From: Roman Li <Roman.Li@amd.com>
Date: Mon, 14 Jul 2025 18:37:33 +0000 (-0400)
Subject: drm/amd/display: Disable dsc_power_gate for dcn314 by default
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=02f3ec53177243d32ee8b6f8ba99136d7887ee3a;p=thirdparty%2Flinux.git

drm/amd/display: Disable dsc_power_gate for dcn314 by default

[Why]
"REG_WAIT timeout 1us * 1000 tries - dcn314_dsc_pg_control line"
warnings seen after resuming from s2idle.
DCN314 has issues with DSC power gating that cause REG_WAIT timeouts
when attempting to power down DSC blocks.

[How]
Disable dsc_power_gate for dcn314 by default.

Reviewed-by: Nicholas Kazlauskas <nicholas.kazlauskas@amd.com>
Signed-off-by: Roman Li <Roman.Li@amd.com>
Signed-off-by: Ivan Lipski <ivan.lipski@amd.com>
Tested-by: Daniel Wheeler <daniel.wheeler@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
---

diff --git a/drivers/gpu/drm/amd/display/dc/resource/dcn314/dcn314_resource.c b/drivers/gpu/drm/amd/display/dc/resource/dcn314/dcn314_resource.c
index de708fdc1e809..663c49cce4aa3 100644
--- a/drivers/gpu/drm/amd/display/dc/resource/dcn314/dcn314_resource.c
+++ b/drivers/gpu/drm/amd/display/dc/resource/dcn314/dcn314_resource.c
@@ -926,6 +926,7 @@ static const struct dc_debug_options debug_defaults_drv = {
 	.seamless_boot_odm_combine = true,
 	.enable_legacy_fast_update = true,
 	.using_dml2 = false,
+	.disable_dsc_power_gate = true,
 };
 
 static const struct dc_panel_config panel_config_defaults = {