Re: [PATCH v2 3/4] media: dt-bindings: add bindings for Toshiba TC358746

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On 22-09-21, Krzysztof Kozlowski wrote:
> On 20/09/2022 19:32, Laurent Pinchart wrote:
> >>>
> >>> Explicit bus types in DT indeed makes it easier for drivers, so if a
> >>> device can support multiple bus types (even if not implemented yet in
> >>> the corresponding drivers), the property should be there.
> >>
> >> Okay, I will make it required.
> >>
> >>>> Why do you have hsync-active and vsync-active if both are always zero? Can
> >>>> the hardware not support other configuration?
> >>
> >> Sure the device supports toggling the logic but it is not implemented.
> >> So the bindings needs to enforce it to 0 right now. As soon as it is
> >> implemented & tested, we can say that both is supported :)
> > 
> > Bindings are not supposed to be limited by the existing driver
> > implementation, so you can already allow both polarities, and just
> > reject the unsupported options in the driver at probe time. Future
> > updates to the driver won't require a binding change.
> > 
> 
> +1

I don't wanna do that because this let the binding user assume that
this mode is already supported. Adapting a binding is just 1 commit and
since the property is already existing, there is no breaking change.

Regards,
  Marco



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