RE: [PATCH] drm/amd/display: Keep eDP Vdd on when eDP stream is already

2022-01-27 Thread Liu, Zhan
To: amd-gfx@lists.freedesktop.org; Liu, Charlene > Cc: Pierre-Loup Griffais ; Cornij, Nikola > ; Kotarac, Pavle ; Gutierrez, > Agustin > Subject: [PATCH] drm/amd/display: Keep eDP Vdd on when eDP stream is already > > [Why] > Even if can_apply_edp_fast_boot is set to 1 at boot, this fla

[PATCH] drm/amd/display: Keep eDP Vdd on when eDP stream is already

2022-01-27 Thread Liu, Zhan
[Public] [Why] Even if can_apply_edp_fast_boot is set to 1 at boot, this flag will be cleared to 0 at S3 resume. However, we still need to keep Vdd on at S3 resume. Turning eDP Vdd off at resume will result in black screen at S3 resume. [How] Don't turn eDP Vdd off when there is an existing eDP