Kernel-4.18.0-80.el8_cypress,cyapa

Cypress I2C Touchpad

Required properties:

• compatible: must be “cypress,cyapa”.
• 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.

Example:
&i2c0 {
/* … */

    /* Cypress Gen3 touchpad */
    touchpad@67 {
        compatible = "cypress,cyapa";
        reg = <0x67>;
        interrupt-parent = <&gpio>;
        interrupts = <2 IRQ_TYPE_EDGE_FALLING>;    /* GPIO 2 */
        wakeup-source;
    };

    /* Cypress Gen5 and later touchpad */
    touchpad@24 {
        compatible = "cypress,cyapa";
        reg = <0x24>;
        interrupt-parent = <&gpio>;
        interrupts = <2 IRQ_TYPE_EDGE_FALLING>;    /* GPIO 2 */
        wakeup-source;
    };

    /* ... */
};