DWC3_GUSB3PIPECTL
val = bus_space_read_4(sc->sc_iot, ioh, DWC3_GUSB3PIPECTL(0));
bus_space_write_4(sc->sc_iot, ioh, DWC3_GUSB3PIPECTL(0), val);
SET4(sc, DWC3_GUSB3PIPECTL(0), GUSB3PIPECTL_PHYSOFTRST);
CLR4(sc, DWC3_GUSB3PIPECTL(0), GUSB3PIPECTL_PHYSOFTRST);
val = RD4(sc, DWC3_GUSB3PIPECTL(0));
WR4(sc, DWC3_GUSB3PIPECTL(0), val);