From 04f5c13b5543006fbeeeacc5d4f4e2ed3ef8e6bb Mon Sep 17 00:00:00 2001 From: Leo Chen Date: Fri, 17 Apr 2026 13:51:24 -0400 Subject: [PATCH] drm/amd/display: Disable hpo power gate [Why & How] Disable HPO power gate temporarily to work around some DP 2 LL compliance failures on DCN42. Reviewed-by: Roman Li Signed-off-by: Leo Chen Signed-off-by: Tom Chung Tested-by: Daniel Wheeler Signed-off-by: Alex Deucher --- drivers/gpu/drm/amd/display/dc/resource/dcn42/dcn42_resource.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/gpu/drm/amd/display/dc/resource/dcn42/dcn42_resource.c b/drivers/gpu/drm/amd/display/dc/resource/dcn42/dcn42_resource.c index acd76269abb42..ce26816b3e65c 100644 --- a/drivers/gpu/drm/amd/display/dc/resource/dcn42/dcn42_resource.c +++ b/drivers/gpu/drm/amd/display/dc/resource/dcn42/dcn42_resource.c @@ -700,6 +700,7 @@ static const struct dc_debug_options debug_defaults_drv = { .disable_optc_power_gate = false, .disable_dsc_power_gate = false, .disable_dio_power_gate = true, + .disable_hpo_power_gate = true, .pipe_split_policy = MPC_SPLIT_AVOID, .force_single_disp_pipe_split = false, .disable_dcc = DCC_ENABLE, -- 2.47.3