Kernel-4.18.0-80.el8_mpr121-touchkey

• Freescale MPR121 Controllor

Required Properties:

• compatible: Should be “fsl,mpr121-touchkey”
• reg: The I2C slave address of the device.
• interrupts: The interrupt number to the cpu.
• vdd-supply: Phandle to the Vdd power supply.
• linux,keycodes: Specifies an array of numeric keycode values to

        be used for reporting button presses. The array can
        contain up to 12 entries.
  

Optional Properties:

• wakeup-source: Use any event on keypad as wakeup event.
• autorepeat: Enable autorepeat feature.

Example:

#include “dt-bindings/input/input.h”

touchkey: mpr121@5a {
    compatible = "fsl,mpr121-touchkey";
    reg = <0x5a>;
    interrupt-parent = <&gpio1>;
    interrupts = <28 2>;
    autorepeat;
    vdd-supply = <&ldo4_reg>;
    linux,keycodes = <KEY_0>, <KEY_1>, <KEY_2>, <KEY_3>,
            <KEY_4> <KEY_5>, <KEY_6>, <KEY_7>,
            <KEY_8>, <KEY_9>, <KEY_A>, <KEY_B>;
};