drm/amd/display: Reduce sdp bw after urgent to 90%

commit e1a600208286c197c2696e51fc313e49889315bd upstream.

[Description]
Reduce expected SDP bandwidth due to poor QoS and
arbitration issues on high bandwidth configs

Cc: Mario Limonciello <mario.limonciello@amd.com>
Cc: Alex Deucher <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org
Acked-by: Stylon Wang <stylon.wang@amd.com>
Signed-off-by: Alvin Lee <alvin.lee2@amd.com>
Reviewed-by: Nevenko Stupar <Nevenko.Stupar@amd.com>
Tested-by: Daniel Wheeler <daniel.wheeler@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/gpu/drm/amd/display/dc/dml/dcn32/dcn32_fpu.c b/drivers/gpu/drm/amd/display/dc/dml/dcn32/dcn32_fpu.c
index e47828e3b6d5d63c853f617f303303128581b481..7c06a339ab93cbc4731bf5545fc03c2ad19827f3 100644 (file)
--- a/drivers/gpu/drm/amd/display/dc/dml/dcn32/dcn32_fpu.c
+++ b/drivers/gpu/drm/amd/display/dc/dml/dcn32/dcn32_fpu.c
@@ -138,7 +138,7 @@ struct _vcs_dpi_soc_bounding_box_st dcn3_2_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