[PATCH v6 0/8] Enable USB 3.0 support on Exynos5 systems

[PATCH v6 0/8] Enable USB 3.0 support on Exynos5 systems

[Vivek Gautam]

From: Vivek gautam <gautam.vivek@samsung.com>

Based on 'for-next' branch of Kgene's linux-samsung tree;
along with dts patches for USB 2.0 phy[1], and Exynos5800 [2].
Also based on the latest USB 3.0 DRD phy driver patches posted [3].

Changes from v5:
 - Added node reference names for new boards.
 - Removed 'samsung,pmu-offset' porperty from nodes, since with latest driver
   bindings this is not required.
 - Added aliase nodes in Exynos5420 to facilitate latest driver bindings.
 - Added patch to add VBUS regulator for peach-pi board also.
 - Dropped patches removing older usb-phy driver:
   usb-phy: samsung-usb3: Remove older phy-samsung-usb3 driver
   ARM: exynos_defconfig: Remove SAMSUNG_USB3PHY config
   as appeared in V5 version of this series.
   Will post them separately after the new driver is merged.

[1] http://www.spinics.net/lists/linux-samsung-soc/msg30494.html
[2] http://comments.gmane.org/gmane.linux.kernel.samsung-soc/31133
[3] https://lkml.org/lkml/2014/5/13/285

Vivek Gautam (7):
  ARM: dts: exynos5420: Enable support for USB 3.0 PHY controller
  ARM: dts: exynos5420: Enable support for DWC3 controller
  ARM: dts: exynos5250: Enable support for generic USB DRD phy
  ARM: dts: exynos5250: Update DWC3 usb controller to use new phy
    driver
  ARM: dts: exynos5250-snow: Add Vbus regulator for USB 3.0
  ARM: dts: exynos5420-peach-pit: Add Vbus regulator for USB 3.0
  ARM: dts: exynos5420-smdk5420: Add Vbus regulator for USB 3.0

Vivek gautam (1):
  ARM: dts: exynos5800-peach-pi: Add Vbus regulator for USB 3.0

 arch/arm/boot/dts/exynos5250-snow.dts      |   22 ++++++++++++
 arch/arm/boot/dts/exynos5250.dtsi          |   20 +++++------
 arch/arm/boot/dts/exynos5420-peach-pit.dts |   46 ++++++++++++++++++++++++
 arch/arm/boot/dts/exynos5420-smdk5420.dts  |   46 ++++++++++++++++++++++++
 arch/arm/boot/dts/exynos5420.dtsi          |   54 ++++++++++++++++++++++++++++
 arch/arm/boot/dts/exynos5800-peach-pi.dts  |   46 ++++++++++++++++++++++++
 6 files changed, 222 insertions(+), 12 deletions(-)

-- 
1.7.10.4

[PATCH v6 1/8] ARM: dts: exynos5420: Enable support for USB 3.0 PHY controller

[Vivek Gautam]

Add device tree nodes for USB 3.0 PHY present alongwith
USB 3.0 controller Exynos 5420 SoC. This phy driver is
based on generic phy framework.

Signed-off-by: Vivek Gautam <gautam.vivek@samsung.com>
Reviewed-by: Tomasz Figa <t.figa@samsung.com>
---
 arch/arm/boot/dts/exynos5420.dtsi |   20 ++++++++++++++++++++
 1 file changed, 20 insertions(+)

diff --git a/arch/arm/boot/dts/exynos5420.dtsi b/arch/arm/boot/dts/exynos5420.dtsi
index 6fe321b..8eebf7f 100644
--- a/arch/arm/boot/dts/exynos5420.dtsi
+++ b/arch/arm/boot/dts/exynos5420.dtsi
@@ -47,6 +47,8 @@
 		spi0 = &spi_0;
 		spi1 = &spi_1;
 		spi2 = &spi_2;
+		usbdrdphy0 = &usbdrd_phy0;
+		usbdrdphy1 = &usbdrd_phy1;
 	};
 
