new_kbd/app.overlay

#include <zephyr/dt-bindings/gpio/gpio.h>

/ {
    chosen {
        zephyr,boot-mode = &boot_mode0;
    };

    hid_dev_0: hid_dev_0 {
        compatible = "zephyr,hid-device";
        label = "HID_BOOT";
        protocol-code = "keyboard";
        in-report-size = <8>;
        in-polling-period-us = <1000>;
        out-report-size = <8>;
        out-polling-period-us = <1000>;
    };

    hid_dev_1: hid_dev_1 {
        compatible = "zephyr,hid-device";
        label = "HID_NKRO";
        protocol-code = "none";
        in-report-size = <31>;
        in-polling-period-us = <1000>;
        out-report-size = <31>;
        out-polling-period-us = <1000>;
    };

    raw_hid: hid_dev_2 {
        compatible = "zephyr,hid-device";
        label = "HID_RAW";
        protocol-code = "none";
        in-report-size = <64>;
        in-polling-period-us = <1000>;
        out-report-size = <64>;
        out-polling-period-us = <1000>;
    };
};

&gpregret1 {
    status = "okay";

    boot_mode0: boot_mode@0 {
        compatible = "zephyr,retention";
        status = "okay";
        reg = <0x0 0x1>;
    };
};