Commit d1756ac6 authored by Dmitry Baryshkov's avatar Dmitry Baryshkov Committed by Greg Kroah-Hartman
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dt-bindings: connector: usb: add altmodes description 



Add description of the USB-C AltModes supported on the particular USB-C
connector. This is required for devices like Qualcomm Robotics RB5,
which have no other way to express alternative modes supported by the
hardware platform.

Reviewed-by: default avatarRob Herring <robh@kernel.org>
Signed-off-by: default avatarDmitry Baryshkov <dmitry.baryshkov@linaro.org>
Link: https://lore.kernel.org/r/20231204020303.2287338-2-dmitry.baryshkov@linaro.org


Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent 7516f86a

Documentation/devicetree/bindings/connector/usb-connector.yaml

+33 −0
Original line number Diff line number Diff line
@@ -171,6 +171,32 @@ properties: 
      offer the power, Capability Mismatch is set. Required for power sink and

      power dual role.



  altmodes:

    type: object

    description: List of Alternative Modes supported by the schematics on the

      particular device. This is only necessary if there are no other means to

      discover supported alternative modes (e.g. through the UCSI firmware

      interface).



    additionalProperties: false



    patternProperties:

      "^(displayport)$":

        type: object

        description:

          A single USB-C Alternative Mode as supported by the USB-C connector logic.



        additionalProperties: false



        properties:

          svid:

            $ref: /schemas/types.yaml#/definitions/uint16

            description: Unique value assigned by USB-IF to the Vendor / AltMode.

            enum: [ 0xff01 ]

          vdo:

            $ref: /schemas/types.yaml#/definitions/uint32

            description: VDO returned by Discover Modes USB PD command.



  port:

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

    description: OF graph bindings modeling a data bus to the connector, e.g.
@@ -289,6 +315,13 @@ examples: 
            compatible = "usb-c-connector";

            label = "USB-C";



            altmodes {

                displayport {

                    svid = /bits/ 16 <0xff01>;

                    vdo = <0x00001c46>;

                };

            };



            ports {

                #address-cells = <1>;

                #size-cells = <0>;