTRL);
 		val &= ~USB_SUSP_SET;
 		writel(val, base + USB_SUSP_CTRL);
-	}
-
-	if (phy->instance == 2) {
-		val = readl(base + USB_PORTSC1);
-		val |= USB_PORTSC1_PHCD;
-		writel(val, base + USB_PORTSC1);
-	}
+	} else
+		tegra_ehci_set_phcd(&phy->u_phy, true);
 
 	if (utmi_wait_register(base + USB_SUSP_CTRL, USB_PHY_CLK_VALID, 0) < 0)
 		pr_err("%s: timeout waiting for phy to stabilize\n", __func__);
@@ -332,7 +310,7 @@ static void utmi_phy_clk_enable(struct tegra_usb_phy *phy)
 	unsigned long val;
 	void __iomem *base = phy->regs;
 
-	if (phy->instance == 0) {
+	if (phy->is_legacy_phy) {
 		val = readl(base + USB_SUSP_CTRL);
 		val |= USB_SUSP_CLR;
 		writel(val, base + USB_SUSP_CTRL);
@@ -342,13 +320,8 @@ static void utmi_phy_clk_enable(struct tegra_usb_phy *phy)
 		val = readl(base + USB_SUSP_CTRL);
 		val &= ~USB_SUSP_CLR;
 		writel(val, base + USB_SUSP_CTRL);
-	}
-
-	if (phy->instance == 2) {
-		val = readl(base + USB_PORTSC1);
-		val &= ~USB_PORTSC1_PHCD;
-		writel(val, base + USB_PORTSC1);
-	}
+	} else
+		tegra_ehci_set_phcd(&phy->u_phy, false);
 
 	if (utmi_wait_register(base + USB_SUSP_CTRL, USB_PHY_CLK_VALID,
 						     USB_PHY_CLK_VALID))
@@ -365,7 +338,7 @@ static int utmi_phy_power_on(struct tegra_usb_phy *phy)
 	val |= UTMIP_RESET;
 	writel(val, base + USB_SUSP_CTRL);
 
-	if (phy->instance == 0) {
+	if (phy->is_legacy_phy) {
 		val = readl(base + USB1_LEGACY_CTRL);
 		val |= USB1_NO_LEGACY_MODE;
 		writel(val, base + USB1_LEGACY_CTRL);
@@ -440,16 +413,14 @@ static int utmi_phy_power_on(struct tegra_usb_phy *phy)
 	val |= UTMIP_BIAS_PDTRK_COUNT(0x5);
 	writel(val, base + UTMIP_BIAS_CFG1);
 
-	if (phy->instance == 0) {
+	if (phy->is_legacy_phy) {
 		val = readl(base + UTMIP_SPARE_CFG0);
 		if (phy->mode == TEGRA_USB_PHY_MODE_DEVICE)
 			val &= ~FUSE_SETUP_SEL;
 		else
 			val |= FUSE_SETUP_SEL;
 		writel(val, base + UTMIP_SPARE_CFG0);
-	}
-
-	if (phy->instance == 2) {
+	} else {
 		val = readl(base + USB_SUSP_CTRL);
 		val |= UTMIP_PHY_ENABLE;
 		writel(val, base + USB_SUSP_CTRL);
@@ -459,7 +430,7 @@ static int utmi_phy_power_on(struct tegra_usb_phy *phy)
 	val &= ~UTMIP_RESET;
 	writel(val, base + USB_SUSP_CTRL);
 
-	if (phy->instance == 0) {
+	if (phy->is_legacy_phy) {
 		val = readl(base + USB1_LEGACY_CTRL);
 		val &= ~USB1_VBUS_SENSE_CTL_MASK;
 		val |= USB1_VBUS_SENSE_CTL_A_SESS_VLD;
@@ -472,11 +443,8 @@ static int utmi_phy_power_on(struct tegra_usb_phy *phy)
 
 	utmi_phy_clk_enable(phy);
 
-	if (phy->instance == 2) {
-		val = readl(base + USB_PORTSC1);
-		val &= ~USB_PORTSC1_PTS(~0);
-		writel(val, base + USB_PORTSC1);
-	}
+	if (!phy->is_legacy_phy)
+		tegra_ehci_set_pts(&phy->u_phy, 0);
 
 	return 0;
 }
@@ -621,10 +589,6 @@ static int ulpi_phy_power_on(struct tegra_usb_phy *phy)
 		return ret;
 	}
 
