PL01X_LCR_8BITS
SET(lcr, PL01X_LCR_8BITS);
bus_space_write_4(iot, ioh, plcom_lcr, PL01X_LCR_8BITS);
if (bus_space_read_4(iot, ioh, plcom_lcr) != PL01X_LCR_8BITS)