From 6e3eb2766731c6bd2bfae5a0fbb538ec85e7e822 Mon Sep 17 00:00:00 2001 From: Nicholas Susanto Date: Fri, 7 Jun 2024 14:39:01 -0400 Subject: [PATCH] drm/amd/display: Temporarily disable HPO PG on DCN35 [WHY] On hotpluggin a 4k144 HDMI FRL setup, display fails FRL link training and falls back to TMDS which is caused by driver not ungating HPO before doing FRL link training. [HOW] Enable debug flag to disable HPO power gate in DCN35 Reviewed-by: Nicholas Kazlauskas Reviewed-by: Charlene Liu Signed-off-by: Alex Hung Signed-off-by: Nicholas Susanto Tested-by: Daniel Wheeler Signed-off-by: Alex Deucher --- drivers/gpu/drm/amd/display/dc/resource/dcn35/dcn35_resource.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/gpu/drm/amd/display/dc/resource/dcn35/dcn35_resource.c b/drivers/gpu/drm/amd/display/dc/resource/dcn35/dcn35_resource.c index 0094ef223c5d..67ab8c1962ff 100644 --- a/drivers/gpu/drm/amd/display/dc/resource/dcn35/dcn35_resource.c +++ b/drivers/gpu/drm/amd/display/dc/resource/dcn35/dcn35_resource.c @@ -721,7 +721,7 @@ static const struct dc_debug_options debug_defaults_drv = { .disable_dpp_power_gate = true, .disable_hubp_power_gate = true, .disable_optc_power_gate = true, /*should the same as above two*/ - .disable_hpo_power_gate = false, /*dmubfw force domain25 on*/ + .disable_hpo_power_gate = true, /*dmubfw force domain25 on*/ .disable_clock_gate = false, .disable_dsc_power_gate = true, .vsr_support = true, -- 2.50.1