GP1
bus_space_write_1(sc->sc_bst, sc->sc_bsh, sc->sc_offset + GP1, 0);
bus_space_write_1(bst, bsh, offset + GP1, 0);
bus_space_write_1(bst, bsh, offset + GP1, POWER_UP);
bus_space_write_1(bst, bsh, offset + GP1, POWER_UP | 4);