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diff --git a/Documentation/devicetree/bindings/arm/hisilicon/hisilicon.txt b/Documentation/devicetree/bindings/arm/hisilicon/hisilicon.txt
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+Hisilicon Platforms Device Tree Bindings
+----------------------------------------------------
+
+Hi4511 Board
+Required root node properties:
+        - compatible = "hisilicon,hi3620-hi4511";
+
+Hisilicon system controller
+
+Required properties:
+- compatible : "hisilicon,sysctrl"
+- reg : Register address and size
+
+Optional properties:
+- smp-offset : offset in sysctrl for notifying slave cpu booting
+                cpu 1, reg;
+                cpu 2, reg + 0x4;
+                cpu 3, reg + 0x8;
+                If reg value is not zero, cpun exit wfi and go
+- resume-offset : offset in sysctrl for notifying cpu0 when resume
+- reboot-offset : offset in sysctrl for system reboot
+
+Example:
+
+        /* for Hi3620 */
+        sysctrl: system-controller@fc802000 {
+                compatible = "hisilicon,sysctrl";
+                reg = <0xfc802000 0x1000>;
+                smp-offset = <0x31c>;
+                resume-offset = <0x308>;
+                reboot-offset = <0x4>;
+        };