https://bugzilla.kernel.org/show_bug.cgi?id=215511
--- Comment #4 from Jose Mestre (pmestre@gmail.com) --- 0f591d17e36e08313b0c440b99b0e57b47e01a9a is the first bad commit commit 0f591d17e36e08313b0c440b99b0e57b47e01a9a Author: Angus Wang angus.wang@amd.com Date: Thu Dec 9 17:27:01 2021 -0500
drm/amd/display: Changed pipe split policy to allow for multi-display pipe split
commit ee2698cf79cc759a397c61086c758d4cc85938bf upstream.
[WHY] Current implementation of pipe split policy prevents pipe split with multiple displays connected, which caused the MCLK speed to be stuck at max
[HOW] Changed the pipe split policies so that pipe split is allowed for multi-display configurations
Bug: https://gitlab.freedesktop.org/drm/amd/-/issues/1522 Bug: https://gitlab.freedesktop.org/drm/amd/-/issues/1709 Bug: https://gitlab.freedesktop.org/drm/amd/-/issues/1655 Bug: https://gitlab.freedesktop.org/drm/amd/-/issues/1403
Note this is a backport of this commit from amdgpu drm-next for 5.16.
Tested-by: Daniel Wheeler daniel.wheeler@amd.com Reviewed-by: Aric Cyr Aric.Cyr@amd.com Acked-by: Rodrigo Siqueira Rodrigo.Siqueira@amd.com Signed-off-by: Angus Wang angus.wang@amd.com Signed-off-by: Alex Deucher alexander.deucher@amd.com Cc: stable@vger.kernel.org Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org
drivers/gpu/drm/amd/display/dc/dcn20/dcn20_resource.c | 2 +- drivers/gpu/drm/amd/display/dc/dcn21/dcn21_resource.c | 2 +- drivers/gpu/drm/amd/display/dc/dcn30/dcn30_resource.c | 2 +- drivers/gpu/drm/amd/display/dc/dcn301/dcn301_resource.c | 2 +- drivers/gpu/drm/amd/display/dc/dcn302/dcn302_resource.c | 2 +- drivers/gpu/drm/amd/display/dc/dcn303/dcn303_resource.c | 2 +- drivers/gpu/drm/amd/display/dc/dcn31/dcn31_resource.c | 2 +- 7 files changed, 7 insertions(+), 7 deletions(-)