This is a note to let you know that I've just added the patch titled
drm/amd/display: Limit display scaling to up to true 4k for DCN 3.1
to the 5.14-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-limit-display-scaling-to-up-to-true-4k-for-dcn-3.1.patch
and it can be found in the queue-5.14 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From c21b105380cf86e829c68586ca1315cfc253ad8c Mon Sep 17 00:00:00 2001
From: Nikola Cornij <nikola.cornij@xxxxxxx>
Date: Tue, 28 Sep 2021 22:43:52 -0400
Subject: drm/amd/display: Limit display scaling to up to true 4k for DCN 3.1
From: Nikola Cornij <nikola.cornij@xxxxxxx>
commit c21b105380cf86e829c68586ca1315cfc253ad8c upstream.
[why]
The requirement is that image width up to 4096 shall be supported
Reviewed-by: Aric Cyr <Aric.Cyr@xxxxxxx>
Acked-by: Agustin Gutierrez Sanchez <agustin.gutierrez@xxxxxxx>
Signed-off-by: Nikola Cornij <nikola.cornij@xxxxxxx>
Tested-by: Daniel Wheeler <daniel.wheeler@xxxxxxx>
Signed-off-by: Alex Deucher <alexander.deucher@xxxxxxx>
Cc: stable@xxxxxxxxxxxxxxx
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/gpu/drm/amd/display/dc/dcn31/dcn31_resource.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- a/drivers/gpu/drm/amd/display/dc/dcn31/dcn31_resource.c
+++ b/drivers/gpu/drm/amd/display/dc/dcn31/dcn31_resource.c
@@ -928,7 +928,7 @@ static const struct dc_debug_options deb
.disable_dcc = DCC_ENABLE,
.vsr_support = true,
.performance_trace = false,
- .max_downscale_src_width = 3840,/*upto 4K*/
+ .max_downscale_src_width = 4096,/*upto true 4K*/
.disable_pplib_wm_range = false,
.scl_reset_length10 = true,
.sanity_checks = false,
Patches currently in stable-queue which might be from nikola.cornij@xxxxxxx are
queue-5.14/drm-amd-display-increase-watermark-latencies-for-dcn3.1.patch
queue-5.14/drm-amd-display-limit-display-scaling-to-up-to-true-4k-for-dcn-3.1.patch
