]> git.ipfire.org Git - thirdparty/kernel/linux.git/commit
drm/amd/display: Skip PHY SSC reduction on some 8K panels
authorRoman Li <Roman.Li@amd.com>
Wed, 20 May 2026 20:50:34 +0000 (16:50 -0400)
committerAlex Deucher <alexander.deucher@amd.com>
Wed, 17 Jun 2026 22:09:23 +0000 (18:09 -0400)
commitfe7945d092a1d3c340febc2ab176cee50d0f6c80
treecfd9621475019fe80a1bec0e7e750fc9c08a54e0
parentb29aaf0a72222bfafe4d73899dadb0486b5bcb09
drm/amd/display: Skip PHY SSC reduction on some 8K panels

[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: 5fa62c87cffd ("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 144169e7be0831e09958a906d08d1856751aa6c6)
drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_helpers.c