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linux/drivers/gpu/drm/amd/display/dc/optc
Ilya Bakoulin df60dcf5b5 drm/amd/display: Add 3DLUT FL HW bug workaround
[Why]
There is a known HW bug that causes the internal 3DLUT fetch signal to
be lost at VREADY, regardless of whether the OTG lock is being held or
not. A workaround is necessary to make sure that this internal signal
stays up after OTG unlock.

[How]
Set the 3DLUT_ENABLE bit immediately before and after the unlock. Also
use VUPDATE_KEEPOUT to prevent lock transition in the region between
VSTARTUP and VREADY, which could cause issues with this WA sequence.

Also including misc. 3DLUT DMA-related sequence fixes to address a few
regressions causing corruption.

Reviewed-by: Dillon Varone <dillon.varone@amd.com>
Signed-off-by: Ilya Bakoulin <Ilya.Bakoulin@amd.com>
Signed-off-by: Roman Li <roman.li@amd.com>
Tested-by: Daniel Wheeler <daniel.wheeler@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2024-10-15 11:23:12 -04:00
..
dcn10 drm/amd/display: Wait for all pending cleared before full update 2024-10-01 17:30:47 -04:00
dcn20 drm/amd/display: Wait for all pending cleared before full update 2024-10-01 17:30:47 -04:00
dcn30 drm/amd/display: Wait for all pending cleared before full update 2024-10-01 17:30:47 -04:00
dcn31 drm/amd/display: Wait for all pending cleared before full update 2024-10-01 17:30:47 -04:00
dcn32 drm/amd/display: Wait for all pending cleared before full update 2024-10-01 17:30:47 -04:00
dcn35 drm/amd/display: Wait for all pending cleared before full update 2024-10-01 17:30:47 -04:00
dcn201 drm/amd/display: use even ODM slice width for two pixels per container 2024-04-30 09:57:04 -04:00
dcn301 drm/amd/display: Wait for all pending cleared before full update 2024-10-01 17:30:47 -04:00
dcn314 drm/amd/display: Wait for all pending cleared before full update 2024-10-01 17:30:47 -04:00
dcn401 drm/amd/display: Add 3DLUT FL HW bug workaround 2024-10-15 11:23:12 -04:00
Makefile drm/amd/display: Add misc DC changes for DCN401 2024-04-26 17:23:34 -04:00