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dt-bindings: usb: renesas_usb3: Document usb role switch support

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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>
Link: https://lore.kernel.org/r/1567584941-13690-4-git-send-email-biju.das@bp.renesas.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Biju Das 2019-09-04 09:15:41 +01:00 committed by Greg Kroah-Hartman
parent 1c48c759ef
commit 4aec2393f5
1 changed files with 23 additions and 0 deletions
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23
Documentation/devicetree/bindings/usb/renesas,usb3-peri.txt
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@ -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>;
};
};
};