[PATCH v3 05/12] dt-bindings: phy: renesas,usb2-phy: Add renesas,sysc-signals

[Krzysztof Kozlowski]

On 22/05/2025 14:46, Krzysztof Kozlowski wrote:
>>>>  
>>>> +  - if:
>>>> +      properties:
>>>> +        compatible:
>>>> +          contains:
>>>> +            const: renesas,usb2-phy-r9a08g045
>>>> +    then:
>>>> +      required:
>>>> +        - renesas,sysc-signals
>>>
>>> That's ABI break.
>>
>> There is no in kernel device tree users of "renesas,usb2-phy-r9a08g045"
>> compatible. It is introduced in patch 11/12 from this series. With this do
>> you still consider it ABI break?
> 
> Then this patch cannot be split from binding introducing the user. Don't
> add unused/undocumented compatibles.
> 
Or you meant DTS? I asked about ABI which is not about in-kernel users.
You can always change in-kernel users, so what would be any point of a
binding and its ABI?

Best regards,
Krzysztof