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drm/amd/display: Add a variable to update FCLK latency

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[Description]
Add a variable to update FCLK latency

Reviewed-by: Martin Leung <Martin.Leung@amd.com>
Acked-by: Tom Chung <chiahsuan.chung@amd.com>
Signed-off-by: Alvin Lee <alvin.lee2@amd.com>
Tested-by: Daniel Wheeler <daniel.wheeler@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Alvin Lee 2022-07-20 13:16:59 -04:00 committed by Alex Deucher
parent 2de09ce41f
commit 0cd34ce82b
3 changed files with 15 additions and 0 deletions
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1
drivers/gpu/drm/amd/display/dc/dc.h
View File

@ -609,6 +609,7 @@ struct dc_bounding_box_overrides {
int percent_of_ideal_drambw;
int dram_clock_change_latency_ns;
int dummy_clock_change_latency_ns;
int fclk_clock_change_latency_ns;
/* This forces a hard min on the DCFCLK we use
* for DML. Unlike the debug option for forcing
* DCFCLK, this override affects watermark calculations

7
drivers/gpu/drm/amd/display/dc/dml/dcn32/dcn32_fpu.c
View File

@ -2098,6 +2098,13 @@ void dcn32_update_bw_bounding_box_fpu(struct dc *dc, struct clk_bw_params *bw_pa
dc->bb_overrides.dram_clock_change_latency_ns / 1000.0;
}
if ((int)(dcn3_2_soc.fclk_change_latency_us * 1000)
!= dc->bb_overrides.fclk_clock_change_latency_ns
&& dc->bb_overrides.fclk_clock_change_latency_ns) {
dcn3_2_soc.fclk_change_latency_us =
dc->bb_overrides.fclk_clock_change_latency_ns / 1000;
}
if ((int)(dcn3_2_soc.dummy_pstate_latency_us * 1000)
!= dc->bb_overrides.dummy_clock_change_latency_ns
&& dc->bb_overrides.dummy_clock_change_latency_ns) {

7
drivers/gpu/drm/amd/display/dc/dml/dcn321/dcn321_fpu.c
View File

@ -498,6 +498,13 @@ void dcn321_update_bw_bounding_box_fpu(struct dc *dc, struct clk_bw_params *bw_p
dc->bb_overrides.dram_clock_change_latency_ns / 1000.0;
}
if ((int)(dcn3_21_soc.fclk_change_latency_us * 1000)
!= dc->bb_overrides.fclk_clock_change_latency_ns
&& dc->bb_overrides.fclk_clock_change_latency_ns) {
dcn3_21_soc.fclk_change_latency_us =
dc->bb_overrides.fclk_clock_change_latency_ns / 1000;
}
if ((int)(dcn3_21_soc.dummy_pstate_latency_us * 1000)
!= dc->bb_overrides.dummy_clock_change_latency_ns
&& dc->bb_overrides.dummy_clock_change_latency_ns) {