diff mbox series

[RESEND,v7,3/3] dt-bindings: usb: renesas_usb3: Document usb role switch support

Message ID 1567584941-13690-4-git-send-email-biju.das@bp.renesas.com (mailing list archive)
State Mainlined
Commit 4aec2393f51418e63dd1e9090063aeda5a6b03d7
Delegated to: Geert Uytterhoeven
Headers show
Series Add USB3.0 and TI HD3SS3220 driver support | expand

Commit Message

Biju Das Sept. 4, 2019, 8:15 a.m. UTC 
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@bp.renesas.com>
Reviewed-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
Reviewed-by: Rob Herring <robh@kernel.org>
---
 V7--> V7 RESEND
  * Rebased to the new file name renesas,usb3-peri.txt.
  * Added Reviewed-by tags of Rob and Shimoda-San.
 V6-->V7
  * Incorporated shimoda-san's review comments.
    (https://patchwork.kernel.org/patch/10944631/)
 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-peri.txt  | 23 ++++++++++++++++++++++
 1 file changed, 23 insertions(+)
diff mbox series

Patch

diff --git a/Documentation/devicetree/bindings/usb/renesas,usb3-peri.txt b/Documentation/devicetree/bindings/usb/renesas,usb3-peri.txt
index 35039e7..5eecfbc 100644
--- a/Documentation/devicetree/bindings/usb/renesas,usb3-peri.txt
+++ b/Documentation/devicetree/bindings/usb/renesas,usb3-peri.txt
@@ -22,6 +22,12 @@  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:
+- any connector to the data bus of this controller should be modelled using the
+  OF graph bindings specified in bindings/graph.txt, if the "usb-role-switch"
+  property is used.
 
 Example of R-Car H3 ES1.x:
 	usb3_peri0: usb@ee020000 {
@@ -39,3 +45,20 @@  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 {
+			usb3_role_switch: endpoint {
+				remote-endpoint = <&hd3ss3220_ep>;
+			};
+		};
+	};