PS711X_UBRLCR
*(volatile uint32_t *)(clpscom_cnaddr + PS711X_UBRLCR) =
bus_space_read_4((sc)->sc_iot, (sc)->sc_ioh, PS711X_UBRLCR)
bus_space_write_4((sc)->sc_iot, (sc)->sc_ioh, PS711X_UBRLCR, (val))