# XTAL setup CONFIG_SOC_ATMEL_SAMD_XOSC32K=y CONFIG_SOC_ATMEL_SAMD_XOSC32K_AS_MAIN=y # Bootloader Setup CONFIG_BUILD_OUTPUT_UF2=y CONFIG_BOOTLOADER_BOSSA=y CONFIG_BOOTLOADER_BOSSA_ADAFRUIT_UF2=y # ZMK USB Transport CONFIG_ZMK_USB=y