-	val = readl(base + USB_PORTSC1);
-	val |= USB_PORTSC1_WKOC | USB_PORTSC1_WKDS | USB_PORTSC1_WKCN;
-	writel(val, base + USB_PORTSC1);
-
 	val = readl(base + USB_SUSP_CTRL);
 	val |= USB_SUSP_CLR;
 	writel(val, base + USB_SUSP_CTRL);
@@ -639,17 +603,8 @@ static int ulpi_phy_power_on(struct tegra_usb_phy *phy)
 
 static int ulpi_phy_power_off(struct tegra_usb_phy *phy)
 {
-	unsigned long val;
-	void __iomem *base = phy->regs;
 	struct tegra_ulpi_config *config = phy->config;
 
-	/* Clear WKCN/WKDS/WKOC wake-on events that can cause the USB
-	 * Controller to immediately bring the ULPI PHY out of low power
-	 */
-	val = readl(base + USB_PORTSC1);
-	val &= ~(USB_PORTSC1_WKOC | USB_PORTSC1_WKDS | USB_PORTSC1_WKCN);
-	writel(val, base + USB_PORTSC1);
-
 	clk_disable(phy->clk);
 	return gpio_direction_output(config->reset_gpio, 0);
 }
@@ -660,7 +615,7 @@ static int	tegra_phy_init(struct usb_phy *x)
 	struct tegra_ulpi_config *ulpi_config;
 	int err;
 
-	if (phy_is_ulpi(phy)) {
+	if (phy->is_ulpi_phy) {
 		ulpi_config = phy->config;
 		phy->clk = clk_get_sys(NULL, ulpi_config->clk);
 		if (IS_ERR(phy->clk)) {
@@ -698,7 +653,7 @@ static void tegra_usb_phy_close(struct usb_phy *x)
 {
 	struct tegra_usb_phy *phy = container_of(x, struct tegra_usb_phy, u_phy);
 
-	if (phy_is_ulpi(phy))
+	if (phy->is_ulpi_phy)
 		clk_put(phy->clk);
 	else
 		utmip_pad_close(phy);
@@ -709,7 +664,7 @@ static void tegra_usb_phy_close(struct usb_phy *x)
 
 static int tegra_usb_phy_power_on(struct tegra_usb_phy *phy)
 {
-	if (phy_is_ulpi(phy))
+	if (phy->is_ulpi_phy)
 		return ulpi_phy_power_on(phy);
 	else
 		return utmi_phy_power_on(phy);
@@ -717,7 +672,7 @@ static int tegra_usb_phy_power_on(struct tegra_usb_phy *phy)
 
 static int tegra_usb_phy_power_off(struct tegra_usb_phy *phy)
 {
-	if (phy_is_ulpi(phy))
+	if (phy->is_ulpi_phy)
 		return ulpi_phy_power_off(phy);
 	else
 		return utmi_phy_power_off(phy);
@@ -739,8 +694,9 @@ struct tegra_usb_phy *tegra_usb_phy_open(struct device *dev, int instance,
 	unsigned long parent_rate;
 	int i;
 	int err;
+	struct device_node *np = dev->of_node;
 
-	phy = kmalloc(sizeof(struct tegra_usb_phy), GFP_KERNEL);
+	phy = kzalloc(sizeof(struct tegra_usb_phy), GFP_KERNEL);
 	if (!phy)
 		return ERR_PTR(-ENOMEM);
 
@@ -749,9 +705,16 @@ struct tegra_usb_phy *tegra_usb_phy_open(struct device *dev, int instance,
 	phy->config = config;
 	phy->mode = phy_mode;
 	phy->dev = dev;
+	phy->is_legacy_phy =
+		of_property_read_bool(np, "nvidia,has-legacy-mode");
+	err = of_property_match_string(np, "phy_type", "ulpi");
+	if (err < 0)
+		phy->is_ulpi_phy = false;
+	else
+		phy->is_ulpi_phy = true;
 
 	if (!phy->config) {
-		if (phy_is_ulpi(phy)) {
+		if (phy->is_ulpi_phy) {
 			pr_err("%s: ulpi phy configuration missing", __func__);
 			err = -EINVAL;
 			goto err0;
@@ -796,45 +759,40 @@ err0:
 }
 EXPORT_SYMBOL_GPL(tegra_usb_phy_open);
 
