PHYREG32
bus_write_4(sc->mem, PHYREG32,
(bus_read_4(sc->mem, PHYREG32) & PHYREG32_SSC_MASK) |
bus_write_4(sc->mem, PHYREG32,
(bus_read_4(sc->mem, PHYREG32) & PHYREG32_SSC_MASK) |
bus_write_4(sc->mem, PHYREG32,
(bus_read_4(sc->mem, PHYREG32) & ~0x000000f0) |