 	cpus {
@@ -802,4 +804,22 @@
 		samsung,sysreg-phandle = <&sysreg_system_controller>;
 		samsung,pmureg-phandle = <&pmu_system_controller>;
 	};
+
+	usbdrd_phy0: phy@12100000 {
+		compatible = "samsung,exynos5420-usbdrd-phy";
+		reg = <0x12100000 0x100>;
+		clocks = <&clock CLK_USBD300>, <&clock CLK_SCLK_USBPHY300>;
+		clock-names = "phy", "ref";
+		samsung,pmu-syscon = <&pmu_system_controller>;
+		#phy-cells = <1>;
+	};
+
+	usbdrd_phy1: phy@12500000 {
+		compatible = "samsung,exynos5420-usbdrd-phy";
+		reg = <0x12500000 0x100>;
+		clocks = <&clock CLK_USBD301>, <&clock CLK_SCLK_USBPHY301>;
+		clock-names = "phy", "ref";
+		samsung,pmu-syscon = <&pmu_system_controller>;
+		#phy-cells = <1>;
+	};
 };
-- 
1.7.10.4

[PATCH v6 2/8] ARM: dts: exynos5420: Enable support for DWC3 controller

[Vivek Gautam]

Add device tree nodes for DWC3 controller present on
Exynos 5420 SoC, to enable support for USB 3.0.

Signed-off-by: Vivek Gautam <gautam.vivek@samsung.com>
Reviewed-by: Tomasz Figa <t.figa@samsung.com>
---
 arch/arm/boot/dts/exynos5420.dtsi |   34 ++++++++++++++++++++++++++++++++++
 1 file changed, 34 insertions(+)

diff --git a/arch/arm/boot/dts/exynos5420.dtsi b/arch/arm/boot/dts/exynos5420.dtsi
index 8eebf7f..128829a 100644
--- a/arch/arm/boot/dts/exynos5420.dtsi
+++ b/arch/arm/boot/dts/exynos5420.dtsi
@@ -805,6 +805,23 @@
 		samsung,pmureg-phandle = <&pmu_system_controller>;
 	};
 
+	usbdrd3_0: usb@12000000 {
+		compatible = "samsung,exynos5250-dwusb3";
+		clocks = <&clock CLK_USBD300>;
+		clock-names = "usbdrd30";
+		#address-cells = <1>;
+		#size-cells = <1>;
+		ranges;
+
+		dwc3 {
+			compatible = "snps,dwc3";
+			reg = <0x12000000 0x10000>;
+			interrupts = <0 72 0>;
+			phys = <&usbdrd_phy0 0>, <&usbdrd_phy0 1>;
+			phy-names = "usb2-phy", "usb3-phy";
+		};
+	};
+
 	usbdrd_phy0: phy@12100000 {
 		compatible = "samsung,exynos5420-usbdrd-phy";
 		reg = <0x12100000 0x100>;
@@ -814,6 +831,23 @@
 		#phy-cells = <1>;
 	};
 
+	usbdrd3_1: usb@12400000 {
+		compatible = "samsung,exynos5250-dwusb3";
+		clocks = <&clock CLK_USBD301>;
+		clock-names = "usbdrd30";
+		#address-cells = <1>;
+		#size-cells = <1>;
+		ranges;
+
+		dwc3 {
+			compatible = "snps,dwc3";
+			reg = <0x12400000 0x10000>;
+			interrupts = <0 73 0>;
+			phys = <&usbdrd_phy1 0>, <&usbdrd_phy1 1>;
+			phy-names = "usb2-phy", "usb3-phy";
+		};
+	};
+
 	usbdrd_phy1: phy@12500000 {
 		compatible = "samsung,exynos5420-usbdrd-phy";
 		reg = <0x12500000 0x100>;
-- 
1.7.10.4

[PATCH v6 3/8] ARM: dts: exynos5250: Enable support for generic USB DRD phy

[Vivek Gautam]

Add device tree node for new usbdrd-phy driver, which
is based on generic phy framework.

