[PATCH 5.16 020/164] drm/amdgpu: disable MMHUB PG for Picasso

Greg Kroah-Hartman
2022-02-28T18:04:01Z

From: Evan Quan <evan.quan@amd.com>

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>
---
drivers/gpu/drm/amd/amdgpu/soc15.c | 5 ++++-
1 file changed, 4 insertions(+), 1 deletion(-)

--- a/drivers/gpu/drm/amd/amdgpu/soc15.c
+++ b/drivers/gpu/drm/amd/amdgpu/soc15.c
@@ -1114,8 +1114,11 @@ static int soc15_common_early_init(void
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 |