The patch below does not apply to the 6.4-stable tree. If someone wants it applied there, or to any other stable or longterm tree, then please email the backport, including the original git commit id to stable@vger.kernel.org.

To reproduce the conflict and resubmit, you may use the following commands:

git fetch https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/ linux-6.4.y git checkout FETCH_HEAD git cherry-pick -x b5389eca7b39026452dfc1d2cd5b05448c631298 # <resolve conflicts, build, test, etc.> git commit -s git send-email --to 'stable@vger.kernel.org' --in-reply-to '2023072159-equation-emit-84b5@gregkh' --subject-prefix 'PATCH 6.4.y' HEAD^..

Possible dependencies:

thanks,

greg k-h

------------------ original commit in Linus's tree ------------------

From b5389eca7b39026452dfc1d2cd5b05448c631298 Mon Sep 17 00:00:00 2001 From: Leo Chen sancchen@amd.com Date: Tue, 11 Apr 2023 10:49:38 -0400 Subject: [PATCH] drm/amd/display: Lowering min Z8 residency time

[Why & How] Per HW team request, we're lowering the minimum Z8 residency time to 2000us. This enables Z8 support for additional modes we were previously blocking like 2k>60hz

Cc: stable@vger.kernel.org Tested-by: Daniel Wheeler daniel.wheeler@amd.com Reviewed-by: Nicholas Kazlauskas Nicholas.Kazlauskas@amd.com Acked-by: Rodrigo Siqueira Rodrigo.Siqueira@amd.com Signed-off-by: Leo Chen sancchen@amd.com Signed-off-by: Alex Deucher alexander.deucher@amd.com

diff --git a/drivers/gpu/drm/amd/display/dc/dcn314/dcn314_resource.c b/drivers/gpu/drm/amd/display/dc/dcn314/dcn314_resource.c index 24806acc8438..abeeede38fb3 100644 --- a/drivers/gpu/drm/amd/display/dc/dcn314/dcn314_resource.c +++ b/drivers/gpu/drm/amd/display/dc/dcn314/dcn314_resource.c @@ -885,7 +885,7 @@ static const struct dc_plane_cap plane_cap = { static const struct dc_debug_options debug_defaults_drv = { .disable_z10 = false, .enable_z9_disable_interface = true, - .minimum_z8_residency_time = 3080, + .minimum_z8_residency_time = 2000, .psr_skip_crtc_disable = true, .disable_dmcu = true, .force_abm_enable = false,