Signed-off-by: Vivek Gautam <gautam.vivek@samsung.com>
Reviewed-by: Tomasz Figa <t.figa@samsung.com>
---
 arch/arm/boot/dts/exynos5250.dtsi |    9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/arch/arm/boot/dts/exynos5250.dtsi b/arch/arm/boot/dts/exynos5250.dtsi
index 2fa6345..8303a42 100644
--- a/arch/arm/boot/dts/exynos5250.dtsi
+++ b/arch/arm/boot/dts/exynos5250.dtsi
@@ -574,6 +574,15 @@
 		};
 	};
 
+	usbdrd_phy: phy@12100000 {
+		compatible = "samsung,exynos5250-usbdrd-phy";
+		reg = <0x12100000 0x100>;
+		clocks = <&clock CLK_USB3>, <&clock CLK_FIN_PLL>;
+		clock-names = "phy", "ref";
+		samsung,pmu-syscon = <&pmu_system_controller>;
+		#phy-cells = <1>;
+	};
+
 	usb@12110000 {
 		compatible = "samsung,exynos4210-ehci";
 		reg = <0x12110000 0x100>;
-- 
1.7.10.4

[PATCH v6 4/8] ARM: dts: exynos5250: Update DWC3 usb controller to use new phy driver

[Vivek Gautam]

Removing the dt node for older usb3 phy driver from Exynos5250
device tree and updating the dt node for DWC3 controller to
use new phy driver based on generic phy framework.

Signed-off-by: Vivek Gautam <gautam.vivek@samsung.com>
Reviewed-by: Tomasz Figa <t.figa@samsung.com>
---
 arch/arm/boot/dts/exynos5250.dtsi |   17 ++---------------
 1 file changed, 2 insertions(+), 15 deletions(-)

diff --git a/arch/arm/boot/dts/exynos5250.dtsi b/arch/arm/boot/dts/exynos5250.dtsi
index 8303a42..8deadc3 100644
--- a/arch/arm/boot/dts/exynos5250.dtsi
+++ b/arch/arm/boot/dts/exynos5250.dtsi
@@ -556,21 +556,8 @@
 			compatible = "synopsys,dwc3";
 			reg = <0x12000000 0x10000>;
 			interrupts = <0 72 0>;
-			usb-phy = <&usb2_phy &usb3_phy>;
-		};
-	};
-
-	usb3_phy: usbphy@12100000 {
-		compatible = "samsung,exynos5250-usb3phy";
-		reg = <0x12100000 0x100>;
-		clocks = <&clock CLK_FIN_PLL>, <&clock CLK_USB3>;
-		clock-names = "ext_xtal", "usbdrd30";
-		#address-cells = <1>;
-		#size-cells = <1>;
-		ranges;
-
-		usbphy-sys {
-			reg = <0x10040704 0x8>;
+			phys = <&usbdrd_phy 0>, <&usbdrd_phy 1>;
+			phy-names = "usb2-phy", "usb3-phy";
 		};
 	};
 
-- 
1.7.10.4

[PATCH v6 5/8] ARM: dts: exynos5250-snow: Add Vbus regulator for USB 3.0

[Vivek Gautam]

Add required fixed-regulator for VBUS supply for USB 3.0
controller phy.

