Re: [PATCH 1/2] spi: dt-binding: add Microchip CoreQSPI compatible

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On 03/08/2022 08:59, naga sureshkumar wrote:
> Hi Krzysztof,
> 
> On Wed, Aug 3, 2022 at 11:42 AM Krzysztof Kozlowski
> <krzysztof.kozlowski@xxxxxxxxxx> wrote:
>>
>> On 02/08/2022 15:13, Mark Brown wrote:
>>> On Tue, Aug 02, 2022 at 10:52:25AM +0200, Krzysztof Kozlowski wrote:
>>>> On 01/08/2022 11:42, Naga Sureshkumar Relli wrote:
>>>
>>>>> -    enum:
>>>>> -      - microchip,mpfs-spi
>>>>> -      - microchip,mpfs-qspi
>>>>> +    oneOf:
>>>>> +      - description: Microchip's Polarfire SoC SPI controller.
>>>>> +        const: microchip,mpfs-spi
>>>>> +      - description: Microchip's Polarfire SoC QSPI controller.
>>>
>>>> Useless descriptions - they repeat compatible. Just keep it as enum and
>>>> skip descriptions. What value do they bring?
>>>
>>> Someone not familiar with the full Microchip product line might not be
>>> aware of the expansion of mpfs, it's not blindingly obvious.
>>
>> Then it should be explained in title/description of the binding, not in
>> compatible. This is the usual way of providing some text description,
>> not for each compatible by repeating the compatible text.
> Ok. In the next version I will update the bindings like below
> 
> -title: Microchip MPFS {Q,}SPI Controller Device Tree Bindings
> +title: Microchip FPGA {Q,}SPI Controllers
> +
> +description:
> +  SPI and QSPI controllers on the Microchip PolarFire SoC and they are based
> + on the "soft"  fabric IP cores.
>  oneOf:
>        - items:
> +          - const: microchip,mpfs-qspi
> +          - const: microchip,coreqspi-rtl-v2

This piece should have its own explanation and preferably in its own
commit. As I mentioned before, you change existing compatible so it
should be explained.

Best regards,
Krzysztof



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