drm/amdgpu: Fix DPX valid mode check on GC 9.4.3

For DPX mode, the number of memory partitions supported should be less
than or equal to 2.

Fixes: 1589c82 ("drm/amdgpu: Check memory ranges for valid xcp mode")
Signed-off-by: Lijo Lazar <[email protected]>
Reviewed-by: Hawking Zhang <[email protected]>
Signed-off-by: Alex Deucher <[email protected]>
(cherry picked from commit 990c4f5)
Cc: [email protected]

Author: Lijo Lazar

drivers/gpu/drm/amd/amdgpu/aqua_vanjaram.c

@@ -482,7 +482,7 @@ static bool __aqua_vanjaram_is_valid_mode(struct amdgpu_xcp_mgr *xcp_mgr,
 	case AMDGPU_SPX_PARTITION_MODE:
 		return adev->gmc.num_mem_partitions == 1 && num_xcc > 0;
 	case AMDGPU_DPX_PARTITION_MODE:
-		return adev->gmc.num_mem_partitions != 8 && (num_xcc % 4) == 0;
+		return adev->gmc.num_mem_partitions <= 2 && (num_xcc % 4) == 0;
 	case AMDGPU_TPX_PARTITION_MODE:
 		return (adev->gmc.num_mem_partitions == 1 ||
 			adev->gmc.num_mem_partitions == 3) &&