Kernel-4.18.0-80.el8_elan_i2c

Elantech I2C Touchpad

Required properties:

• compatible: must be “elan,ekth3000”.
• reg: I2C address of the chip.
• interrupt-parent: a phandle for the interrupt controller (see interrupt
  binding0).
• interrupts: interrupt to which the chip is connected (see interrupt
  binding0).

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)

Example:
&i2c1 {
/* … */

    touchpad@15 {
        compatible = "elan,ekth3000";
        reg = <0x15>;
        interrupt-parent = <&gpio4>;
        interrupts = <0x0 IRQ_TYPE_EDGE_FALLING>;
        wakeup-source;
    };

    /* ... */
};