Signed-off-by: Vivek Gautam <gautam.vivek@samsung.com>
---
 arch/arm/boot/dts/exynos5250-snow.dts |   22 ++++++++++++++++++++++
 1 file changed, 22 insertions(+)

diff --git a/arch/arm/boot/dts/exynos5250-snow.dts b/arch/arm/boot/dts/exynos5250-snow.dts
index 1ce1088..fd9b3b3 100644
--- a/arch/arm/boot/dts/exynos5250-snow.dts
+++ b/arch/arm/boot/dts/exynos5250-snow.dts
@@ -37,6 +37,13 @@
 		sd3_bus4: sd3-bus-width4 {
 			samsung,pin-drv = <0>;
 		};
+
+		usb3_vbus_en: usb3-vbus-en {
+			samsung,pins = "gpx2-7";
+			samsung,pin-function = <1>;
+			samsung,pin-pud = <0>;
+			samsung,pin-drv = <0>;
+		};
 	};
 
 	gpio-keys {
@@ -196,6 +203,21 @@
 		};
 	};
 
+	usb3_vbus_reg: regulator-usb3 {
+		compatible = "regulator-fixed";
+		regulator-name = "P5.0V_USB3CON";
+		regulator-min-microvolt = <5000000>;
+		regulator-max-microvolt = <5000000>;
+		gpio = <&gpx2 7 0>;
+		pinctrl-names = "default";
+		pinctrl-0 = <&usb3_vbus_en>;
+		enable-active-high;
+	};
+
+	phy@12100000 {
+		vbus-supply = <&usb3_vbus_reg>;
+	};
+
 	usb@12110000 {
 		samsung,vbus-gpio = <&gpx1 1 0>;
 	};
-- 
1.7.10.4

[PATCH v6 6/8] ARM: dts: exynos5420-peach-pit: Add Vbus regulator for USB 3.0

[Vivek Gautam]

Add required fixed-regulator for VBUS supply for USB 3.0
controller phy.

Signed-off-by: Vivek Gautam <gautam.vivek@samsung.com>
---
 arch/arm/boot/dts/exynos5420-peach-pit.dts |   46 ++++++++++++++++++++++++++++
 1 file changed, 46 insertions(+)

diff --git a/arch/arm/boot/dts/exynos5420-peach-pit.dts b/arch/arm/boot/dts/exynos5420-peach-pit.dts
index fae33dd..8402ec3 100644
--- a/arch/arm/boot/dts/exynos5420-peach-pit.dts
+++ b/arch/arm/boot/dts/exynos5420-peach-pit.dts
@@ -58,6 +58,28 @@
 		pinctrl-0 = <&pwm0_out>;
 		pinctrl-names = "default";
 	};
+
+	usb300_vbus_reg: regulator-usb300 {
+		compatible = "regulator-fixed";
+		regulator-name = "P5.0V_USB3CON0";
+		regulator-min-microvolt = <5000000>;
+		regulator-max-microvolt = <5000000>;
+		gpio = <&gph0 0 0>;
+		pinctrl-names = "default";
+		pinctrl-0 = <&usb300_vbus_en>;
+		enable-active-high;
+	};
+
+	usb301_vbus_reg: regulator-usb301 {
+		compatible = "regulator-fixed";
+		regulator-name = "P5.0V_USB3CON1";
+		regulator-min-microvolt = <5000000>;
+		regulator-max-microvolt = <5000000>;
+		gpio = <&gph0 1 0>;
+		pinctrl-names = "default";
+		pinctrl-0 = <&usb301_vbus_en>;
+		enable-active-high;
+	};
 };
 
 &pinctrl_0 {
@@ -76,6 +98,22 @@
 	};
 };
 
+&pinctrl_3 {
+	usb300_vbus_en: usb300-vbus-en {
+		samsung,pins = "gph0-0";
+		samsung,pin-function = <1>;
+		samsung,pin-pud = <0>;
+		samsung,pin-drv = <0>;
+	};
+
+	usb301_vbus_en: usb301-vbus-en {
+		samsung,pins = "gph0-1";
+		samsung,pin-function = <1>;
+		samsung,pin-pud = <0>;
+		samsung,pin-drv = <0>;
+	};
+};
+
 &rtc {
 	status = "okay";
 };
@@ -137,6 +175,14 @@
 	};
 };
 
