drm/amd/display: Skip PHY SSC reduction on some 8K panels

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[Why]
Some 8K displays cannot tolerate the reduced phy ssc value
at high link utilization and show corruption or black screen.

[How]
Add an EDID panel-id quirk to utilize existing skip_phy_ssc_reduction flag.

To pass the link into the quirk handler, change the signature of
apply_edid_quirks() to take link as an argument. The dev local in
dm_helpers_parse_edid_caps() becomes unused and is removed.

Fixes: 5fa62c87cf ("drm/amd/display: Add option to disable PHY SSC reduction on transmitter enable")
Reviewed-by: Alex Hung <alex.hung@amd.com>
Signed-off-by: Roman Li <Roman.Li@amd.com>
Signed-off-by: Aurabindo Pillai <aurabindo.pillai@amd.com>
Tested-by: Dan Wheeler <daniel.wheeler@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
(cherry picked from commit 144169e7be)

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This commit is contained in:

Roman Li 2026-05-20 16:50:34 -04:00 • committed by Alex Deucher

parent b29aaf0a72

commit fe7945d092

1 changed files with 10 additions and 3 deletions

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drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_helpers.c

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