The exynos5250-snow has a SMSC USB3503 connected in
hardware only mode like a PHY. Enable support for it,
and add necessary 'reset-gpio' for it.
This is in correspondance to similar patch by Mark Brown
7c1b0ec ARM: dts: Enable USB hub on Arndale
Signed-off-by: Vivek Gautam <gautam.vivek@xxxxxxxxxxx>
---
Based on 'for-next' branch of kgene's linux-samsung tree.
arch/arm/boot/dts/exynos5250-pinctrl.dtsi | 7 +++++++
arch/arm/boot/dts/exynos5250-snow.dts | 14 ++++++++++++++
2 files changed, 21 insertions(+)
diff --git a/arch/arm/boot/dts/exynos5250-pinctrl.dtsi b/arch/arm/boot/dts/exynos5250-pinctrl.dtsi
index 9a49e68..bd8c8f1 100644
--- a/arch/arm/boot/dts/exynos5250-pinctrl.dtsi
+++ b/arch/arm/boot/dts/exynos5250-pinctrl.dtsi
@@ -706,6 +706,13 @@
samsung,pin-pud = <0>;
samsung,pin-drv = <0>;
};
+
+ usb_hub_reset: usb-hub-reset {
+ samsung,pins = "gpe1-0";
+ samsung,pin-function = <1>;
+ samsung,pin-pud = <0>;
+ samsung,pin-drv = <0>;
+ };
};
pinctrl@10d10000 {
diff --git a/arch/arm/boot/dts/exynos5250-snow.dts b/arch/arm/boot/dts/exynos5250-snow.dts
index 1ce1088..2e48f27 100644
--- a/arch/arm/boot/dts/exynos5250-snow.dts
+++ b/arch/arm/boot/dts/exynos5250-snow.dts
@@ -200,6 +200,20 @@
samsung,vbus-gpio = <&gpx1 1 0>;
};
+ usb_hub_bus {
+ compatible = "simple-bus";
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ // SMSC USB3503 connected in hardware only mode as a PHY
+ usb_hub {
+ compatible = "smsc,usb3503a";
+ reset-gpios = <&gpe1 0 1>;
+ pinctrl-0 = <&usb_hub_reset>;
+ pinctrl-names = "default";
+ };
+ };
+
fixed-rate-clocks {
xxti {
compatible = "samsung,clock-xxti";
--
1.7.10.4
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