+&usbdrd3_0 {
+	vbus-supply = <&usb300_vbus_reg>;
+};
+
+&usbdrd3_1 {
+	vbus-supply = <&usb301_vbus_reg>;
+};
+
 /*
  * Use longest HW watchdog in SoC (32 seconds) since the hardware
  * watchdog provides no debugging information (compared to soft/hard
-- 
1.7.10.4

[PATCH v6 7/8] ARM: dts: exynos5420-smdk5420: Add Vbus regulator for USB 3.0

[Vivek Gautam]

Add required fixed-regulator for VBUS supply for USB 3.0
controller phy.

Signed-off-by: Vivek Gautam <gautam.vivek@samsung.com>
---
 arch/arm/boot/dts/exynos5420-smdk5420.dts |   46 +++++++++++++++++++++++++++++
 1 file changed, 46 insertions(+)

diff --git a/arch/arm/boot/dts/exynos5420-smdk5420.dts b/arch/arm/boot/dts/exynos5420-smdk5420.dts
index 6910485..6053c9f 100644
--- a/arch/arm/boot/dts/exynos5420-smdk5420.dts
+++ b/arch/arm/boot/dts/exynos5420-smdk5420.dts
@@ -140,6 +140,22 @@
 		};
 	};
 
+	pinctrl@14000000 {
+		usb300_vbus_en: usb300-vbus-en {
+			samsung,pins = "gpg0-5";
+			samsung,pin-function = <1>;
+			samsung,pin-pud = <0>;
+			samsung,pin-drv = <0>;
+		};
+
+		usb301_vbus_en: usb301-vbus-en {
+			samsung,pins = "gpg1-4";
+			samsung,pin-function = <1>;
+			samsung,pin-pud = <0>;
+			samsung,pin-drv = <0>;
+		};
+	};
+
 	hdmi@14530000 {
 		status = "okay";
 		hpd-gpio = <&gpx3 7 0>;
@@ -147,6 +163,36 @@
 		pinctrl-0 = <&hdmi_hpd_irq>;
 	};
 
+	usb300_vbus_reg: regulator-usb300 {
+		compatible = "regulator-fixed";
+		regulator-name = "VBUS0";
+		regulator-min-microvolt = <5000000>;
+		regulator-max-microvolt = <5000000>;
+		gpio = <&gpg0 5 0>;
+		pinctrl-names = "default";
+		pinctrl-0 = <&usb300_vbus_en>;
+		enable-active-high;
+	};
+
+	usb301_vbus_reg: regulator-usb301 {
+		compatible = "regulator-fixed";
+		regulator-name = "VBUS1";
+		regulator-min-microvolt = <5000000>;
+		regulator-max-microvolt = <5000000>;
+		gpio = <&gpg1 4 0>;
+		pinctrl-names = "default";
+		pinctrl-0 = <&usb301_vbus_en>;
+		enable-active-high;
+	};
+
+	phy@12100000 {
+		vbus-supply = <&usb300_vbus_reg>;
+	};
+
+	phy@12500000 {
+		vbus-supply = <&usb301_vbus_reg>;
+	};
+
 	i2c_2: i2c@12C80000 {
 		samsung,i2c-sda-delay = <100>;
 		samsung,i2c-max-bus-freq = <66000>;
-- 
1.7.10.4

[PATCH v6 8/8] ARM: dts: exynos5800-peach-pi: Add Vbus regulator for USB 3.0

[Vivek Gautam]

From: Vivek gautam <gautam.vivek@samsung.com>

Add required fixed-regulator for VBUS supply for USB 3.0
controller phy.

