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@amd.com>
Acked-by: Jasdeep Dhillon <jdhillon@amd.com>
Signed-off-by: Dillon Varone <Dillon.Varone@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>

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 f4b176599be7a185da701399515ee0221357f27d..0ea406145c1d79397dbfe7d453951aa63ebf33b9 100644 (file)
--- 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