Re: [PATCH 13/25] ASoC: dt-bindings: meson: axg-pdm: document 'sysrate' property

[Jerome Brunet <jbrunet@xxxxxxxxxxxx>]

On Fri 15 Mar 2024 at 11:00, Krzysztof Kozlowski <krzysztof.kozlowski@xxxxxxxxxx> wrote:

> On 15/03/2024 00:21, Jan Dakinevich wrote:
>> This option allow to redefine the rate of DSP system clock.
>
> And why is it suitable for bindings? Describe the hardware, not what you
> want to do in the driver.
>
>> 
>> Signed-off-by: Jan Dakinevich <jan.dakinevich@xxxxxxxxxxxxxxxxx>
>> ---
>>  Documentation/devicetree/bindings/sound/amlogic,axg-pdm.yaml | 4 ++++
>>  1 file changed, 4 insertions(+)
>> 
>> diff --git a/Documentation/devicetree/bindings/sound/amlogic,axg-pdm.yaml b/Documentation/devicetree/bindings/sound/amlogic,axg-pdm.yaml
>> index df21dd72fc65..d2f23a59a6b6 100644
>> --- a/Documentation/devicetree/bindings/sound/amlogic,axg-pdm.yaml
>> +++ b/Documentation/devicetree/bindings/sound/amlogic,axg-pdm.yaml
>> @@ -40,6 +40,10 @@ properties:
>>    resets:
>>      maxItems: 1
>>  
>> +  sysrate:
>> +    $ref: /schemas/types.yaml#/definitions/uint32
>> +    description: redefine rate of DSP system clock
>
> No vendor prefix, so is it a generic property? Also, missing unit
> suffix, but more importantly I don't understand why this is a property
> of hardware.

+1.

The appropriate way to set rate of the clock before the driver take over
is 'assigned-rate', if you need to customize this for different
platform.

Then you don't have to deal with it in the device driver.

>
> Best regards,
> Krzysztof


-- 
Jerome