Add DT binding document for stingray usb phy driver.
Signed-off-by: Srinath Mannam <[email protected]>
Reviewed-by: Ray Jui <[email protected]>
---
.../bindings/phy/brcm,stingray-usb-phy.txt | 72 ++++++++++++++++++++++
1 file changed, 72 insertions(+)
create mode 100644
Documentation/devicetree/bindings/phy/brcm,stingray-usb-phy.txt
diff --git a/Documentation/devicetree/bindings/phy/brcm,stingray-usb-phy.txt
b/Documentation/devicetree/bindings/phy/brcm,stingray-usb-phy.txt
new file mode 100644
index 0000000..22ff1db
--- /dev/null
+++ b/Documentation/devicetree/bindings/phy/brcm,stingray-usb-phy.txt
@@ -0,0 +1,72 @@
+BROADCOM STINGRAY USB PHY
+
+Required properties:
+ - compatible : should be one of the listed compatibles
+ - "brcm,sr-u3h-u2drd-phy"
+ - "brcm,sr-u3drd-phy"
+ - reg: offset and length of the PHY blocks registers
+ two base address and length should be passed.
+ - reg-names: should be from "drdu3","usb3h", "drdu2"
+ "drdu3" for compatible string "brcm,sr-u3drd-phy"
+ "usb3h" and "drdu2" for compatible string "brcm,sr-u3h-u2drd-phy"
+ - address-cells: should be 1
+ - size-cells: should be 0
+
+Sub-nodes:
+ Each port's PHY should be represented as a sub-node.
+
+Sub-nodes required properties:
+ - reg: the PHY port number
+ port numbers of sr-u3h-u2drd-phy should be as
+ - USB3H super speed port is 0
+ - DRDU2 is 1
+ - USB3H high speed port is 2
+ port numbers of sr-u3drd-phy should be as
+ - DRDU3 super speed port is 0
+ - DRDU3 high speed port is 1
+ - phy-cells: generic PHY binding; must be 1
+ The first argument of phy-cell represents the PHY mode in the requested
node
+ as either host mode or device mode.
+ for host mode is 1 and device mode is 2.
+
+Refer to phy/phy-bindings.txt for the generic PHY binding properties
+
+Example:
+ usbphy0: usb-phy@68500000 {
+ compatible = "brcm,sr-u3drd-phy";
+ reg = <0x68500000 0x100>;
+ reg-names = "drdu3";
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ usb0_phy0: phy@0 {
+ reg = <0>;
+ #phy-cells = <1>;
+ };
+ usb0_phy1: phy@1 {
+ reg = <1>;
+ #phy-cells = <1>;
+ };
+ };
+
+ usbphy1: usb-phy@68520000 {
+ compatible = "brcm,sr-u3h-u2drd-phy";
+ reg = <0x68510000 0x100>,
+ <0x68520000 0x100>;
+ reg-names = "usb3h", "drdu2";
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ usb1_phy0: phy@0 {
+ reg = <0>;
+ #phy-cells = <1>;
+ };
+ usb1_phy1: phy@1 {
+ reg = <1>;
+ #phy-cells = <1>;
+ };
+ usb1_phy2: phy@2 {
+ reg = <2>;
+ #phy-cells = <1>;
+ };
+ };
--
2.7.4
