drm/amd/display: Update efficiency bandwidth for dcn351

[ Upstream commit 7ae37db29a8bc4d3d116a409308dd98fc3a0b1b3 ]

Fix 4k240 underflow on dcn351

Acked-by: Rodrigo Siqueira <rodrigo.siqueira@amd.com>
Signed-off-by: Fangzhi Zuo <Jerry.Zuo@amd.com>
Tested-by: Daniel Wheeler <daniel.wheeler@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>

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
index a20f28a5d2e7b09db5a02d4641e4f89bfcfcdcd6..3af759dca6ebfc860998c7b1199d70697a1219c7 100644 (file)
--- a/drivers/gpu/drm/amd/display/dc/dml2/dml2_translation_helper.c
+++ b/drivers/gpu/drm/amd/display/dc/dml2/dml2_translation_helper.c
@@ -233,6 +233,7 @@ 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;
 
        }