linux-kernel - [PATCH AUTOSEL 6.9 15/22] drm/amd/display: Update efficiency bandwidth for dcn351

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Message-ID: <20240716142519.2712487-15-sashal@kernel.org>
Date: Tue, 16 Jul 2024 10:24:22 -0400
From: Sasha Levin <sashal@...nel.org>
To: linux-kernel@...r.kernel.org,
	stable@...r.kernel.org
Cc: Fangzhi Zuo <Jerry.Zuo@....com>,
	Rodrigo Siqueira <rodrigo.siqueira@....com>,
	Daniel Wheeler <daniel.wheeler@....com>,
	Alex Deucher <alexander.deucher@....com>,
	Sasha Levin <sashal@...nel.org>,
	harry.wentland@....com,
	sunpeng.li@....com,
	Rodrigo.Siqueira@....com,
	christian.koenig@....com,
	Xinhui.Pan@....com,
	airlied@...il.com,
	daniel@...ll.ch,
	charlene.liu@....com,
	hamza.mahfooz@....com,
	nicholas.kazlauskas@....com,
	sungkim@....com,
	syed.hassan@....com,
	xi.liu@....com,
	Qingqing.Zhuo@....com,
	amd-gfx@...ts.freedesktop.org,
	dri-devel@...ts.freedesktop.org
Subject: [PATCH AUTOSEL 6.9 15/22] drm/amd/display: Update efficiency bandwidth for dcn351

From: Fangzhi Zuo <Jerry.Zuo@....com>

[ Upstream commit 7ae37db29a8bc4d3d116a409308dd98fc3a0b1b3 ]

Fix 4k240 underflow on dcn351

Acked-by: Rodrigo Siqueira <rodrigo.siqueira@....com>
Signed-off-by: Fangzhi Zuo <Jerry.Zuo@....com>
Tested-by: Daniel Wheeler <daniel.wheeler@....com>
Signed-off-by: Alex Deucher <alexander.deucher@....com>
Signed-off-by: Sasha Levin <sashal@...nel.org>
---
 drivers/gpu/drm/amd/display/dc/dml2/dml2_translation_helper.c | 1 +
 1 file changed, 1 insertion(+)

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 a20f28a5d2e7b..3af759dca6ebf 100644
--- 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;
 
 	}
-- 
2.43.0