Signed-off-by: Vivek Gautam <gautam.vivek@samsung.com>
---
 arch/arm/boot/dts/exynos5800-peach-pi.dts |   46 +++++++++++++++++++++++++++++
 1 file changed, 46 insertions(+)

diff --git a/arch/arm/boot/dts/exynos5800-peach-pi.dts b/arch/arm/boot/dts/exynos5800-peach-pi.dts
index 4ed9ccc..8301bca 100644
--- a/arch/arm/boot/dts/exynos5800-peach-pi.dts
+++ b/arch/arm/boot/dts/exynos5800-peach-pi.dts
@@ -56,6 +56,28 @@
 		pinctrl-0 = <&pwm0_out>;
 		pinctrl-names = "default";
 	};
+
+	usb300_vbus_reg: regulator-usb300 {
+		compatible = "regulator-fixed";
+		regulator-name = "P5.0V_USB3CON0";
+		regulator-min-microvolt = <5000000>;
+		regulator-max-microvolt = <5000000>;
+		gpio = <&gph0 0 0>;
+		pinctrl-names = "default";
+		pinctrl-0 = <&usb300_vbus_en>;
+		enable-active-high;
+	};
+
+	usb301_vbus_reg: regulator-usb301 {
+		compatible = "regulator-fixed";
+		regulator-name = "P5.0V_USB3CON1";
+		regulator-min-microvolt = <5000000>;
+		regulator-max-microvolt = <5000000>;
+		gpio = <&gph0 1 0>;
+		pinctrl-names = "default";
+		pinctrl-0 = <&usb301_vbus_en>;
+		enable-active-high;
+	};
 };
 
 &pinctrl_0 {
@@ -74,6 +96,22 @@
 	};
 };
 
+&pinctrl_3 {
+	usb300_vbus_en: usb300-vbus-en {
+		samsung,pins = "gph0-0";
+		samsung,pin-function = <1>;
+		samsung,pin-pud = <0>;
+		samsung,pin-drv = <0>;
+	};
+
+	usb301_vbus_en: usb301-vbus-en {
+		samsung,pins = "gph0-1";
+		samsung,pin-function = <1>;
+		samsung,pin-pud = <0>;
+		samsung,pin-drv = <0>;
+	};
+};
+
 &rtc {
 	status = "okay";
 };
@@ -134,6 +172,14 @@
 	};
 };
 
+&usbdrd3_0 {
+	vbus-supply = <&usb300_vbus_reg>;
+};
+
+&usbdrd3_1 {
+	vbus-supply = <&usb301_vbus_reg>;
+};
+
 /*
  * Use longest HW watchdog in SoC (32 seconds) since the hardware
  * watchdog provides no debugging information (compared to soft/hard
-- 
1.7.10.4

Re: [PATCH v6 0/8] Enable USB 3.0 support on Exynos5 systems

[Kukjin Kim]

On 05/14/14 23:01, Vivek Gautam wrote:
> From: Vivek gautam<gautam.vivek@samsung.com>
>
> Based on 'for-next' branch of Kgene's linux-samsung tree;
> along with dts patches for USB 2.0 phy[1], and Exynos5800 [2].
> Also based on the latest USB 3.0 DRD phy driver patches posted [3].
>
> Changes from v5:
>   - Added node reference names for new boards.
>   - Removed 'samsung,pmu-offset' porperty from nodes, since with latest driver
>     bindings this is not required.
>   - Added aliase nodes in Exynos5420 to facilitate latest driver bindings.
>   - Added patch to add VBUS regulator for peach-pi board also.
>   - Dropped patches removing older usb-phy driver:
>     usb-phy: samsung-usb3: Remove older phy-samsung-usb3 driver
>     ARM: exynos_defconfig: Remove SAMSUNG_USB3PHY config
>     as appeared in V5 version of this series.
>     Will post them separately after the new driver is merged.
>
> [1] http://www.spinics.net/lists/linux-samsung-soc/msg30494.html
> [2] http://comments.gmane.org/gmane.linux.kernel.samsung-soc/31133
> [3] https://lkml.org/lkml/2014/5/13/285
>
> Vivek Gautam (7):
>    ARM: dts: exynos5420: Enable support for USB 3.0 PHY controller
>    ARM: dts: exynos5420: Enable support for DWC3 controller
>    ARM: dts: exynos5250: Enable support for generic USB DRD phy
>    ARM: dts: exynos5250: Update DWC3 usb controller to use new phy
>      driver
>    ARM: dts: exynos5250-snow: Add Vbus regulator for USB 3.0
>    ARM: dts: exynos5420-peach-pit: Add Vbus regulator for USB 3.0
>    ARM: dts: exynos5420-smdk5420: Add Vbus regulator for USB 3.0
>
> Vivek gautam (1):

