This is a note to let you know that I've just added the patch titled drm/amd/display: Reduce expected sdp bandwidth for dcn321 to the 6.2-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-reduce-expected-sdp-bandwidth-for-dc.patch and it can be found in the queue-6.2 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let <stable@xxxxxxxxxxxxxxx> know about it. commit 7efb193e1285578a9b8de4e6b2a93f7b613e3fbb Author: Dillon Varone <Dillon.Varone@xxxxxxx> Date: Fri Dec 2 22:56:57 2022 -0500 drm/amd/display: Reduce expected sdp bandwidth for dcn321 [ Upstream commit 6b81090d6d4cc0fd818c9ec9dbb6906f921ad396 ] [Description] Modify soc BB to reduce expected sdp bandwidth and align with measurements to fix underflow issues. Reviewed-by: Jun Lei <Jun.Lei@xxxxxxx> Acked-by: Jasdeep Dhillon <jdhillon@xxxxxxx> Signed-off-by: Dillon Varone <Dillon.Varone@xxxxxxx> Signed-off-by: Alex Deucher <alexander.deucher@xxxxxxx> Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx> diff --git a/drivers/gpu/drm/amd/display/dc/dml/dcn321/dcn321_fpu.c b/drivers/gpu/drm/amd/display/dc/dml/dcn321/dcn321_fpu.c index f4b176599be7a..0ea406145c1d7 100644 --- a/drivers/gpu/drm/amd/display/dc/dml/dcn321/dcn321_fpu.c +++ b/drivers/gpu/drm/amd/display/dc/dml/dcn321/dcn321_fpu.c @@ -136,7 +136,7 @@ struct _vcs_dpi_soc_bounding_box_st dcn3_21_soc = { .urgent_out_of_order_return_per_channel_pixel_only_bytes = 4096, .urgent_out_of_order_return_per_channel_pixel_and_vm_bytes = 4096, .urgent_out_of_order_return_per_channel_vm_only_bytes = 4096, - .pct_ideal_sdp_bw_after_urgent = 100.0, + .pct_ideal_sdp_bw_after_urgent = 90.0, .pct_ideal_fabric_bw_after_urgent = 67.0, .pct_ideal_dram_sdp_bw_after_urgent_pixel_only = 20.0, .pct_ideal_dram_sdp_bw_after_urgent_pixel_and_vm = 60.0, // N/A, for now keep as is until DML implemented