drm/amd/display: Set exit_optimized_pwr_state for DCN31
authorNicholas Kazlauskas <nicholas.kazlauskas@amd.com>
Fri, 10 Dec 2021 23:03:59 +0000 (15:03 -0800)
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Wed, 22 Dec 2021 08:32:43 +0000 (09:32 +0100)
commitcc98ef784152d078b4610f2ea2eb83134108252c
tree929e9329fe55898fc3ad1987044650ef3ba0c28c
parenta0dacf4bc3c58a441b2759e6b949173b7a042c09
drm/amd/display: Set exit_optimized_pwr_state for DCN31

[ Upstream commit 7e4d2f30df3fb48f75ce9e96867d42bdddab83ac ]

[Why]
SMU now respects the PHY refclk disable request from driver.

This causes a hang during hotplug when PHY refclk was disabled
because it's not being re-enabled and the transmitter control
starts on dc_link_detect.

[How]
We normally would re-enable the clk with exit_optimized_pwr_state
but this is only set on DCN21 and DCN301. Set it for dcn31 as well.

This fixes DMCUB timeouts in the PHY.

Fixes: 64b1d0e8d500 ("drm/amd/display: Add DCN3.1 HWSEQ")
Reviewed-by: Eric Yang <Eric.Yang2@amd.com>
Acked-by: Pavle Kotarac <Pavle.Kotarac@amd.com>
Tested-by: Daniel Wheeler <daniel.wheeler@amd.com>
Signed-off-by: Nicholas Kazlauskas <nicholas.kazlauskas@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
drivers/gpu/drm/amd/display/dc/dcn31/dcn31_init.c