drm/amdgpu: disable MMHUB PG for Picasso

commit f626dd0ff05043e5a7154770cc7cda66acee33a3 upstream.

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

Signed-off-by: Evan Quan <evan.quan@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/gpu/drm/amd/amdgpu/soc15.c b/drivers/gpu/drm/amd/amdgpu/soc15.c
index 0fc97c364fd765bf7b1c16f5a368698fd62b406a..d327fe106cea3bbd7126e264b5dc8ba7decd57f2 100644 (file)
--- a/drivers/gpu/drm/amd/amdgpu/soc15.c
+++ b/drivers/gpu/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 |