linux-kernel - [PATCH AUTOSEL 5.19 06/16] drm/amd/pm: disable BACO entry/exit completely on several sienna cichlid cards

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Date:   Wed, 21 Sep 2022 11:53:22 -0400
From:   Sasha Levin <sashal@...nel.org>
To:     linux-kernel@...r.kernel.org, stable@...r.kernel.org
Cc:     Guchun Chen <guchun.chen@....com>, Lijo Lazar <lijo.lazar@....com>,
        Alex Deucher <alexander.deucher@....com>,
        Sasha Levin <sashal@...nel.org>, evan.quan@....com,
        christian.koenig@....com, Xinhui.Pan@....com, airlied@...ux.ie,
        daniel@...ll.ch, luben.tuikov@....com,
        sathishkumar.sundararaju@....com, danijel.slivka@....com,
        Mohammadzafar.ziya@....com, amd-gfx@...ts.freedesktop.org,
        dri-devel@...ts.freedesktop.org
Subject: [PATCH AUTOSEL 5.19 06/16] drm/amd/pm: disable BACO entry/exit completely on several sienna cichlid cards

From: Guchun Chen <guchun.chen@....com>

[ Upstream commit 7c6fb61a400bf3218c6504cb2d48858f98822c9d ]

To avoid hardware intermittent failures.

Signed-off-by: Guchun Chen <guchun.chen@....com>
Reviewed-by: Lijo Lazar <lijo.lazar@....com>
Signed-off-by: Alex Deucher <alexander.deucher@....com>
Signed-off-by: Sasha Levin <sashal@...nel.org>
---
 .../gpu/drm/amd/pm/swsmu/smu11/sienna_cichlid_ppt.c   | 11 +++++++++++
 1 file changed, 11 insertions(+)

diff --git a/drivers/gpu/drm/amd/pm/swsmu/smu11/sienna_cichlid_ppt.c b/drivers/gpu/drm/amd/pm/swsmu/smu11/sienna_cichlid_ppt.c
index 32bb6b1d9526..d13e455c8827 100644
--- a/drivers/gpu/drm/amd/pm/swsmu/smu11/sienna_cichlid_ppt.c
+++ b/drivers/gpu/drm/amd/pm/swsmu/smu11/sienna_cichlid_ppt.c
@@ -368,6 +368,17 @@ static void sienna_cichlid_check_bxco_support(struct smu_context *smu)
 		smu_baco->platform_support =
 			(val & RCC_BIF_STRAP0__STRAP_PX_CAPABLE_MASK) ? true :
 									false;
+
+		/*
+		 * Disable BACO entry/exit completely on below SKUs to
+		 * avoid hardware intermittent failures.
+		 */
+		if (((adev->pdev->device == 0x73A1) &&
+		    (adev->pdev->revision == 0x00)) ||
+		    ((adev->pdev->device == 0x73BF) &&
+		    (adev->pdev->revision == 0xCF)))
+			smu_baco->platform_support = false;
+
 	}
 }
 
-- 
2.35.1