diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c
index df5031357244..cfbcce9c27c5 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c
@@ -1835,7 +1835,13 @@ static int amdgpu_ttm_reserve_tmr(struct amdgpu_device *adev)
 	     amdgpu_ip_version(adev, GC_HWIP, 0) == IP_VERSION(9, 4, 4) ||
 	     amdgpu_ip_version(adev, GC_HWIP, 0) == IP_VERSION(9, 5, 0)))
 		reserve_size = max(reserve_size, (uint32_t)280 << 20);
-	else if (!reserve_size)
+	else if (!adev->bios && 
+		 amdgpu_ip_version(adev, GC_HWIP, 0) == IP_VERSION(12, 1, 0)) {
+		if (hweight32(adev->aid_mask) == 1)
+			reserve_size = max(reserve_size, (uint32_t)128 << 20);
+		else
+			reserve_size = max(reserve_size, (uint32_t)144 << 20);
+	} else if (!reserve_size)
 		reserve_size = DISCOVERY_TMR_OFFSET;
 
 	if (mem_train_support) {