Update the DT bindings documentation to support usb role switch
for USB Type-C connector using USB role switch class framework.
Signed-off-by: Biju Das <biju.das@xxxxxxxxxxxxxx>
---
V5-->V6
* Updated description
* Added usb-role-switch-property
V4-->V5
* No Change
V3-->V4
* No Change
V2-->V3
* Added optional renesas,usb-role-switch property.
V1-->V2
* Added usb-role-switch-property
* Updated the example with usb-role-switch property.
---
.../devicetree/bindings/usb/renesas_usb3.txt | 26 ++++++++++++++++++++++
1 file changed, 26 insertions(+)
diff --git a/Documentation/devicetree/bindings/usb/renesas_usb3.txt b/Documentation/devicetree/bindings/usb/renesas_usb3.txt
index 35039e7..ea6c63c 100644
--- a/Documentation/devicetree/bindings/usb/renesas_usb3.txt
+++ b/Documentation/devicetree/bindings/usb/renesas_usb3.txt
@@ -22,6 +22,11 @@ Required properties:
Optional properties:
- phys: phandle + phy specifier pair
- phy-names: must be "usb"
+ - usb-role-switch: support role switch. see usb/generic.txt
+
+Sub-nodes:
+The port would be added as a subnode if the "usb-role-switch" property is used.
+ see graph.txt
Example of R-Car H3 ES1.x:
usb3_peri0: usb@ee020000 {
@@ -39,3 +44,24 @@ Example of R-Car H3 ES1.x:
interrupts = <GIC_SPI 100 IRQ_TYPE_LEVEL_HIGH>;
clocks = <&cpg CPG_MOD 327>;
};
+
+Example of RZ/G2E:
+ usb3_peri0: usb@ee020000 {
+ compatible = "renesas,r8a774c0-usb3-peri",
+ "renesas,rcar-gen3-usb3-peri";
+ reg = <0 0xee020000 0 0x400>;
+ interrupts = <GIC_SPI 104 IRQ_TYPE_LEVEL_HIGH>;
+ clocks = <&cpg CPG_MOD 328>;
+ companion = <&xhci0>;
+ usb-role-switch;
+
+ port {
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ usb3peri_role_switch: endpoint@0 {
+ reg = <0>;
+ remote-endpoint = <&hd3ss3220_ep>;
+ };
+ };
+ };
--
2.7.4
