Latest hardware rev of the Pi 3 Model A+ is not yet supported. Please add the following to rpihw.c
, { .hwver = 0x9020e1, .type = RPI_HWVER_TYPE_PI2, .periph_base = PERIPH_BASE_RPI2, .videocore_base = VIDEOCORE_BASE_RPI2, .desc = "Pi 3 Model A Plus Rev 1.1", }