Re: [PATCH 00/23] Nokia N950 display support

From: Emil Velikov
Date: Wed Mar 09 2016 - 11:58:42 EST

On 9 March 2016 at 16:24, Tomi Valkeinen <tomi.valkeinen@xxxxxx> wrote:
> On 09/03/16 18:19, Emil Velikov wrote:
>> Hi Sebastian,
>> On 8 March 2016 at 16:39, Sebastian Reichel <sre@xxxxxxxxxx> wrote:
>>> arch/arm/boot/dts/omap3-n950-n9.dtsi | 72 +++++++++
>>> arch/arm/boot/dts/omap3-n950.dts | 71 +++++++++
>> Just a friendly reminder that updating these and one will have to keep
>> the driver backwards compatible forever.
>> Tomi, has been in the process of removing all the unneeded cruft,
>> although omapdrm it is still using the custom panel, dsi and other
>> code as opposed to the ones provided by DRM. As he gets to reusing
>> those he might have some fun keeping things compatible.
>> It's up-to Tomi to decide, just thought I point it out.
> I haven't looked at this series yet, but all the omap display DT
> bindings have been designed to be correct, and while omapdrm will
> receive lots of changes, I don't see any need to touch anything in the
> DT side.
> Of course, if we will be using some existing common driver which
> implements bindings in some other way, it'll cause some complexities...
I'm leaning that you want to use the existing the DRM_PANEL driver
(gpu/drm/drm_panel.c). It has enough infrastructure to support 25+
'simple' panels (gpu/drm/panel/panel-simple.c) plus 5+ more complex
ones (gpu/drm/panel/).

>From a quick look the binding, they do differ although do take a look
for yourself: