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