# The Mulle uses NVRAM to store persistent variables, such as boot count. CONFIG_MODULE_NVRAM=y CONFIG_MODULE_NVRAM_SPI=y CONFIG_MODULE_VFS=y CONFIG_MODULE_DEVFS=y CONFIG_MODULE_MTD=y CONFIG_MODULE_MTD_SPI_NOR=y # Mulle always uses the RTT for the oscillator CONFIG_MODULE_PERIPH_RTT=y