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diff --git a/Documentation/devicetree/bindings/iommu/ti,omap-iommu.txt b/Documentation/devicetree/bindings/iommu/ti,omap-iommu.txt
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+OMAP2+ IOMMU
+
+Required properties:
+- compatible : Should be one of,
+                "ti,omap2-iommu" for OMAP2/OMAP3 IOMMU instances
+                "ti,omap4-iommu" for OMAP4/OMAP5 IOMMU instances
+                "ti,dra7-iommu" for DRA7xx IOMMU instances
+- ti,hwmods  : Name of the hwmod associated with the IOMMU instance
+- reg        : Address space for the configuration registers
+- interrupts : Interrupt specifier for the IOMMU instance
+
+Optional properties:
+- ti,#tlb-entries : Number of entries in the translation look-aside buffer.
+                    Should be either 8 or 32 (default: 32)
+- ti,iommu-bus-err-back : Indicates the IOMMU instance supports throwing
+                          back a bus error response on MMU faults.
+
+Example:
+        /* OMAP3 ISP MMU */
+        mmu_isp: mmu@480bd400 {
+                compatible = "ti,omap2-iommu";
+                reg = <0x480bd400 0x80>;
+                interrupts = <24>;
+                ti,hwmods = "mmu_isp";
+                ti,#tlb-entries = <8>;
+        };