drm/amd/display: Update efficiency bandwidth for dcn351

Fangzhi Zuo · alexdeucher · commit 7ae37db29a8b · 2024-07-01T16:52:24.000-04:00
Fix 4k240 underflow on dcn351

Acked-by: Rodrigo Siqueira &lt;rodrigo.siqueira@amd.com&gt;
Signed-off-by: Fangzhi Zuo &lt;Jerry.Zuo@amd.com&gt;
Tested-by: Daniel Wheeler &lt;daniel.wheeler@amd.com&gt;
Signed-off-by: Alex Deucher &lt;alexander.deucher@amd.com&gt;
diff --git a/drivers/gpu/drm/amd/display/dc/dml2/dml2_translation_helper.c b/drivers/gpu/drm/amd/display/dc/dml2/dml2_translation_helper.c
@@ -234,6 +234,7 @@ void dml2_init_socbb_params(struct dml2_context *dml2, const struct dc *in_dc, s
 		out->round_trip_ping_latency_dcfclk_cycles = 106;
 		out->smn_latency_us = 2;
 		out->dispclk_dppclk_vco_speed_mhz = 3600;
+		out->pct_ideal_dram_bw_after_urgent_pixel_only = 65.0;
 		break;
 
 	}

Original file line number	Diff line number	Diff line change
`@@ -234,6 +234,7 @@ void dml2_init_socbb_params(struct dml2_context dml2, const struct dc in_dc, s`
`234`	`234`	`out->round_trip_ping_latency_dcfclk_cycles = 106;`
`235`	`235`	`out->smn_latency_us = 2;`
`236`	`236`	`out->dispclk_dppclk_vco_speed_mhz = 3600;`
	`237`	`+ out->pct_ideal_dram_bw_after_urgent_pixel_only = 65.0;`
`237`	`238`	`break;`
`238`	`239`
`239`	`240`	`}`