[PATCH] drm/amd/display: Enable VM support only on APUs newer than CZ

[Harry Wentland]

VM support is only available for CZ and newer APUs. Trying to
enable it for dGPU will blow up in DC.

Signed-off-by: Harry Wentland <harry.wentland at amd.com>
Suggested-by: Alex Deucher <alexander.deucher at amd.com>
CC: Christian Koenig <christian.koenig at amd.com>
---
 drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
index 26f6d5e4c08c..332761f643f6 100644
--- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
+++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
@@ -427,6 +427,10 @@ static int amdgpu_dm_init(struct amdgpu_device *adev)
 		amdgpu_dm_initialize_fbc(adev);
 	init_data.fbc_gpu_addr = adev->dm.compressor.gpu_addr;
 #endif
+
+	if (adev->flags & AMD_IS_APU && adev->asic_type >= CHIP_CARRIZO)
+		init_data.flags.gpu_vm_support = true;
+
 	/* Display Core create. */
 	adev->dm.dc = dc_create(&init_data);
 
-- 
2.14.1