Re: [PATCH v3 2/5] dt-bindings: display: tegra: nvidia,tegra20-dc: Add parallel RGB output port node

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On Mon, Aug 07, 2023 at 05:35:12PM +0300, Svyatoslav Ryhel wrote:
> From: Maxim Schwalm <maxim.schwalm@xxxxxxxxx>
> 
> Either this node, which is optional, or the nvidia,panel property can be
> present.
> 
> Signed-off-by: Maxim Schwalm <maxim.schwalm@xxxxxxxxx>
> Signed-off-by: Svyatoslav Ryhel <clamor95@xxxxxxxxx>
> ---
>  .../display/tegra/nvidia,tegra20-dc.yaml      | 31 +++++++++++++++++++
>  1 file changed, 31 insertions(+)
> 
> diff --git a/Documentation/devicetree/bindings/display/tegra/nvidia,tegra20-dc.yaml b/Documentation/devicetree/bindings/display/tegra/nvidia,tegra20-dc.yaml
> index 69be95afd562..102304703062 100644
> --- a/Documentation/devicetree/bindings/display/tegra/nvidia,tegra20-dc.yaml
> +++ b/Documentation/devicetree/bindings/display/tegra/nvidia,tegra20-dc.yaml
> @@ -127,6 +127,37 @@ allOf:
>                $ref: /schemas/types.yaml#/definitions/phandle
>                description: phandle of a display panel
>  
> +            port:
> +              $ref: /schemas/graph.yaml#/$defs/port-base
> +              description: Parallel RGB output port
> +
> +              properties:
> +                endpoint:
> +                  $ref: /schemas/media/video-interfaces.yaml#

Just to make sure, what properties are you using from this? Usually 
we'll list them though not a hard requirement. If none, then you just 
need to ref graph.yaml#/properties/port instead and can drop the rest.

> +                  unevaluatedProperties: false
> +
> +              unevaluatedProperties: false

In the indented cases, it's easier to read if this is before 
properties/patternProperties.

> +
> +          anyOf:
> +            - if:
> +                not:
> +                  properties:
> +                    nvidia,panel: false
> +              then:
> +                not:
> +                  properties:
> +                    port: true
> +            - if:
> +                not:
> +                  properties:
> +                    port: false
> +              then:
> +                not:
> +                  properties:
> +                    nvidia,panel: true

I would prefer to drop this and mark "nvidia,panel" as deprecated. 
Eventually I plan to add a mode to the tools to warn on using deprecated 
properties. Having both could be perfectly fine too. You have the 
"nvidia,panel" for compatibility with an old OS version and 'port' to 
work with newer users.

> +
> +          additionalProperties: false

Move this up too.

Rob



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