[PATCH v3 2/5] Documentation: bindings: add doc for the Rockchip usb PHY

[Yunzhi Li]

Document the bindings of the Rockchip usb PHY driver.

Signed-off-by: Yunzhi Li <lyz@xxxxxxxxxxxxxx>
---

Changes in v3: None

 .../devicetree/bindings/phy/rockchip-usb-phy.txt   | 22 ++++++++++++++++++++++
 1 file changed, 22 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/phy/rockchip-usb-phy.txt

diff --git a/Documentation/devicetree/bindings/phy/rockchip-usb-phy.txt b/Documentation/devicetree/bindings/phy/rockchip-usb-phy.txt
new file mode 100644
index 0000000..4574696
--- /dev/null
+++ b/Documentation/devicetree/bindings/phy/rockchip-usb-phy.txt
@@ -0,0 +1,22 @@
+ROCKCHIP USB2 PHY
+
+Required properties:
+ - compatible: rockchip,rk3288-usb-phy
+ - rockchip,grf : phandle to the syscon managing the "general
+   register files"
+ - #phy-cells: must be 1
+
+Optional Properties:
+ - clocks : phandle + clock specifier for the phy clocks
+ - clock-names :
+		"usbphy0" - PHY clock for OTG controller
+		"usbphy1" - PHY clock for HOST0 controller
+		"usbphy2" - PHY clock for HOST1 controller
+
+Example:
+
+usbphy: phy {
+	#phy-cells = <1>;
+	compatible = "rockchip,rk3288-usb-phy";
+	rockchip,grf = <&grf>;
+};
-- 
2.0.0


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