[PATCH 1/2] dt-bindings: display: panel: Fork Waveshare panels into separate document

[Rob Herring]

On Thu, Jan 15, 2026 at 1:20 PM Marek Vasut <marek.vasut at mailbox.org> wrote:
>
> On 1/15/26 6:40 PM, Rob Herring wrote:
> > On Tue, Jan 13, 2026 at 01:05:30AM +0100, Marek Vasut wrote:
> >> Move the Waveshare panels description into separate document, so they
> >> can be properly described with compatible = "waveshare,...", "panel-dpi"
> >> and attached to "waveshare,dsi2dpi" bridge.
> >
> > But why do we need "panel-dpi"? Adding that requires changing a DT.
> > Can't you make the kernel handle these compatible strings as a
> > "panel-dpi" without the compatible?
> I can, but wouldn't we then miss the more specific compatible strings in
> the DT ?
>
> compatible = "waveshare,13.3inch-panel", "panel-dpi";
>               ^^^^^^^^^^^^^^^^^^^^^^^^^^
>               this ... would be removed. Do we want that ?

No, drop "panel-dpi". Or really, don't add it.

>
> The other option would be to add the timings into panel-simple driver,
> then we wouldn't have to change the bindings at all. Maybe that would be
> preferable ?

Why can't the "panel-dpi" driver match to"waveshare,13.3inch-panel"?

Rob