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diff --git a/Documentation/devicetree/bindings/rtc/isil,isl1219.txt b/Documentation/devicetree/bindings/rtc/isil,isl1219.txt
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+Intersil ISL1219 I2C RTC/Alarm chip with event in
+
+ISL1219 has additional pins EVIN and #EVDET for tamper detection.
+
+Required properties supported by the device:
+
+ - "compatible": must be "isil,isl1219"
+ - "reg": I2C bus address of the device
+
+Optional properties:
+
+ - "interrupt-names": list which may contains "irq" and "evdet"
+ - "interrupts": list of interrupts for "irq" and "evdet"
+ - "isil,ev-evienb": if present EV.EVIENB bit is set to the specified
+                     value for proper operation.
+
+
+Example isl1219 node with #IRQ pin connected to SoC gpio1 pin12
+ and #EVDET pin connected to SoC gpio2 pin 24:
+
+        isl1219: rtc@68 {
+                compatible = "isil,isl1219";
+                reg = <0x68>;
+                interrupt-names = "irq", "evdet";
+                interrupts-extended = <&gpio1 12 IRQ_TYPE_EDGE_FALLING>,
+                        <&gpio2 24 IRQ_TYPE_EDGE_FALLING>;
+                isil,ev-evienb = <1>;
+        };
+