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

[Marek Vasut]

On 1/16/26 4:26 AM, Rob Herring wrote:
> 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"?
It could, but then, if I am already patching that panel-simple driver, I 
can also simply include the timings in it, just like many other panels do.