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diff --git a/Documentation/devicetree/bindings/mtd/spear_smi.txt b/Documentation/devicetree/bindings/mtd/spear_smi.txt
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+* SPEAr SMI
+
+Required properties:
+- compatible : "st,spear600-smi"
+- reg : Address range of the mtd chip
+- #address-cells, #size-cells : Must be present if the device has sub-nodes
+  representing partitions.
+- interrupt-parent: Should be the phandle for the interrupt controller
+  that services interrupts for this device
+- interrupts: Should contain the STMMAC interrupts
+- clock-rate : Functional clock rate of SMI in Hz
+
+Optional properties:
+- st,smi-fast-mode : Flash supports read in fast mode
+
+Example:
+
+        smi: flash@fc000000 {
+                compatible = "st,spear600-smi";
+                #address-cells = <1>;
+                #size-cells = <1>;
+                reg = <0xfc000000 0x1000>;
+                interrupt-parent = <&vic1>;
+                interrupts = <12>;
+                clock-rate = <50000000>;        /* 50MHz */
+
+                flash@f8000000 {
+                        st,smi-fast-mode;
+                        ...
+                };
+        };