ANXDP_DEBUG_CTL
if ((bus_space_read_4(sc->sc_bst, sc->sc_bsh, ANXDP_DEBUG_CTL) &
val = bus_space_read_4(sc->sc_bst, sc->sc_bsh, ANXDP_DEBUG_CTL);
bus_space_write_4(sc->sc_bst, sc->sc_bsh, ANXDP_DEBUG_CTL, val);