linux/drivers/gpu/drm/amd/display/dc/clk_mgr/dcn316
Jing Zhou 9c2f4ae64b drm/amd/display: Guard against setting dispclk low for dcn31x
[WHY]
We should never apply a minimum dispclk value while in
prepare_bandwidth or while displays are active. This is
always an optimizaiton for when all displays are disabled.

[HOW]
Defer dispclk optimization until safe_to_lower = true
and display_count reaches 0.

Since 0 has a special value in this logic (ie. no dispclk
required) we also need adjust the logic that clamps it for
the actual request to PMFW.

Reviewed-by: Charlene Liu <charlene.liu@amd.com>
Reviewed-by: Chris Park <chris.park@amd.com>
Reviewed-by: Eric Yang <eric.yang@amd.com>
Signed-off-by: Jing Zhou <Jing.Zhou@amd.com>
Signed-off-by: Nicholas Kazlauskas <nicholas.kazlauskas@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>
2025-03-18 14:03:46 -04:00
..
dcn316_clk_mgr.c drm/amd/display: Guard against setting dispclk low for dcn31x 2025-03-18 14:03:46 -04:00
dcn316_clk_mgr.h
dcn316_smu.c drm/amd/display: Drop legacy code 2024-02-07 12:26:23 -05:00
dcn316_smu.h