+- clocks : Iommu share clocks with master, to make map buffer success
+ when master disable clocks, iommu should control related
+ clocks itself
+- clock-names : Iommu related clock name, it should be "aclk" and "hclk" on
+ RK3399 SoC platform
+- power-domains : Iommu share power-domains with master, it have the same purpose
+ with the clocks