Commit e7f2f4cd authored Sep 01, 2022 by George Shen Committed by Alex Deucher Sep 19, 2022

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>

parent 5fb78600

drivers/gpu/drm/amd/display/dc/dml/dcn32/dcn32_fpu.c

+1 −0

Original line number	Diff line number	Diff line
		@@ -2197,6 +2197,7 @@ void dcn32_update_bw_bounding_box_fpu(struct dc dc, struct clk_bw_params bw_pa
		if ((int)(dcn3_2_soc.urgent_latency_us * 1000) != dc->bb_overrides.urgent_latency_ns
		&& dc->bb_overrides.urgent_latency_ns) {
		dcn3_2_soc.urgent_latency_us = dc->bb_overrides.urgent_latency_ns / 1000.0;
		dcn3_2_soc.urgent_latency_pixel_data_only_us = dc->bb_overrides.urgent_latency_ns / 1000.0;
		}

		if ((int)(dcn3_2_soc.dram_clock_change_latency_us * 1000)

drivers/gpu/drm/amd/display/dc/dml/dcn321/dcn321_fpu.c

+1 −0

Original line number	Diff line number	Diff line
		@@ -489,6 +489,7 @@ void dcn321_update_bw_bounding_box_fpu(struct dc dc, struct clk_bw_params bw_p
		if ((int)(dcn3_21_soc.urgent_latency_us * 1000) != dc->bb_overrides.urgent_latency_ns
		&& dc->bb_overrides.urgent_latency_ns) {
		dcn3_21_soc.urgent_latency_us = dc->bb_overrides.urgent_latency_ns / 1000.0;
		dcn3_21_soc.urgent_latency_pixel_data_only_us = dc->bb_overrides.urgent_latency_ns / 1000.0;
		}

		if ((int)(dcn3_21_soc.dram_clock_change_latency_us * 1000)