[PATCH 1/5] dt-bindings: display: panel-dpi: Add bits-per-color property

[Rob Herring]

On Tue, Jul 21, 2020 at 3:23 AM Maxime Ripard <maxime at cerno.tech> wrote:
>
> On Mon, Jul 20, 2020 at 08:10:26PM -0600, Rob Herring wrote:
> > On Tue, Jul 14, 2020 at 03:13:01PM +0800, Chen-Yu Tsai wrote:
> > > From: Chen-Yu Tsai <wens at csie.org>
> > >
> > > Some LCD panels do not support 24-bit true color, or 8bits per channel
> > > RGB. Many low end ones only support up to 6 bits per channel natively.
> >
> > This should be implied by the panel's compatible property.
>
> I'm not sure it should, or at least it's not sufficient. Some panels
> while 24 bits capable might only have the higher bits connected to save
> off a couple of pins per color, in which case we should probably
> describe that somehow.

That's the bus/interface format which the 2nd paragraph said this was
not for. If it was, then just bits per component is not enough.

Rob