From: <gregkh@linuxfoundation.org>
To: hamza.mahfooz@amd.com,alexander.deucher@amd.com,jerry.zuo@amd.com
Cc: <stable@vger.kernel.org>
Subject: FAILED: patch "[PATCH] drm/amd/display: limit the v_startup workaround to ASICs" failed to apply to 6.5-stable tree
Date: Fri, 24 Nov 2023 14:13:58 +0000 [thread overview]
Message-ID: <2023112458-decrease-purging-0c4d@gregkh> (raw)
The patch below does not apply to the 6.5-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-6.5.y
git checkout FETCH_HEAD
git cherry-pick -x 813ba1ff8484e801d2ef155e0e5388b8a7691788
# <resolve conflicts, build, test, etc.>
git commit -s
git send-email --to '<stable@vger.kernel.org>' --in-reply-to '2023112458-decrease-purging-0c4d@gregkh' --subject-prefix 'PATCH 6.5.y' HEAD^..
Possible dependencies:
813ba1ff8484 ("drm/amd/display: limit the v_startup workaround to ASICs older than DCN3.1")
63461ea3fb40 ("Revert "drm/amd/display: Remove v_startup workaround for dcn3+"")
thanks,
greg k-h
------------------ original commit in Linus's tree ------------------
From 813ba1ff8484e801d2ef155e0e5388b8a7691788 Mon Sep 17 00:00:00 2001
From: Hamza Mahfooz <hamza.mahfooz@amd.com>
Date: Thu, 31 Aug 2023 15:22:35 -0400
Subject: [PATCH] drm/amd/display: limit the v_startup workaround to ASICs
older than DCN3.1
Since, calling dcn20_adjust_freesync_v_startup() on DCN3.1+ ASICs
can cause the display to flicker and underflow to occur, we shouldn't
call it for them. So, ensure that the DCN version is less than
DCN_VERSION_3_1 before calling dcn20_adjust_freesync_v_startup().
Cc: stable@vger.kernel.org
Reviewed-by: Fangzhi Zuo <jerry.zuo@amd.com>
Signed-off-by: Hamza Mahfooz <hamza.mahfooz@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
diff --git a/drivers/gpu/drm/amd/display/dc/dml/dcn20/dcn20_fpu.c b/drivers/gpu/drm/amd/display/dc/dml/dcn20/dcn20_fpu.c
index 1bfdf0271fdf..a68fb45ed487 100644
--- a/drivers/gpu/drm/amd/display/dc/dml/dcn20/dcn20_fpu.c
+++ b/drivers/gpu/drm/amd/display/dc/dml/dcn20/dcn20_fpu.c
@@ -1099,7 +1099,8 @@ void dcn20_calculate_dlg_params(struct dc *dc,
context->res_ctx.pipe_ctx[i].plane_res.bw.dppclk_khz =
pipes[pipe_idx].clks_cfg.dppclk_mhz * 1000;
context->res_ctx.pipe_ctx[i].pipe_dlg_param = pipes[pipe_idx].pipe.dest;
- if (context->res_ctx.pipe_ctx[i].stream->adaptive_sync_infopacket.valid)
+ if (dc->ctx->dce_version < DCN_VERSION_3_1 &&
+ context->res_ctx.pipe_ctx[i].stream->adaptive_sync_infopacket.valid)
dcn20_adjust_freesync_v_startup(
&context->res_ctx.pipe_ctx[i].stream->timing,
&context->res_ctx.pipe_ctx[i].pipe_dlg_param.vstartup_start);
reply other threads:[~2023-11-24 14:14 UTC|newest]
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