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 a00e595207d001432a85758954c3a6f6a9896368 # <resolve conflicts, build, test, etc.> git commit -s git send-email --to 'stable@vger.kernel.org' --in-reply-to '2023072152-disbelief-wrongdoer-e9f2@gregkh' --subject-prefix 'PATCH 6.4.y' HEAD^..

Possible dependencies:

thanks,

greg k-h

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

From a00e595207d001432a85758954c3a6f6a9896368 Mon Sep 17 00:00:00 2001 From: Alvin Lee Alvin.Lee2@amd.com Date: Thu, 27 Apr 2023 15:10:41 -0400 Subject: [PATCH] drm/amd/display: Block SubVP high refresh when VRR active fixed

[Description] - SubVP high refresh is blocked when VRR is active variable, but we should also block it for when VRR is active fixed (video use case)

Reviewed-by: Nevenko Stupar Nevenko.Stupar@amd.com Reviewed-by: Jun Lei Jun.Lei@amd.com Cc: Mario Limonciello mario.limonciello@amd.com Cc: Alex Deucher alexander.deucher@amd.com Cc: stable@vger.kernel.org Acked-by: Alex Hung alex.hung@amd.com Signed-off-by: Alvin Lee Alvin.Lee2@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/dml/dcn32/dcn32_fpu.c b/drivers/gpu/drm/amd/display/dc/dml/dcn32/dcn32_fpu.c index 46fd7b68857c..cd28980b2b56 100644 --- a/drivers/gpu/drm/amd/display/dc/dml/dcn32/dcn32_fpu.c +++ b/drivers/gpu/drm/amd/display/dc/dml/dcn32/dcn32_fpu.c @@ -2825,7 +2825,7 @@ bool dcn32_allow_subvp_high_refresh_rate(struct dc *dc, struct dc_state *context uint32_t i;

if (!dc->debug.disable_subvp_high_refresh && pipe->stream && - pipe->plane_state && !pipe->stream->vrr_active_variable) { + pipe->plane_state && !(pipe->stream->vrr_active_variable || pipe->stream->vrr_active_fixed)) { refresh_rate = (pipe->stream->timing.pix_clk_100hz * 100 + pipe->stream->timing.v_total * pipe->stream->timing.h_total - 1) / (double)(pipe->stream->timing.v_total * pipe->stream->timing.h_total);