--- zzzz-none-000/linux-4.4.60/Documentation/devicetree/bindings/iommu/arm,smmu.txt	2017-04-08 07:53:53.000000000 +0000
+++ scorpion-7490-727/linux-4.4.60/Documentation/devicetree/bindings/iommu/arm,smmu.txt	2021-02-04 17:41:59.000000000 +0000
@@ -16,6 +16,7 @@
                         "arm,mmu-400"
                         "arm,mmu-401"
                         "arm,mmu-500"
+                        "cavium,smmu-v2"
 
                   depending on the particular implementation and/or the
                   version of the architecture implemented.