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FAILED: patch "[PATCH] drm/amd/display: limit the v_startup workaround to ASICs" failed to apply to 6.5-stable tree

PATCH [email protected] 1 participant 1 message Nov 24, 2023

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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 <[email protected]>.

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 '<[email protected]>' --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 <[email protected]>
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().

drivers/gpu/drm/amd/display/dc/dml/dcn20/dcn20_fpu.c +2 -1
index 1bfdf0271fdf..a68fb45ed487 100644
@@ -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);