diff --git a/Documentation/devicetree/bindings/watchdog/mtk-wdt.txt b/Documentation/devicetree/bindings/watchdog/mtk-wdt.txt
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index 0000000000000000000000000000000000000000..af9eb5b8a2534ab965d8a7843c3ecc1895af888b
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+++ b/Documentation/devicetree/bindings/watchdog/mtk-wdt.txt
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+Mediatek SoCs Watchdog timer
+
+Required properties:
+
+- compatible : should be "mediatek,mt6589-wdt"
+- reg : Specifies base physical address and size of the registers.
+
+Example:
+
+wdt: watchdog@010000000 {
+	compatible = "mediatek,mt6589-wdt";
+	reg = <0x10000000 0x18>;
+};