Re: [PATCH 3/3] [RFC] dt-bindings: display: bridge: nxp,tda998x: Convert to json-schema

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On Fri, Oct 29, 2021 at 10:28:22AM +0200, Geert Uytterhoeven wrote:
> Hi Russell,
> 
> Thanks for your comments!
> 
> No, you can still use port:
> 
> +oneOf:
> +  - required:
> +      - port
> +  - required:
> +      - ports
> 
> When using ports, no further requirements are set, but perhaps port@0
> should be made required in that case?

Maybe I don't understand the binding description then, but to me it
looks like you require both port@0 and port@1.

The reality of the driver is that it makes almost no use of the graph
itself, except via drm_of_find_possible_crtcs() to find the connected
CRTCs. If it is connected to an I2S source, then it probably needs a
port specification for that. If someone wants to describe the HDMI
connector (which I don't see any point in) then they likely need a
port specification for that too. However, the driver itself doesn't
care about any of those.

So, describing the port nodes makes no sense.

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