Re: [PATCH 09/12] dt-bindings: panel: Add Bananapi S070WV20-CT16 MIPI-DSI panel bindings

[Chen-Yu Tsai]

Hi Rob,

On Mon, Oct 15, 2018 at 7:24 PM Rob Herring <robh@xxxxxxxxxx> wrote:
>
> On Thu, 27 Sep 2018 17:18:47 +0530, Jagan Teki wrote:
> > Bananapi S070WV20-CT16 is 800x480, 4-lane MIPI-DSI panel, the
> > same panel PCB comes with parallel RBG which is supported via
> > panel-simple with "bananapi,s070wv20-ct16" compatible.
> >
> > Signed-off-by: Jagan Teki <jagan@xxxxxxxxxxxxxxxxxxxx>
> > ---
> >  .../panel/bananapi,s070wv20-ct16-dsi.txt      | 21 +++++++++++++++++++
> >  1 file changed, 21 insertions(+)
> >  create mode 100644 Documentation/devicetree/bindings/display/panel/bananapi,s070wv20-ct16-dsi.txt
> >
>
> Reviewed-by: Rob Herring <robh@xxxxxxxxxx>

This "panel" is actually an RGB panel with a MIPI-DSI-to-RGB bridge
tacked on. On one particular revision of this module, one can also
directly use the RGB interface.

Would it be better to model this as bridge+panel? We already have
a binding for the RGB version [1]. This would make it harder to
make a driver though, as there is no publicly available datasheet
for the bridge chip, so it's likely that part of the init sequence
would have to be hard-coded.

Thanks
ChenYu

[1] Documentation/devicetree/bindings/display/panel/bananapi,s070wv20-ct16.txt