Re: [PATCH v9 04/15] dt-bindings: spi: dw: Add AMD Pensando Elba SoC SPI Controller bindings

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On 24/01/2023 02:57, Brad Larson wrote:
> On 19/01/2023 7:55 UTC, Krzysztof Kozlowski wrote:
>> On 19/01/2023 04:51, Brad Larson wrote:
>>> The AMD Pensando Elba SoC has integrated the DW APB SPI Controller
>>>
> ...
>>>  .../devicetree/bindings/spi/snps,dw-apb-ssi.yaml   | 14 ++++++++++++++
>>>  1 file changed, 14 insertions(+)
>>>
>>> diff --git a/Documentation/devicetree/bindings/spi/snps,dw-apb-ssi.yaml b/Documentation/devicetree/bindings/spi/snps,dw-apb-ssi.yaml
>>> index d33b72fabc5d..96b072835de0 100644
>>> --- a/Documentation/devicetree/bindings/spi/snps,dw-apb-ssi.yaml
>>> +++ b/Documentation/devicetree/bindings/spi/snps,dw-apb-ssi.yaml
>>> @@ -37,6 +37,18 @@ allOf:
>>>      else:
>>>        required:
>>>          - interrupts
>>> +  - if:
>>> +      properties:
>>> +        compatible:
>>> +          contains:
>>> +            const: amd,pensando-elba-spi
>>> +    then:
>>> +      properties:
>>> +        amd,pensando-elba-syscon:
>>> +          $ref: /schemas/types.yaml#/definitions/phandle-array
>>> +          description: AMD Pensando Elba SoC system controller
>>
>> And nothing here - neither in commit msg nor here - explains why do you
>> need it and what is it for.
> 
> Adding property amd,pensando-elba-syscon was a result of this thread:
> https://lore.kernel.org/lkml/20220621101159.stvan53rvr6qugna@mobilestation/
> 

But it is not in the code. The code should tell what the property does,
what is its purpose, how it is used etc. Your property description
basically copies the name without giving any new information.

Best regards,
Krzysztof




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