[Intel-gfx] [PATCH] drm/i915/dp: Read link status more times when EQ not done

2017-03-02 Thread Lee, Shawn C
From: "Lee, Shawn C" Display driver read DPCD register 0x202, 0x203 and 0x204 to identify eDP sink status.If PSR exit is ongoing at eDP sink, and eDP source read these registers at the same time. Panel will report EQ & symbol lock not done. It will cause panel display flicking. Try to read link

Re: [Intel-gfx] [PATCH] drm/i915/dp: Read link status more times when EQ not done

2017-02-02 Thread Jani Nikula
On Thu, 02 Feb 2017, "Lee, Shawn C" wrote: > From: "Lee, Shawn C" > > When user space link status, display driver read DPCD register > 0x202, 0x203 and 0x204 to identify sink status. When PSR exit > is ongoing before EQ done. Panel will report EQ & symbol lock > not done. Both of them are under p

[Intel-gfx] [PATCH] drm/i915/dp: Read link status more times when EQ not done

2017-02-02 Thread Lee, Shawn C
From: "Lee, Shawn C" When user space link status, display driver read DPCD register 0x202, 0x203 and 0x204 to identify sink status. When PSR exit is ongoing before EQ done. Panel will report EQ & symbol lock not done. Both of them are under progressing at the same time to cause this issue. This