Commit c44d9dab authored by Stephen Boyd's avatar Stephen Boyd Committed by Greg Kroah-Hartman
Browse files

dt-bindings: usb: Add downstream facing ports to realtek binding 



Add a graph with 4 output endpoints to this hub binding to support the
scenario where a downstream facing port is connected to a device that
isn't a connector or a USB device with a VID:PID. This will be used to
connect downstream facing ports to USB type-c switches so the USB
superspeed and high speed lanes can be put onto USB connectors.

Cc: Rob Herring <robh+dt@kernel.org>
Cc: Krzysztof Kozlowski <krzysztof.kozlowski+dt@linaro.org>
Cc: Conor Dooley <conor+dt@kernel.org>
Cc: Matthias Kaehlcke <mka@chromium.org>
Cc: linux-usb@vger.kernel.org
Cc: devicetree@vger.kernel.org
Cc: Pin-yen Lin <treapking@chromium.org>
Cc: maciek swiech <drmasquatch@google.com>
Signed-off-by: default avatarStephen Boyd <swboyd@chromium.org>
Reviewed-by: default avatarRob Herring <robh@kernel.org>
Link: https://lore.kernel.org/r/20240223005823.3074029-2-swboyd@chromium.org


Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent 966bf794

Documentation/devicetree/bindings/usb/realtek,rts5411.yaml

+55 −0
Original line number Diff line number Diff line
@@ -21,6 +21,12 @@ properties: 


  reg: true



  '#address-cells':

    const: 1



  '#size-cells':

    const: 0



  vdd-supply:

    description:

      phandle to the regulator that provides power to the hub.
@@ -30,6 +36,36 @@ properties: 
    description:

      phandle to the peer hub on the controller.



  ports:

    $ref: /schemas/graph.yaml#/properties/ports



    properties:

      port@1:

        $ref: /schemas/graph.yaml#/properties/port

        description:

          1st downstream facing USB port



      port@2:

        $ref: /schemas/graph.yaml#/properties/port

        description:

          2nd downstream facing USB port



      port@3:

        $ref: /schemas/graph.yaml#/properties/port

        description:

          3rd downstream facing USB port



      port@4:

        $ref: /schemas/graph.yaml#/properties/port

        description:

          4th downstream facing USB port



patternProperties:

  '^.*@[1-4]$':

    description: The hard wired USB devices

    type: object

    $ref: /schemas/usb/usb-device.yaml



required:

  - peer-hub

  - compatible
@@ -50,6 +86,13 @@ examples: 
            reg = <1>;

            vdd-supply = <&pp3300_hub>;

            peer-hub = <&hub_3_0>;

            #address-cells = <1>;

            #size-cells = <0>;

            /* USB 2.0 device on port 2 */

            device@2 {

                compatible = "usb123,4567";

                reg = <2>;

            };

        };



        /* 3.0 hub on port 2 */
@@ -58,5 +101,17 @@ examples: 
            reg = <2>;

            vdd-supply = <&pp3300_hub>;

            peer-hub = <&hub_2_0>;



            ports {

                #address-cells = <1>;

                #size-cells = <0>;

                /* Type-A connector on port 4 */

                port@4 {

                    reg = <4>;

                    endpoint {

                      remote-endpoint = <&usb_a0_ss>;

                    };

                };

            };

        };

    };