MMHUB PG needs to be disabled for Picasso for stability reasons.

Signed-off-by: Evan Quan <evan.q...@amd.com>
Change-Id: Iea0ec757582a764ab5a000d7cc411fb814ffb19f
---
 drivers/gpu/drm/amd/amdgpu/soc15.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/amd/amdgpu/soc15.c 
b/drivers/gpu/drm/amd/amdgpu/soc15.c
index e07a5fd09d06..15ee56406bc1 100644
--- a/drivers/gpu/drm/amd/amdgpu/soc15.c
+++ b/drivers/gpu/drm/amd/amdgpu/soc15.c
@@ -1081,8 +1081,11 @@ 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 |
-- 
2.29.0

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