Elantech I2C Touchpad Required properties: - compatible: must be "elan,ekth3000". - reg: I2C address of the chip. - interrupts: interrupt to which the chip is connected (see interrupt binding[0]). Optional properties: - wakeup-source: touchpad 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]). - vcc-supply: a phandle for the regulator supplying 3.3V power. - elan,trackpoint: touchpad can support a trackpoint (boolean) - elan,clickpad: touchpad is a clickpad (the entire surface is a button) - elan,middle-button: touchpad has a physical middle button - elan,x_traces: number of antennas on the x axis - elan,y_traces: number of antennas on the y axis - some generic touchscreen properties [2]: * touchscreen-size-x * touchscreen-size-y * touchscreen-x-mm * touchscreen-y-mm [0]: Documentation/devicetree/bindings/interrupt-controller/interrupts.txt [1]: Documentation/devicetree/bindings/pinctrl/pinctrl-bindings.txt [2]: Documentation/devicetree/bindings/input/touchscreen/touchscreen.txt Example: &i2c1 { /* ... */ touchpad@15 { compatible = "elan,ekth3000"; reg = <0x15>; interrupt-parent = <&gpio4>; interrupts = <0x0 IRQ_TYPE_EDGE_FALLING>; wakeup-source; }; /* ... */ };