-void tegra_usb_phy_preresume(struct tegra_usb_phy *phy)
+void tegra_usb_phy_preresume(struct usb_phy *x)
 {
-	if (!phy_is_ulpi(phy))
+	struct tegra_usb_phy *phy = container_of(x, struct tegra_usb_phy, u_phy);
+
+	if (!phy->is_ulpi_phy)
 		utmi_phy_preresume(phy);
 }
 EXPORT_SYMBOL_GPL(tegra_usb_phy_preresume);
 
-void tegra_usb_phy_postresume(struct tegra_usb_phy *phy)
+void tegra_usb_phy_postresume(struct usb_phy *x)
 {
-	if (!phy_is_ulpi(phy))
+	struct tegra_usb_phy *phy = container_of(x, struct tegra_usb_phy, u_phy);
+
+	if (!phy->is_ulpi_phy)
 		utmi_phy_postresume(phy);
 }
 EXPORT_SYMBOL_GPL(tegra_usb_phy_postresume);
 
-void tegra_ehci_phy_restore_start(struct tegra_usb_phy *phy,
+void tegra_ehci_phy_restore_start(struct usb_phy *x,
 				 enum tegra_usb_phy_port_speed port_speed)
 {
-	if (!phy_is_ulpi(phy))
+	struct tegra_usb_phy *phy = container_of(x, struct tegra_usb_phy, u_phy);
+
+	if (!phy->is_ulpi_phy)
 		utmi_phy_restore_start(phy, port_speed);
 }
 EXPORT_SYMBOL_GPL(tegra_ehci_phy_restore_start);
 
-void tegra_ehci_phy_restore_end(struct tegra_usb_phy *phy)
+void tegra_ehci_phy_restore_end(struct usb_phy *x)
 {
-	if (!phy_is_ulpi(phy))
+	struct tegra_usb_phy *phy = container_of(x, struct tegra_usb_phy, u_phy);
+
+	if (!phy->is_ulpi_phy)
 		utmi_phy_restore_end(phy);
 }
 EXPORT_SYMBOL_GPL(tegra_ehci_phy_restore_end);
 
-void tegra_usb_phy_clk_disable(struct tegra_usb_phy *phy)
-{
-	if (!phy_is_ulpi(phy))
-		utmi_phy_clk_disable(phy);
-}
-EXPORT_SYMBOL_GPL(tegra_usb_phy_clk_disable);
-
-void tegra_usb_phy_clk_enable(struct tegra_usb_phy *phy)
-{
-	if (!phy_is_ulpi(phy))
-		utmi_phy_clk_enable(phy);
-}
-EXPORT_SYMBOL_GPL(tegra_usb_phy_clk_enable);
diff --git a/include/linux/usb/tegra_usb_phy.h b/include/linux/usb/tegra_usb_phy.h
index 176b1ca..9ebebe9 100644
--- a/include/linux/usb/tegra_usb_phy.h
+++ b/include/linux/usb/tegra_usb_phy.h
@@ -59,22 +59,24 @@ struct tegra_usb_phy {
 	struct usb_phy *ulpi;
 	struct usb_phy u_phy;
 	struct device *dev;
+	bool is_legacy_phy;
+	bool is_ulpi_phy;
 };
 
 struct tegra_usb_phy *tegra_usb_phy_open(struct device *dev, int instance,
 	void __iomem *regs, void *config, enum tegra_usb_phy_mode phy_mode);
 
-void tegra_usb_phy_clk_disable(struct tegra_usb_phy *phy);
+void tegra_usb_phy_preresume(struct usb_phy *phy);
 
-void tegra_usb_phy_clk_enable(struct tegra_usb_phy *phy);
+void tegra_usb_phy_postresume(struct usb_phy *phy);
 
-void tegra_usb_phy_preresume(struct tegra_usb_phy *phy);
+void tegra_ehci_phy_restore_start(struct usb_phy *phy,
+				 enum tegra_usb_phy_port_speed port_speed);
 
-void tegra_usb_phy_postresume(struct tegra_usb_phy *phy);
+void tegra_ehci_phy_restore_end(struct usb_phy *phy);
 
-void tegra_ehci_phy_restore_start(struct tegra_usb_phy *phy,
-				 enum tegra_usb_phy_port_speed port_speed);
+void tegra_ehci_set_pts(struct usb_phy *x, u8 pts_val);
 
-void tegra_ehci_phy_restore_end(struct tegra_usb_phy *phy);
+void tegra_ehci_set_phcd(struct usb_phy *x, bool enable);
 
 #endif /* __TEGRA_USB_PHY_H */