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

[Dmitry Baryshkov]

On Tue, Sep 24, 2024 at 11:51:47AM GMT, Pin-yen Lin 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 at chromium.org>
> 
> ---
> 
>  drivers/gpu/drm/bridge/ite-it6505.c | 2 ++
>  1 file changed, 2 insertions(+)
> 

Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov at linaro.org>

-- 
With best wishes
Dmitry