From 4636a211980052ca0df90265c8a3ed2d46099091 Mon Sep 17 00:00:00 2001
From: Nicholas Kazlauskas <nicholas.kazlauskas@amd.com>
Date: Wed, 8 Nov 2023 10:59:00 -0500
Subject: [PATCH] drm/amd/display: Update min Z8 residency time to 2100 for DCN314
Git-commit: 4636a211980052ca0df90265c8a3ed2d46099091
Patch-mainline: v6.7-rc4
References: git-fixes
[Why]
Some panels with residency period of 2054 exhibit flickering with
Z8 at the end of the frame.
[How]
As a workaround, increase the limit to block these panels.
Cc: stable@vger.kernel.org # 6.1+
Reviewed-by: Syed Hassan <syed.hassan@amd.com>
Acked-by: Hamza Mahfooz <hamza.mahfooz@amd.com>
Signed-off-by: Nicholas Kazlauskas <nicholas.kazlauskas@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Acked-by: Takashi Iwai <tiwai@suse.de>
---
drivers/gpu/drm/amd/display/dc/dcn314/dcn314_resource.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- a/drivers/gpu/drm/amd/display/dc/dcn314/dcn314_resource.c
+++ b/drivers/gpu/drm/amd/display/dc/dcn314/dcn314_resource.c
@@ -884,7 +884,7 @@ static const struct dc_plane_cap plane_c
static const struct dc_debug_options debug_defaults_drv = {
.disable_z10 = false,
.enable_z9_disable_interface = true,
- .minimum_z8_residency_time = 2000,
+ .minimum_z8_residency_time = 2100,
.psr_skip_crtc_disable = true,
.disable_dmcu = true,
.force_abm_enable = false,