Re: [PATCH v4 2/3] dt-bindings: usb: snps,dwc3: Add runtime-suspend-on-usb-suspend property

From: Krzysztof Kozlowski
Date: Sat Aug 26 2023 - 04:41:02 EST


On 26/08/2023 03:53, Thinh Nguyen wrote:
>>>> For example on Qualcomm platforms there is a phy sideband signalling
>>>> which detects the wakeup signal when resume is initiated by the host.
>>>
>>> So compatible-specific.
>>>
>>>> Thus qcom platforms can benefit from this feature by defining this dt
>>>> property. (in a parallel discussion with Thinh N to come up with a
>>>> better name for this dt entry).
>>>
>>> Thanks, with quite a long message you at the end admitted this is
>>> compatible-specific. Exactly what I wrote it one sentence previously.
>>>
>
> Various dwc3 platforms often share a common capability that can be
> shared with a common dt property. If we dedicate a property such as in
> this case, it helps designers enable a certain feature without updating
> the driver every time a new platform is introduced. It also helps keep
> the driver a bit simpler on the compatible checks.

That's not the purpose of bindings. Sorry.

>
> Regardless, what Krzysztof said is valid. Perhaps we can look into
> enhancing dwc3 to maintain shared behavior based on compatible instead?


Best regards,
Krzysztof