From a460beefe77d780ac48f19d39333852a7f93ffc1 Mon Sep 17 00:00:00 2001 From: Zhikai Zhai Date: Fri, 30 Jun 2023 11:35:14 +0800 Subject: [PATCH] drm/amd/display: Disable MPC split by default on special asic [WHY] All of pipes will be used when the MPC split enable on the dcn which just has 2 pipes. Then MPO enter will trigger the minimal transition which need programe dcn from 2 pipes MPC split to 2 pipes MPO. This action will cause lag if happen frequently. [HOW] Disable the MPC split for the platform which dcn resource is limited Cc: Mario Limonciello Cc: Alex Deucher Cc: stable@vger.kernel.org Reviewed-by: Alvin Lee Acked-by: Alan Liu Signed-off-by: Zhikai Zhai Tested-by: Daniel Wheeler Signed-off-by: Alex Deucher --- drivers/gpu/drm/amd/display/dc/dcn303/dcn303_resource.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/gpu/drm/amd/display/dc/dcn303/dcn303_resource.c b/drivers/gpu/drm/amd/display/dc/dcn303/dcn303_resource.c index 45956ef6f3f9..131b8b82afc0 100644 --- a/drivers/gpu/drm/amd/display/dc/dcn303/dcn303_resource.c +++ b/drivers/gpu/drm/amd/display/dc/dcn303/dcn303_resource.c @@ -65,7 +65,7 @@ static const struct dc_debug_options debug_defaults_drv = { .timing_trace = false, .clock_trace = true, .disable_pplib_clock_request = true, - .pipe_split_policy = MPC_SPLIT_DYNAMIC, + .pipe_split_policy = MPC_SPLIT_AVOID, .force_single_disp_pipe_split = false, .disable_dcc = DCC_ENABLE, .vsr_support = true,