linux-kernel - Re: [PATCH v3 1/3] dt-bindings:drm/bridge:anx7625:add HDCP support flag and swing reg

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Date:   Mon, 25 Jan 2021 09:41:43 -0600
From:   Rob Herring <robh@...nel.org>
To:     Xin Ji <xji@...logixsemi.com>
Cc:     David Airlie <airlied@...ux.ie>,
        Nicolas Boichat <drinkcat@...gle.com>,
        Hsin-Yi Wang <hsinyi@...omium.org>,
        Daniel Vetter <daniel@...ll.ch>,
        Sam Ravnborg <sam@...nborg.org>,
        Laurent Pinchart <laurent.pinchart+renesas@...asonboard.com>,
        Maxime Ripard <mripard@...nel.org>,
        Mark Brown <broonie@...nel.org>,
        Ricardo Cañuelo 
        <ricardo.canuelo@...labora.com>, dri-devel@...ts.freedesktop.org,
        devicetree@...r.kernel.org, Sheng Pan <span@...logixsemi.com>,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH v3 1/3] dt-bindings:drm/bridge:anx7625:add HDCP support
 flag and swing reg

On Mon, Jan 25, 2021 at 07:12:21PM +0800, Xin Ji wrote:
> Add 'bus-type' and 'data-lanes' define for port0, add HDCP support
> flag and DP tx lane0 and lane1 swing register array define.
> 
> Signed-off-by: Xin Ji <xji@...logixsemi.com>
> ---
>  .../bindings/display/bridge/analogix,anx7625.yaml  | 57 ++++++++++++++++++++--
>  1 file changed, 54 insertions(+), 3 deletions(-)
> 
> diff --git a/Documentation/devicetree/bindings/display/bridge/analogix,anx7625.yaml b/Documentation/devicetree/bindings/display/bridge/analogix,anx7625.yaml
> index 60585a4..3b1cbe0 100644
> --- a/Documentation/devicetree/bindings/display/bridge/analogix,anx7625.yaml
> +++ b/Documentation/devicetree/bindings/display/bridge/analogix,anx7625.yaml
> @@ -34,23 +34,69 @@ properties:
>      description: used for reset chip control, RESET_N pin B7.
>      maxItems: 1
>  
> +  analogix,lane0-swing:
> +    $ref: /schemas/types.yaml#/definitions/uint32-array
> +    description:
> +      an array of swing register setting for DP tx lane0 PHY, please don't
> +      add this property, or contact vendor.
> +
> +  analogix,lane1-swing:
> +    $ref: /schemas/types.yaml#/definitions/uint32-array
> +    description:
> +      an array of swing register setting for DP tx lane1 PHY, please don't
> +      add this property, or contact vendor.
> +
> +  analogix,hdcp-support:
> +    $ref: /schemas/types.yaml#/definitions/uint32
> +    description: indicate the DP tx HDCP support or not.

Sounds like a boolean.

> +
>    ports:
>      type: object
> +    additionalProperties: false
>  
>      properties:
>        port@0:
>          type: object
>          description:
> -          Video port for MIPI DSI input.
> +          Video port for MIPI input.

You're going to need to rebase this one drm-misc-next which uses the 
graph schema now.

> +
> +        properties:
> +          endpoint:
> +            type: object
> +            additionalProperties: false
> +
> +            # Properties described in
> +            # Documentation/devicetree/bindings/media/video-interfaces.txt
> +            properties:
> +              remote-endpoint: true
> +              bus-type: true
> +              data-lanes: true
> +
> +            required:
> +              - remote-endpoint
> +
> +        required:
> +          - endpoint
>  
>        port@1:
>          type: object
>          description:
>            Video port for panel or connector.
>  
> +        properties:
> +          endpoint:
> +            type: object
> +            additionalProperties: false
> +
> +            required:
> +              - remote-endpoint
> +
> +        required:
> +          - endpoint
> +
>      required:
> -        - port@0
> -        - port@1
> +      - port@0
> +      - port@1
>  
>  required:
>    - compatible
> @@ -73,6 +119,10 @@ examples:
>              enable-gpios = <&pio 45 GPIO_ACTIVE_HIGH>;
>              reset-gpios = <&pio 73 GPIO_ACTIVE_HIGH>;
>  
> +            analogix,lane0-swing = <0x14 0x54 0x64 0x74 0x29 0x7b 0x77 0x5b>;
> +            analogix,lane1-swing = <0x14 0x54 0x64 0x74 0x29 0x7b 0x77 0x5b>;
> +            analogix,hdcp-support = <0>;
> +
>              ports {
>                  #address-cells = <1>;
>                  #size-cells = <0>;
> @@ -81,6 +131,7 @@ examples:
>                      reg = <0>;
>                      anx7625_in: endpoint {
>                          remote-endpoint = <&mipi_dsi>;
> +                        bus-type = <5>;
>                      };
>                  };
>  
> -- 
> 2.7.4
>