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diff --git a/Documentation/devicetree/bindings/serio/ps2-gpio.txt b/Documentation/devicetree/bindings/serio/ps2-gpio.txt
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+Device-Tree binding for ps/2 gpio device
+
+Required properties:
+ - compatible = "ps2-gpio"
+ - data-gpios: the data pin
+ - clk-gpios: the clock pin
+ - interrupts: Should trigger on the falling edge of the clock line.
+
+Optional properties:
+ - write-enable: Indicates whether write function is provided
+ to serio device. Possibly providing the write fn will not work, because
+ of the tough timing requirements.
+
+Example nodes:
+
+ps2@0 {
+ compatible = "ps2-gpio";
+ interrupt-parent = <&gpio>;
+ interrupts = <23 IRQ_TYPE_EDGE_FALLING>;
+ data-gpios = <&gpio 24 GPIO_ACTIVE_HIGH>;
+ clk-gpios = <&gpio 23 GPIO_ACTIVE_HIGH>;
+ write-enable;
+};