summaryrefslogtreecommitdiffstats
path: root/Documentation/devicetree/bindings/phy/rockchip-usb-phy.txt
diff options
context:
space:
mode:
Diffstat (limited to '')
-rw-r--r--Documentation/devicetree/bindings/phy/rockchip-usb-phy.txt52
1 files changed, 52 insertions, 0 deletions
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 000000000..4ed569046
--- /dev/null
+++ b/Documentation/devicetree/bindings/phy/rockchip-usb-phy.txt
@@ -0,0 +1,52 @@
+ROCKCHIP USB2 PHY
+
+Required properties:
+ - compatible: matching the soc type, one of
+ "rockchip,rk3066a-usb-phy"
+ "rockchip,rk3188-usb-phy"
+ "rockchip,rk3288-usb-phy"
+ - #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.
+
+Sub-nodes
+required properties:
+- #phy-cells: should be 0
+- reg: PHY configure reg address offset in GRF
+ "0x320" - for PHY attach to OTG controller
+ "0x334" - for PHY attach to HOST0 controller
+ "0x348" - for PHY attach to HOST1 controller
+
+Optional Properties:
+- clocks : phandle + clock specifier for the phy clocks
+- clock-names: string, clock name, must be "phyclk"
+- #clock-cells: for users of the phy-pll, should be 0
+- reset-names: Only allow the following entries:
+ - phy-reset
+- resets: Must contain an entry for each entry in reset-names.
+- vbus-supply: power-supply phandle for vbus power source
+
+Example:
+
+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>;
+ };
+ };
+};