This is a note to let you know that I've just added the patch titled
drm/amd/display: Update min Z8 residency time to 2100 for DCN314
to the 6.1-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
drm-amd-display-update-min-z8-residency-time-to-2100-for-dcn314.patch
and it can be found in the queue-6.1 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From 4636a211980052ca0df90265c8a3ed2d46099091 Mon Sep 17 00:00:00 2001
From: Nicholas Kazlauskas <nicholas.kazlauskas@xxxxxxx>
Date: Wed, 8 Nov 2023 10:59:00 -0500
Subject: drm/amd/display: Update min Z8 residency time to 2100 for DCN314
From: Nicholas Kazlauskas <nicholas.kazlauskas@xxxxxxx>
commit 4636a211980052ca0df90265c8a3ed2d46099091 upstream.
[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@xxxxxxxxxxxxxxx # 6.1+
Reviewed-by: Syed Hassan <syed.hassan@xxxxxxx>
Acked-by: Hamza Mahfooz <hamza.mahfooz@xxxxxxx>
Signed-off-by: Nicholas Kazlauskas <nicholas.kazlauskas@xxxxxxx>
Signed-off-by: Alex Deucher <alexander.deucher@xxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
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,
Patches currently in stable-queue which might be from nicholas.kazlauskas@xxxxxxx are
queue-6.1/drm-amd-display-remove-min_dst_y_next_start-check-for-z8.patch
queue-6.1/drm-amd-display-update-min-z8-residency-time-to-2100-for-dcn314.patch
