Hi,
I've been investigating several eDP issues on a Rockchip RK3399 system and have two proposed bugfixes. RK3399 has two CRTCs, either of which can be used for eDP output. For both fixes, we have bugs due to the relationship between the generalized "self refresh helpers" and the analogix-dp bridge driver which controls much of the PSR mechanics. These bugs are most visible when switching between CRTCs.
I'm not a DRM expert, but I've been poking at a lot of Rockchip display drivers recently. I'd love some skeptical eyes, so feel free to ask questions if I haven't explained issues well, or the proposals look fishy.
Regards, Brian
Brian Norris (2): drm/bridge: analogix_dp: Support PSR-exit to disable transition drm/atomic: Force bridge self-refresh-exit on CRTC switch
.../drm/bridge/analogix/analogix_dp_core.c | 42 +++++++++++++++++-- drivers/gpu/drm/drm_atomic_helper.c | 16 +++++-- 2 files changed, 51 insertions(+), 7 deletions(-)