qmk-firmware/keyboards/tronguylabs/m122_3270/teensy/info.json

{
    "usb": {
        "device_version": "0.0.1"
    },
    "matrix_pins": {
        "cols": ["B5", "B6", "B7", "D0", "D1", "D2", "D3", "D4", "D5", "D7", "E0", "E1", "C0", "C1", "C2", "C3", "C4", "C5", "C6", "C7"],
        "rows": ["F0", "F1", "F2", "F3", "F4", "F5", "F6", "F7"]
    },
    "diode_direction": "ROW2COL",
    "processor": "at90usb1286",
    "bootloader": "halfkay"
}