[RFC PATCH v3 5/5] drm/panel: simple: add panel-dpi support

[Maxime Ripard]

On Sun, Feb 16, 2020 at 07:15:13PM +0100, Sam Ravnborg wrote:
> RFC only - not tested yet!
>
> The panel-dpi compatible is a fallback that
> allows the DT to specify the timing.
>
> When matching panel-dpi expect the device tree to include the
> timing information for the display-panel.
>
> Background for this change:
> There are a lot of panels and new models hits the market very often.
> It is a lost cause trying to chase them all and users of new panels
> will often find them in situations that the panel they ues are not
> supported by the kernel.
> On top of this a lot of panels are customized based on customer
> specifications.
>
> Including the panel timing in the device tree allows for a simple
> way to describe the actual HW and use this description in a generic
> way in the kernel.
> This allows uses of proprietary panels, or panels which are not
> included in the kernel, to specify the timing in the device tree
> together with all the other HW descriptions.
> And thus, using the device tree it is then easy to add support
> for an otherwise unknown panel.
>
> The current support expect panels that do not require any
> delays for prepare/enable/disable/unprepare.
>
> Signed-off-by: Sam Ravnborg <sam at ravnborg.org>
> Cc: Thierry Reding <thierry.reding at gmail.com>
> Cc: Laurent Pinchart <laurent.pinchart at ideasonboard.com>
> Cc: Maxime Ripard <mripard at kernel.org>
> Cc: Oleksandr Suvorov <oleksandr.suvorov at toradex.com>

I submitted a similar patch a year ago:
https://lists.freedesktop.org/archives/dri-devel/2019-March/209682.html

So I'm all for it :)

Regardless of the outcome of this discussion, for all the patches:
Acked-by: Maxime Ripard <mripard at kernel.org>

Maxime