drm/amd/display: Force min DCFCLK on AC for DCN42B

Browse source

[Why]
This is a temporary workaround to address underflows at 4k144 with
DCFCLK set to 200MHz.

[How]
Set the DCFCLK minimum frequency to 300MHz when in AC mode.

Signed-off-by: Gabe Teeger <gabe.teeger@amd.com>
Signed-off-by: Matthew Stewart <Matthew.Stewart2@amd.com>
Reviewed-by: Harry Wentland <harry.wentland@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

...

This commit is contained in:

Gabe Teeger 2026-09-01 13:41:44 -04:00 • committed by Alex Deucher

parent 43b9f0f186

commit 281eacf0c1

1 changed files with 15 additions and 5 deletions

Show all changes Ignore whitespace when comparing lines Ignore changes in amount of whitespace Ignore changes in whitespace at EOL

Download patch file Download diff file Expand all files Collapse all files

20

drivers/gpu/drm/amd/display/dc/clk_mgr/dcn42b/dcn42b_clk_mgr.c

View file