Linux kernel mirror (for testing) git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel os linux

drm/amd/display: Fix urgent latency override for DCN32/DCN321

[Why]
The urgent latency override is useful when debugging issues
relating to underflow.

Current overridden variable is not correct and has no effect
on DCN3.2 and DCN3.21 DML calculations.

[How]
For DCN3.2 and DCN3.21, override the correct urgent latency
variable when bounding box override is present.

Reviewed-by: Alvin Lee <alvin.lee2@amd.com>
Reviewed-by: Nevenko Stupar <Nevenko.Stupar@amd.com>
Acked-by: Wayne Lin <wayne.lin@amd.com>
Signed-off-by: George Shen <george.shen@amd.com>
Tested-by: Daniel Wheeler <daniel.wheeler@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

authored by

George Shen and committed by
Alex Deucher
e7f2f4cd 5fb78600

+2
+1
drivers/gpu/drm/amd/display/dc/dml/dcn32/dcn32_fpu.c
··· 2197 2197 if ((int)(dcn3_2_soc.urgent_latency_us * 1000) != dc->bb_overrides.urgent_latency_ns 2198 2198 && dc->bb_overrides.urgent_latency_ns) { 2199 2199 dcn3_2_soc.urgent_latency_us = dc->bb_overrides.urgent_latency_ns / 1000.0; 2200 + dcn3_2_soc.urgent_latency_pixel_data_only_us = dc->bb_overrides.urgent_latency_ns / 1000.0; 2200 2201 } 2201 2202 2202 2203 if ((int)(dcn3_2_soc.dram_clock_change_latency_us * 1000)
+1
drivers/gpu/drm/amd/display/dc/dml/dcn321/dcn321_fpu.c
··· 489 489 if ((int)(dcn3_21_soc.urgent_latency_us * 1000) != dc->bb_overrides.urgent_latency_ns 490 490 && dc->bb_overrides.urgent_latency_ns) { 491 491 dcn3_21_soc.urgent_latency_us = dc->bb_overrides.urgent_latency_ns / 1000.0; 492 + dcn3_21_soc.urgent_latency_pixel_data_only_us = dc->bb_overrides.urgent_latency_ns / 1000.0; 492 493 } 493 494 494 495 if ((int)(dcn3_21_soc.dram_clock_change_latency_us * 1000)