mirrors/linux
1
0
Fork 0
mirror of https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git synced 2026-05-01 03:44:27 -04:00
Code Issues Packages Projects Releases Wiki Activity

drm/amd/display: Enabling urgent latency adjustment for DCN35

Browse Source 
[Why]

Underflow occurs when running netflix in a 4k144 eDP + 4k60 setup.
Increasing DCFCLK or urgent latency watermark fixes the issue. Implementing
this workaround for now while we figure out why this is happenning in DCN.

[How]

Enable urgent latency adjustment and match the reference to existing ASIC
that also see increased latency at low FCLK.

Reviewed-by: Nicholas Kazlauskas <nicholas.kazlauskas@amd.com>
Acked-by: Wayne Lin <wayne.lin@amd.com>
Signed-off-by: Nicholas Susanto <nicholas.susanto@amd.com>
Tested-by: Daniel Wheeler <daniel.wheeler@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Nicholas Susanto
2024-02-28 14:14:17 -05:00
committed by Alex Deucher
parent 3cfaadbe0f
commit b72a7e0fd0
1 changed files with 2 additions and 2 deletions
Download Patch File Download Diff File Expand all files Collapse all files

4
drivers/gpu/drm/amd/display/dc/dml/dcn35/dcn35_fpu.c
View File

@@ -195,9 +195,9 @@ struct _vcs_dpi_soc_bounding_box_st dcn3_5_soc = {
.dcn_downspread_percent = 0.5,
.gpuvm_min_page_size_bytes = 4096,
.hostvm_min_page_size_bytes = 4096,
.do_urgent_latency_adjustment = 0,
.do_urgent_latency_adjustment = 1,
.urgent_latency_adjustment_fabric_clock_component_us = 0,
.urgent_latency_adjustment_fabric_clock_reference_mhz = 0,
.urgent_latency_adjustment_fabric_clock_reference_mhz = 3000,
};
void dcn35_build_wm_range_table_fpu(struct clk_mgr *clk_mgr)