should be same guy.

Vivek Gautam ;-)

>    ARM: dts: exynos5800-peach-pi: Add Vbus regulator for USB 3.0
>
>   arch/arm/boot/dts/exynos5250-snow.dts      |   22 ++++++++++++
>   arch/arm/boot/dts/exynos5250.dtsi          |   20 +++++------
>   arch/arm/boot/dts/exynos5420-peach-pit.dts |   46 ++++++++++++++++++++++++
>   arch/arm/boot/dts/exynos5420-smdk5420.dts  |   46 ++++++++++++++++++++++++
>   arch/arm/boot/dts/exynos5420.dtsi          |   54 ++++++++++++++++++++++++++++
>   arch/arm/boot/dts/exynos5800-peach-pi.dts  |   46 ++++++++++++++++++++++++
>   6 files changed, 222 insertions(+), 12 deletions(-)
>
Looks good to me.

Applied 1 to 4 patches, but for others 5 to 8 I need to get any review 
or ack from dt guys.

Thanks,
Kukjin

RE: [PATCH v6 5/8] ARM: dts: exynos5250-snow: Add Vbus regulator for USB 3.0

[Kukjin Kim]

Vivek Gautam wrote:
> 
> Add required fixed-regulator for VBUS supply for USB 3.0
> controller phy.
> 
> Signed-off-by: Vivek Gautam <gautam.vivek@samsung.com>
> ---
>  arch/arm/boot/dts/exynos5250-snow.dts |   22 ++++++++++++++++++++++
>  1 file changed, 22 insertions(+)
> 
> diff --git a/arch/arm/boot/dts/exynos5250-snow.dts
> b/arch/arm/boot/dts/exynos5250-snow.dts
> index 1ce1088..fd9b3b3 100644
> --- a/arch/arm/boot/dts/exynos5250-snow.dts
> +++ b/arch/arm/boot/dts/exynos5250-snow.dts
> @@ -37,6 +37,13 @@
>  		sd3_bus4: sd3-bus-width4 {
>  			samsung,pin-drv = <0>;
>  		};
> +
> +		usb3_vbus_en: usb3-vbus-en {
> +			samsung,pins = "gpx2-7";
> +			samsung,pin-function = <1>;
> +			samsung,pin-pud = <0>;
> +			samsung,pin-drv = <0>;
> +		};
>  	};
> 
>  	gpio-keys {
> @@ -196,6 +203,21 @@
>  		};
>  	};
> 
> +	usb3_vbus_reg: regulator-usb3 {
> +		compatible = "regulator-fixed";
> +		regulator-name = "P5.0V_USB3CON";
> +		regulator-min-microvolt = <5000000>;
> +		regulator-max-microvolt = <5000000>;
> +		gpio = <&gpx2 7 0>;
> +		pinctrl-names = "default";
> +		pinctrl-0 = <&usb3_vbus_en>;
> +		enable-active-high;
> +	};
> +
> +	phy@12100000 {
> +		vbus-supply = <&usb3_vbus_reg>;
> +	};
> +
>  	usb@12110000 {
>  		samsung,vbus-gpio = <&gpx1 1 0>;
>  	};
> --
> 1.7.10.4

Looks OK to me and applied 5 to 8 as well.

Thanks,
Kukjin