qmk_firmware/keyboards/keebio/levinson/rev3/info.json

{
    "keyboard_name": "Levinson Rev. 3",
    "split": {
        "soft_serial_pin": "D0"
    },
    "usb": {
        "pid": "0x3146",
        "device_version": "3.0.0"
    },
    "backlight": {
        "pin": "B6",
        "levels": 7
    }
}