Commit 8d829836 authored by Joshua Aberback's avatar Joshua Aberback Committed by Alex Deucher
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drm/amd/display: Add dummy p-state latency bounding box override 



[Why]

For debugging, it can be useful to be able to modify the dummy
p-state latency, this will make it easier to do so.

Signed-off-by: default avatarJoshua Aberback <joshua.aberback@amd.com>
Reviewed-by: default avatarWesley Chalmers <Wesley.Chalmers@amd.com>
Acked-by: default avatarAurabindo Pillai <aurabindo.pillai@amd.com>
Signed-off-by: default avatarAlex Deucher <alexander.deucher@amd.com>
parent 18400f91

drivers/gpu/drm/amd/display/dc/dc.h

+1 −0
Original line number Diff line number Diff line
@@ -478,6 +478,7 @@ struct dc_bounding_box_overrides { 
	int urgent_latency_ns;

	int percent_of_ideal_drambw;

	int dram_clock_change_latency_ns;

	int dummy_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

drivers/gpu/drm/amd/display/dc/dcn20/dcn20_resource.c

+7 −0
Original line number Diff line number Diff line
@@ -3467,6 +3467,13 @@ void dcn20_patch_bounding_box(struct dc *dc, struct _vcs_dpi_soc_bounding_box_st 
		bb->dram_clock_change_latency_us =

				dc->bb_overrides.dram_clock_change_latency_ns / 1000.0;

	}



	if ((int)(bb->dummy_pstate_latency_us * 1000)

				!= dc->bb_overrides.dummy_clock_change_latency_ns

			&& dc->bb_overrides.dummy_clock_change_latency_ns) {

		bb->dummy_pstate_latency_us =

				dc->bb_overrides.dummy_clock_change_latency_ns / 1000.0;

	}

}



static struct _vcs_dpi_soc_bounding_box_st *get_asic_rev_soc_bb(