Re: [PATCH] dt-bindings: firmware: document Qualcomm SM6375 SCM

Guru Das Srinagesh
2022-09-28T06:27:08Z

On Sep 27 2022 13:42, Krzysztof Kozlowski wrote:
> On 26/09/2022 18:59, Guru Das Srinagesh wrote:
> > On Sep 24 2022 10:17, Krzysztof Kozlowski wrote:
> >> On 24/09/2022 02:09, Guru Das Srinagesh wrote:
> >>> On Sep 21 2022 20:43, Konrad Dybcio wrote:
> >>>> Does it? I did not define this compatible in the driver, so it does
> >>>> not consume any clocks.
> >>>
> >>> The bindings should describe only those compatibles that the driver supports -
> >>> that is, both the driver and its bindings should be in sync.
> >>
> >> That's not entirely true. Bindings describe the hardware in the most
> >> complete way we can. Not the driver. Whether driver supports something
> >> or not, is not relevant here, except that we don't want to document
> >> non-existing things or stuff out of tree.
> >
> > Is this only applicable to compatibles or device tree properties in general?
>
> This applies to everything.
>
> >
> >>>
> >>> Could you please update the driver with this compatible as well? Let's not
> >>> merge this change without that first.
> >>
> >> This could be even merged without change in the driver. However it's not
> >> the case here as driver already supports it, so your request is fulfilled.
> >
> > My concern is that if somebody specifies a compatible/device tree property that
> > the driver doesn't support, their expectations from adding that change will not
> > be met. In addition to having the bindings describe HW in full, I think the
> > driver should also be in sync with it for this reason.
>
> As Rob answered, it might be difficult to keep all drivers in all
> operating systems, bootloaders and firmware components to be in sync. :)

Ack.