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diff --git a/Documentation/devicetree/bindings/gpio/men-a021-wdt.txt b/Documentation/devicetree/bindings/gpio/men-a021-wdt.txt
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+Bindings for MEN A21 Watchdog device connected to GPIO lines
+
+Required properties:
+- compatible: "men,a021-wdt"
+- gpios: Specifies the pins that control the Watchdog, order:
+  1: Watchdog enable
+  2: Watchdog fast-mode
+  3: Watchdog trigger
+  4: Watchdog reset cause bit 0
+  5: Watchdog reset cause bit 1
+  6: Watchdog reset cause bit 2
+
+Optional properties:
+- None
+
+Example:
+        watchdog {
+                compatible ="men,a021-wdt";
+                gpios = <&gpio3 9  1    /* WD_EN */
+                         &gpio3 10 1    /* WD_FAST */
+                         &gpio3 11 1    /* WD_TRIG */
+                         &gpio3 6  1    /* RST_CAUSE[0] */
+                         &gpio3 7  1    /* RST_CAUSE[1] */
+                         &gpio3 8  1>;  /* RST_CAUSE[2] */
+        };