Re: [PATCH v5 10/10] drm/msm/dp: clear EDID on display unplug

[Konrad Dybcio]

On 3/14/26 2:09 AM, Dmitry Baryshkov wrote:
> Currently the driver only updates the EDID when it detects a connected
> monitor, which results in the connector still listing outdated modes
> even after the display is unplugged. Set connector's EDID to NULL on
> unplug to clear the list of modes.
> 
> Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@xxxxxxxxxxxxxxxx>
> ---
>  drivers/gpu/drm/msm/dp/dp_display.c | 4 ++++
>  drivers/gpu/drm/msm/dp/dp_panel.c   | 8 ++++++++
>  drivers/gpu/drm/msm/dp/dp_panel.h   | 2 ++
>  3 files changed, 14 insertions(+)
> 
> diff --git a/drivers/gpu/drm/msm/dp/dp_display.c b/drivers/gpu/drm/msm/dp/dp_display.c
> index 0a38957ea901..5c6a24ec140d 100644
> --- a/drivers/gpu/drm/msm/dp/dp_display.c
> +++ b/drivers/gpu/drm/msm/dp/dp_display.c
> @@ -447,6 +447,10 @@ static int msm_dp_hpd_unplug_handle(struct msm_dp_display_private *dp)
>  		return 0;
>  	}
>  
> +	/* Don't forget modes for eDP */
> +	if (!dp->msm_dp_display.is_edp)
> +		msm_dp_panel_unplugged(dp->panel, dp->msm_dp_display.connector);

Is there a change some ""funny"" panels decide to output a new EDID blob
after a "proper"/custom reset sequence (e.g. to remove limitations
presented to the DPTX at the UEFI display init stage?)

Konrad