drm/amd/display: Add option to disable PHY SSC reduction on transmitter enable

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[WHY]
On some 8k display models flickering or black screens may occur at reduced
PHY SSC.

[HOW]
Add an option to set a workaround bit for these displays to keep the old
SSC value.

Reviewed-by: Nicholas Kazlauskas <nicholas.kazlauskas@amd.com>
Signed-off-by: Muhammad Ahmed <Muhammad.Ahmed@amd.com>
Signed-off-by: Alex Hung <alex.hung@amd.com>
Tested-by: Daniel Wheeler <daniel.wheeler@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

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This commit is contained in:

Muhammad Ahmed 2025-05-27 12:01:41 -04:00 • committed by Alex Deucher

parent 90bc60cef2

commit 5fa62c87cf

3 changed files with 4 additions and 1 deletions

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1

drivers/gpu/drm/amd/display/dc/bios/command_table2.c

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1

drivers/gpu/drm/amd/display/dc/dc.h

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3

drivers/gpu/drm/amd/display/dmub/inc/dmub_cmd.h

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