Re: [PATCH v4 1/9] dt-bindings: soc: renesas: Document RZ/V2H EVK board

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On 28/08/2024 22:09, Lad, Prabhakar wrote:
> Hi Krzysztof,
> 
> On Wed, Aug 28, 2024 at 3:34 PM Krzysztof Kozlowski <krzk@xxxxxxxxxx> wrote:
>>
>> On 28/08/2024 14:41, Prabhakar wrote:
>>> From: Lad Prabhakar <prabhakar.mahadev-lad.rj@xxxxxxxxxxxxxx>
>>>
>>> Add "renesas,rzv2h-evk" which targets the Renesas RZ/V2H ("R9A09G057")
>>> EVK board.
>>>
>>> Signed-off-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@xxxxxxxxxxxxxx>
>>> Acked-by: Rob Herring (Arm) <robh@xxxxxxxxxx>
>>> ---
>>> Hi Rob, I have restored your Ack with the below change, I hope that's OK.
>>>
>>> Cheers, Prabhakar
>>>
>>> v1->v4
>>> - Updated 'renesas,gp-evk # GP-EVK' -> 'renesas,rzv2h-evk # RZ/V2H EVK'
>>> - Updated commit message
>>>
>>> v1: https://patchwork.kernel.org/project/linux-renesas-soc/patch/20240724094707.569596-2-prabhakar.mahadev-lad.rj@xxxxxxxxxxxxxx/
>>> ---
>>>  Documentation/devicetree/bindings/soc/renesas/renesas.yaml | 2 ++
>>>  1 file changed, 2 insertions(+)
>>>
>>> diff --git a/Documentation/devicetree/bindings/soc/renesas/renesas.yaml b/Documentation/devicetree/bindings/soc/renesas/renesas.yaml
>>> index d582992aaf0e..b7acb65bdecd 100644
>>> --- a/Documentation/devicetree/bindings/soc/renesas/renesas.yaml
>>> +++ b/Documentation/devicetree/bindings/soc/renesas/renesas.yaml
>>> @@ -527,6 +527,8 @@ properties:
>>>
>>>        - description: RZ/V2H(P) (R9A09G057)
>>>          items:
>>> +          - enum:
>>> +              - renesas,rzv2h-evk # RZ/V2H EVK
>>>            - enum:
>>
>> This is unusual pattern for me, but maybe I miss here something. Commit
>> message does not explain why EXISTING boards needs to be changed. What
>> does it mean "rzv2h-evk targets evk board"? How does this work?
>>
> This commit is not changing the existing boards. The entries below the
> addition are the RZ/V2H(P) SoC variants. Here we are just adding the
> board entry which is based on RZ/V2H SoC [0].

Then it is even more surprising to see there entries which were not
boards. What's in this file in such case?

Which DTS file it matches?

> In the board DTS file it will be used as "compatible =
> "renesas,rzv2h-evk", "renesas,r9a09g057h44", "renesas,r9a09g057";",
> see [1].
> 
>                ^^                              ^^
>                  ^^
> 
>               Board variant             SoC  variant
>     Generic RZ/V2H SoC
> 
>> You have EVK board and now it is not valid anymore?
>>
> No this is not the case.
Krzysztof





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