From: jsg <jsg@openbsd.org>
Date: Mon, 3 Oct 2022 11:48:47 +0000 (+0000)
Subject: drm/amd/pm: disable BACO entry/exit completely on several sienna cichlid cards
X-Git-Url: http://artulab.com/gitweb/?a=commitdiff_plain;h=2d5c1ca03d1136ecccaeee036f12ca6d065ee56f;p=openbsd

drm/amd/pm: disable BACO entry/exit completely on several sienna cichlid cards

From Guchun Chen
f76d6f309a685d24a32703b4d5c5a71e76f4b793 in linux 5.15.y/5.15.71
7c6fb61a400bf3218c6504cb2d48858f98822c9d in mainline linux
---

diff --git a/sys/dev/pci/drm/amd/pm/swsmu/smu11/sienna_cichlid_ppt.c b/sys/dev/pci/drm/amd/pm/swsmu/smu11/sienna_cichlid_ppt.c
index 628f896f2f7..0e49900d17b 100644
--- a/sys/dev/pci/drm/amd/pm/swsmu/smu11/sienna_cichlid_ppt.c
+++ b/sys/dev/pci/drm/amd/pm/swsmu/smu11/sienna_cichlid_ppt.c
@@ -358,6 +358,17 @@ 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;
+
 	}
 }