Re: [PATCH v2 4/4] drm/panel-edp: Choose correct preferred mode

[Hsin-Yi Wang]

On Fri, Nov 3, 2023 at 9:03 AM Doug Anderson <dianders@xxxxxxxxxxxx> wrote:
>
> Hi,
>
> On Thu, Nov 2, 2023 at 3:13 PM Hsin-Yi Wang <hsinyi@xxxxxxxxxxxx> wrote:
> >
> > If a non generic edp-panel is under aux-bus, the mode read from edid would
> > still be selected as preferred and results in multiple preferred modes,
> > which is ambiguous.
> >
> > If a hard-coded mode is present, unset the preferred bit of the modes read
> > from edid.
> >
> > Signed-off-by: Hsin-Yi Wang <hsinyi@xxxxxxxxxxxx>
> > ---
> > v1->v2: split patches from drm_modes.
> > ---
> >  drivers/gpu/drm/panel/panel-edp.c | 7 +++++--
> >  1 file changed, 5 insertions(+), 2 deletions(-)
>
> Reviewed-by: Douglas Anderson <dianders@xxxxxxxxxxxx>
>
> Do you think this should have a "Fixes?" As per discussion on V1 [1],
> this has probably been a bit broken from the beginning, though I guess
> it only became a big deal after the AUX bus made it so that the panel
> driver commonly had the EDID...
>
If this patch needs to apply Fixes, then the previous patch might also have to?

Fixes: 280921de7241 ("drm/panel: Add simple panel support")


> [1] https://lore.kernel.org/r/CAD=FV=WHzCdiYumsxUm_am+ALqq9SOOrjf=JYHqJuiKFB+Dnsw@xxxxxxxxxxxxxx