Re: [RFC] drm/panel/simple-edp: Add Samsung ATNA45DC02

[Dmitry Baryshkov]

On Wed, Jul 17, 2024 at 06:09:29PM GMT, Rob Clark wrote:
> On Wed, Jul 17, 2024 at 5:19 PM Doug Anderson <dianders@xxxxxxxxxxxx> wrote:
> >
> > Hi,
> >
> > On Wed, Jul 17, 2024 at 2:58 PM Rob Clark <robdclark@xxxxxxxxx> wrote:
> > >
> > > From: Rob Clark <robdclark@xxxxxxxxxxxx>
> > >
> > > Just a guess on the panel timings, but they appear to work.
> > >
> > > Signed-off-by: Rob Clark <robdclark@xxxxxxxxxxxx>
> > > ---
> > > This adds the panel I have on my lenovo yoga slim 7x laptop.  I couldn't
> > > find any datasheet so timings is just a guess.  But AFAICT everything
> > > works fine.
> > >
> > >  drivers/gpu/drm/panel/panel-edp.c | 2 ++
> > >  1 file changed, 2 insertions(+)
> >
> > Given that this is a Samsung ATNA<mumble>, is there any chance it's an
> > OLED panel? Should it be supported with the Samsung OLED panel driver
> > like this:
> >
> > https://lore.kernel.org/r/20240715-x1e80100-crd-backlight-v2-0-31b7f2f658a3@xxxxxxxxxx
> 
> it is an OLED panel, and I did see that patchset and thought that
> samsung panel driver would work.  But changing the compat string on
> the yoga dts only gave me a black screen (and I didn't see any of the
> other mentioned problems with bl control or dpms with panel-edp).  So
> :shrug:?  It could be I overlooked something else, but it _seems_ like
> panel-edp is fine for this panel. Plus, it would avoid awkwardness if
> it turned out there were other non-samsung 2nd sources, but so far
> with a sample size of two 100% of these laptops have the same panel
> ;-)
> 
> But that was the reason for posting this as an RFC.  I was hoping
> someone had some hint about where to find datasheets (my google'ing
> was not successful), etc.

Panelook has a datasheet for ATNA45DC01. It's behind a 'register new
business email' paywall.

> 
> BR,
> -R

-- 
With best wishes
Dmitry