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diff --git a/Documentation/devicetree/bindings/input/elants_i2c.txt b/Documentation/devicetree/bindings/input/elants_i2c.txt
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+Elantech I2C Touchscreen
+
+Required properties:
+- compatible: must be "elan,ekth3500".
+- reg: I2C address of the chip.
+- interrupt-parent: a phandle for the interrupt controller (see interrupt
+  binding[0]).
+- interrupts: interrupt to which the chip is connected (see interrupt
+  binding[0]).
+
+Optional properties:
+- wakeup-source: touchscreen can be used as a wakeup source.
+- pinctrl-names: should be "default" (see pinctrl binding [1]).
+- pinctrl-0: a phandle pointing to the pin settings for the device (see
+  pinctrl binding [1]).
+
+[0]: Documentation/devicetree/bindings/interrupt-controller/interrupts.txt
+[1]: Documentation/devicetree/bindings/pinctrl/pinctrl-bindings.txt
+
+Example:
+        &i2c1 {
+                /* ... */
+
+                touchscreen@10 {
+                        compatible = "elan,ekth3500";
+                        reg = <0x10>;
+                        interrupt-parent = <&gpio4>;
+                        interrupts = <0x0 IRQ_TYPE_EDGE_FALLING>;
+                        wakeup-source;
+                };
+
+                /* ... */
+        };