From: jsg <jsg@openbsd.org>
Date: Wed, 2 Mar 2022 12:57:11 +0000 (+0000)
Subject: drm/amdgpu: disable MMHUB PG for Picasso
X-Git-Url: http://artulab.com/gitweb/?a=commitdiff_plain;h=b8afe0ea438ee56892af10cdc457a75e243249b0;p=openbsd

drm/amdgpu: disable MMHUB PG for Picasso

From Evan Quan
70b2413ac30c88a049f179d674d29d1f6af1d29a in linux 5.15.y/5.15.26
f626dd0ff05043e5a7154770cc7cda66acee33a3 in mainline linux
---

diff --git a/sys/dev/pci/drm/amd/amdgpu/soc15.c b/sys/dev/pci/drm/amd/amdgpu/soc15.c
index 5a4bc466caa..7542169c70b 100644
--- a/sys/dev/pci/drm/amd/amdgpu/soc15.c
+++ b/sys/dev/pci/drm/amd/amdgpu/soc15.c
@@ -1273,8 +1273,11 @@ static int soc15_common_early_init(void *handle)
 				AMD_CG_SUPPORT_SDMA_LS |
 				AMD_CG_SUPPORT_VCN_MGCG;
 
+			/*
+			 * MMHUB PG needs to be disabled for Picasso for
+			 * stability reasons.
+			 */
 			adev->pg_flags = AMD_PG_SUPPORT_SDMA |
-				AMD_PG_SUPPORT_MMHUB |
 				AMD_PG_SUPPORT_VCN;
 		} else {
 			adev->cg_flags = AMD_CG_SUPPORT_GFX_MGCG |