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+Device tree bindings for Microchip CAP11xx based capacitive touch sensors
+
+The node for this device must be a child of a I2C controller node, as the
+device communication via I2C only.
+
+Required properties:
+
+ compatible: Must contain one of:
+ "microchip,cap1106"
+ "microchip,cap1126"
+ "microchip,cap1188"
+
+ reg: The I2C slave address of the device.
+
+ interrupts: Property describing the interrupt line the
+ device's ALERT#/CM_IRQ# pin is connected to.
+ The device only has one interrupt source.
+
+Optional properties:
+
+ autorepeat: Enables the Linux input system's autorepeat
+ feature on the input device.
+
+ microchip,sensor-gain: Defines the gain of the sensor circuitry. This
+ effectively controls the sensitivity, as a
+ smaller delta capacitance is required to
+ generate the same delta count values.
+ Valid values are 1, 2, 4, and 8.
+ By default, a gain of 1 is set.
+
+ microchip,irq-active-high: By default the interrupt pin is active low
+ open drain. This property allows using the active
+ high push-pull output.
+
+ linux,keycodes: Specifies an array of numeric keycode values to
+ be used for the channels. If this property is
+ omitted, KEY_A, KEY_B, etc are used as
+ defaults. The array must have exactly six
+ entries.
+
+Example:
+
+i2c_controller {
+ cap1106@28 {
+ compatible = "microchip,cap1106";
+ interrupt-parent = <&gpio1>;
+ interrupts = <0 0>;
+ reg = <0x28>;
+ autorepeat;
+ microchip,sensor-gain = <2>;
+
+ linux,keycodes = <103>, /* KEY_UP */
+ <106>, /* KEY_RIGHT */
+ <108>, /* KEY_DOWN */
+ <105>, /* KEY_LEFT */
+ <109>, /* KEY_PAGEDOWN */
+ <104>; /* KEY_PAGEUP */
+
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ usr@0 {
+ label = "cap11xx:green:usr0";
+ reg = <0>;
+ };
+
+ usr@1 {
+ label = "cap11xx:green:usr1";
+ reg = <1>;
+ };
+
+ alive@2 {
+ label = "cap11xx:green:alive";
+ reg = <2>;
+ linux,default_trigger = "heartbeat";
+ };
+ };
+}