On Wed, Apr 18, 2018 at 05:09:56PM +0900, Yoshihiro Shimoda wrote:
> This patch adds a new documentation for a usb role switch driver.
> The usb role switch framework will parse this to get each device
> pointer by using each remote-endpoint.
Bindings describe h/w, not drivers. This doesn't look like a h/w device.
>
> Signed-off-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@xxxxxxxxxxx>
> ---
> .../devicetree/bindings/usb/usb-role-switch.txt | 42 ++++++++++++++++++++++
> 1 file changed, 42 insertions(+)
> create mode 100644 Documentation/devicetree/bindings/usb/usb-role-switch.txt
>
> diff --git a/Documentation/devicetree/bindings/usb/usb-role-switch.txt b/Documentation/devicetree/bindings/usb/usb-role-switch.txt
> new file mode 100644
> index 0000000..941d582
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/usb/usb-role-switch.txt
> @@ -0,0 +1,42 @@
> +USB role switch driver
> +
> +Optional nodes:
> +- If a role switch driver has OF graph ports, the usb role switch framework
> + will parse the remote-endpoints in usb_role_switch_register(). The OF graph
> + port number as follows:
> + 0: USB 2.0 host port
> + 1: USB 3.0 host port
> + 2: UDC port
> +
> +For example:
> + usb-role-sw {
> +
> + ports {
> + #address-cells = <1>;
> + #size-cells = <0>;
> +
> + port@0 {
> + reg = <0>;
> +
> + usb2_host_sw0: endpoint {
> + remote-endpoint = <&usb2_host_ep0>;
> + };
> + };
> +
> + port@1 {
> + reg = <1>;
> +
> + usb3_host_sw0: endpoint {
> + remote-endpoint = <&usb3_host_ep0>;
> + };
> + };
> +
> + port@2 {
> + reg = <2>;
> +
> + udc_sw0: endpoint {
> + remote-endpoint = <&udc_ep0>;
> + };
> + };
> + };
> + };
> --
> 1.9.1
>
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