[PATCHv2 02/56] ARM: dts: omap4-droid4: add panel compatible

[Sebastian Reichel]

Hi Laurent,

On Tue, Feb 25, 2020 at 01:37:08AM +0200, Laurent Pinchart wrote:
> Hi Sebastian,
> 
> Thank you for the patch.

Thanks for the review.

> On Tue, Feb 25, 2020 at 12:20:32AM +0100, Sebastian Reichel wrote:
> > Add Droid 4 specific compatible value in addition to the
> > generic one, so that we have the ability to add panel
> > specific quirks in the future.
> 
> We need to document this compatible string in DT bindings, I don't think
> this is included in this series.

Correct, right now none of the extra compatible strings are
documented in the binding file. E.g. "tpo,taal" is used by
omap4-sdp and in the example section of the DT bindings.

> Furthermore, could we use a compatible string that actually
> matches the panel vendor and model, instead of the device name ?

We don't know the Droid 4 panel vendor and/or model. For
N950 "nokia,himalaya" is used, which is obviously also
not the real vendor. But for N950 there is a good reason
to use a N950 specific compatible anyways, since some
pixels are covered by plastic.

Maybe this can just be handled when the bindings file is
converted to YAML?

-- Sebastian

> 
> > Signed-off-by: Sebastian Reichel <sebastian.reichel at collabora.com>
> > ---
> >  arch/arm/boot/dts/motorola-mapphone-common.dtsi | 2 +-
> >  1 file changed, 1 insertion(+), 1 deletion(-)
> > 
> > diff --git a/arch/arm/boot/dts/motorola-mapphone-common.dtsi b/arch/arm/boot/dts/motorola-mapphone-common.dtsi
> > index a5e4ba7c8dab..622383ec6a75 100644
> > --- a/arch/arm/boot/dts/motorola-mapphone-common.dtsi
> > +++ b/arch/arm/boot/dts/motorola-mapphone-common.dtsi
> > @@ -200,7 +200,7 @@ dsi1_out_ep: endpoint {
> >  	};
> >  
> >  	lcd0: panel at 0 {
> > -		compatible = "panel-dsi-cm";
> > +		compatible = "motorola,droid4-panel", "panel-dsi-cm";
> >  		reg = <0>;
> >  		label = "lcd0";
> >  		vddi-supply = <&lcd_regulator>;
> 
> -- 
> Regards,
> 
> Laurent Pinchart
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