XUSB_PADCTL_SS_PORT_MAP_REG
val = bus_space_read_4(sc->sc_bst, sc->sc_bsh, XUSB_PADCTL_SS_PORT_MAP_REG);
bus_space_write_4(sc->sc_bst, sc->sc_bsh, XUSB_PADCTL_SS_PORT_MAP_REG, (2<<0)|(7<<4));
val = bus_space_read_4(sc->sc_bst, sc->sc_bsh, XUSB_PADCTL_SS_PORT_MAP_REG);