[RFC PATCH 3/4] dt-bindings: panel: Introduce dual-link LVDS panel

[Aradhya Bhatia]

Hi Krzysztof,

On 03-Jan-23 16:58, Krzysztof Kozlowski wrote:
> On 03/01/2023 12:02, Aradhya Bhatia wrote:
>> But this is throwing an error. I am confused what else could be done.
>> Can you please suggest what might be a more accurate check here?
>>
>>>
>>>> +              required:
>>>> +                - dual-lvds-odd-pixels
>>>> +        then:
>>>> +          properties:
>>>> +            port at 1:
>>>> +              properties:
>>>> +                dual-lvds-even-pixels: true
>>>> +                dual-lvds-odd-pixels: false
>>>
>>> Why do you need this? Your oneOf before already solves it.
>>
>> I agree with your comment here. It makes sense to only have
>>
>> 	dual-lvds-even-pixels: true
>>
>> and have the oneOf condition take care of the other. But, I just tested
>> this and it was unable to pick-up this intentionally-added error.
>>
>> I added 'dual-lvds-odd-pixels' property to both the nodes, and
>> dt_binding_check passes successfully (which it should have not.)
>>
>> Instead, if I only keep this,
>>
>> 	dual-lvds-odd-pixels: false
>>
>> then the dt_binding_check detects the error as it should.
>>
>> Regardless, I am curious why the first method doesn't work. Will try to
>> explore more on that.
> 
> The check for presence of properties is only against required:, but you
> added there properties. Like this:
> 
> https://elixir.bootlin.com/linux/v5.17-rc2/source/Documentation/devicetree/bindings/mfd/samsung,s5m8767.yaml#L155
> 
> 
> Other way is to drop your both oneOf and entire allOf from ports and use:
> 
> oneOf:
>    - properties:
>        ports:
>          $ref: /schemas/graph.yaml#/properties/ports
>          properties:
>            port at 0:
>              required:
>                - dual-lvds-odd-pixels
>            port at 1:
>              required:
>                - dual-lvds-even-pixels
>    - properties:
>        ports:
>          $ref: /schemas/graph.yaml#/properties/ports
>          properties:
>            port at 1:
>              required:
>                - dual-lvds-odd-pixels
>            port at 0:
>              required:
>                - dual-lvds-even-pixels
> 

Thank you for the suggestions.
I tested the both of them, and they seem to be working as expected.

V2 will reflect all the required fixes.


Regards
Aradhya