Re: [PATCH v2 2/2] drm/bridge: it6505: Drop EDID cache on bridge power off

[Doug Anderson]

Hi,

On Thu, Sep 26, 2024 at 2:29 AM Pin-yen Lin <treapking@xxxxxxxxxxxx> wrote:
>
> The bridge might miss the display change events when it's powered off.
> This happens when a user changes the external monitor when the system
> is suspended and the embedded controller doesn't not wake AP up.
>
> It's also observed that one DP-to-HDMI bridge doesn't work correctly
> when there is no EDID read after it is powered on.
>
> Drop the cache to force an EDID read after system resume to fix this.
>
> Fixes: 11feaef69d0c ("drm/bridge: it6505: Add caching for EDID")
> Signed-off-by: Pin-yen Lin <treapking@xxxxxxxxxxxx>
> Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@xxxxxxxxxx>
> Reviewed-by: Douglas Anderson <dianders@xxxxxxxxxxxx>
>
> ---
>
> Changes in v2:
> - Collect review tags
>
>  drivers/gpu/drm/bridge/ite-it6505.c | 2 ++
>  1 file changed, 2 insertions(+)

Like with patch #1, meant to push to drm-misc-fixes but ended up on
drm-misc-next. Yell if this is a problem, but I think it should be OK.

[2/2] drm/bridge: it6505: Drop EDID cache on bridge power off
      commit: 574c558ddb68591c9a4b7a95e45e935ab22c0fc6

-Doug