Re: [PATCH] media: dt-bindings: Merge OV5695 into OV5693 binding

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On Mon, Jul 31, 2023 at 5:21 AM Sakari Ailus <sakari.ailus@xxxxxx> wrote:
>
> Hi Rob,
>
> On Fri, Jul 07, 2023 at 03:06:04PM -0600, Rob Herring wrote:
> > The OV5695 binding is almost the same as the OV5693 binding. The only
> > difference is 'clock-names' is defined for OV5695. However, the lack of
> > clock-names is an omission as the Linux OV5693 driver expects the same
> > 'xvclk' clock name.
> >
> > 'link-frequencies' is required by OV5693, but not OV5695. Just drop it
> > from being required. Expressing it conditionally would be ugly. It
> > shouldn't really be required either as the driver only supports 1
> > frequency anyways.
>
> The correct way to address this would appear to be to add link-frequencies
> for both of these devices. I think I've seen one or two sensors of this
> class (raw, CSI-2/parallel, external clock etc.) with link frequencies
> documented as "fixed" --- which is probably a documentation issue more than
> anything else.

link-frequencies is already supported. It's just a question of being
required or not. Adding a property as required is an ABI break (if the
OS starts requiring the property).

Rob




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