Quoting Rob Clark (2020-08-18 09:31:19)
From: Rob Clark robdclark@chromium.org
This has roughly the same effect as drm_atomic_helper_wait_for_vblanks(), basically just ensuring that vblank accounting is enabled so that we get valid timestamp/seqn on pageflip events.
Signed-off-by: Rob Clark robdclark@chromium.org
Tested-by: Stephen Boyd swboyd@chromium.org