linux-kernel - [PATCH 5.17 068/772] drm/amd/display: Disabling Z10 on DCN31

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Date:   Tue,  7 Jun 2022 18:54:20 +0200
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org, Eric Yang <Eric.Yang2@....com>,
        Pavle Kotarac <Pavle.Kotarac@....com>,
        Saaem Rizvi <syerizvi@....com>,
        Alex Deucher <alexander.deucher@....com>,
        Sasha Levin <sashal@...nel.org>
Subject: [PATCH 5.17 068/772] drm/amd/display: Disabling Z10 on DCN31

From: Saaem Rizvi <syerizvi@....com>

[ Upstream commit 5d5af34072c8b11f60960c3bea57ff9de5877791 ]

[WHY]
Z10 is should not be enabled by default on DCN31.

[HOW]
Using DC debug flags to disable Z10 by default on DCN31.

Reviewed-by: Eric Yang <Eric.Yang2@....com>
Acked-by: Pavle Kotarac <Pavle.Kotarac@....com>
Signed-off-by: Saaem Rizvi <syerizvi@....com>
Signed-off-by: Alex Deucher <alexander.deucher@....com>
Signed-off-by: Sasha Levin <sashal@...nel.org>
---
 drivers/gpu/drm/amd/display/dc/dcn31/dcn31_resource.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/gpu/drm/amd/display/dc/dcn31/dcn31_resource.c b/drivers/gpu/drm/amd/display/dc/dcn31/dcn31_resource.c
index f3933c9f5746..6966b72eefc6 100644
--- a/drivers/gpu/drm/amd/display/dc/dcn31/dcn31_resource.c
+++ b/drivers/gpu/drm/amd/display/dc/dcn31/dcn31_resource.c
@@ -1030,6 +1030,7 @@ static const struct dc_debug_options debug_defaults_drv = {
 			.afmt = true,
 		}
 	},
+	.disable_z10 = true,
 	.optimize_edp_link_rate = true,
 	.enable_sw_cntl_psr = true,
 	.apply_vendor_specific_lttpr_wa = true,
-- 
2.35.1