Re: [PATCH V2 1/2] dt-bindings: Add byteswap order to chrontel ch7033

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Hi Chris,

Thank you for the patch.

On Fri, Sep 02, 2022 at 10:39:05AM -0500, Chris Morgan wrote:
> From: Chris Morgan <macromorgan@xxxxxxxxxxx>
> 
> Update dt-binding documentation to add support for setting byteswap of
> chrontel ch7033.
> 
> New property name of chrontel,byteswap added to set the byteswap order.
> This property is optional.
> 
> Signed-off-by: Chris Morgan <macromorgan@xxxxxxxxxxx>
> Reviewed-by: Robert Foss <robert.foss@xxxxxxxxxx>
> ---
>  .../bindings/display/bridge/chrontel,ch7033.yaml    | 13 +++++++++++++
>  1 file changed, 13 insertions(+)
> 
> diff --git a/Documentation/devicetree/bindings/display/bridge/chrontel,ch7033.yaml b/Documentation/devicetree/bindings/display/bridge/chrontel,ch7033.yaml
> index bb6289c7d375..984b90893583 100644
> --- a/Documentation/devicetree/bindings/display/bridge/chrontel,ch7033.yaml
> +++ b/Documentation/devicetree/bindings/display/bridge/chrontel,ch7033.yaml
> @@ -14,6 +14,19 @@ properties:
>    compatible:
>      const: chrontel,ch7033
>  
> +  chrontel,byteswap:
> +    $ref: /schemas/types.yaml#/definitions/uint8
> +    enum:
> +      - 0  # BYTE_SWAP_RGB
> +      - 1  # BYTE_SWAP_RBG
> +      - 2  # BYTE_SWAP_GRB
> +      - 3  # BYTE_SWAP_GBR
> +      - 4  # BYTE_SWAP_BRG
> +      - 5  # BYTE_SWAP_BGR
> +    description: |
> +      Set the byteswap value of the bridge. This is optional and if not
> +      set value of BYTE_SWAP_BGR is used.

I don't think this belongs to the device tree. The source of data
connected to the CH7033 input could use different formats. This
shouldn't be hardcoded, but queried at runtime, using the input and
output media bus formats infrastructure that the DRM bridge framework
includes.

> +
>    reg:
>      maxItems: 1
>      description: I2C address of the device

-- 
Regards,

Laurent Pinchart



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