Re: [PATCH v2 1/2] dt-bindings: cdns,usb3: Add clock and reset

From: Krzysztof Kozlowski
Date: Thu May 11 2023 - 10:50:34 EST


On 11/05/2023 14:16, Roger Quadros wrote:
>
>
> On 11/05/2023 12:26, Krzysztof Kozlowski wrote:
>> On 10/05/2023 15:28, Minda Chen wrote:
>>> To support generic clock and reset init in Cadence USBSS
>>> controller, add clock and reset dts configuration.
>>>
>>> Signed-off-by: Minda Chen <minda.chen@xxxxxxxxxxxxxxxx>
>>> ---
>>> .../devicetree/bindings/usb/cdns,usb3.yaml | 14 ++++++++++++++
>>> 1 file changed, 14 insertions(+)
>>>
>>> diff --git a/Documentation/devicetree/bindings/usb/cdns,usb3.yaml b/Documentation/devicetree/bindings/usb/cdns,usb3.yaml
>>> index cae46c4982ad..623c6b34dee3 100644
>>> --- a/Documentation/devicetree/bindings/usb/cdns,usb3.yaml
>>> +++ b/Documentation/devicetree/bindings/usb/cdns,usb3.yaml
>>> @@ -42,6 +42,18 @@ properties:
>>> - const: otg
>>> - const: wakeup
>>>
>>> + clocks:
>>> + minItems: 1
>>> + maxItems: 8
>>> + description:
>>> + USB controller clocks.
>>
>> You need to list the items. And why is it variable? Your clock choice in
>> the example is poor, I doubt it is real.
>>
>>> +
>>> + resets:
>>> + minItems: 1
>>> + maxItems: 8
>>> + description:
>>> + USB controller generic resets.
>>
>> Here as well.
>>
>> You had one clock last time, thus the review was - drop the names. Now
>> you changed it to 8 clocks... I don't understand.
>>
>
> Different platforms may have different number of clocks/resets or none.
> So I don't think minItems/maxItems should be specified.

Yeah, but we want the clocks to be specific per platform. Not anything
anywhere.

Best regards,
Krzysztof