IMX_UFCR
ufcr |= bus_space_read_4(iot, ioh, IMX_UFCR) & IMX_UFCR_DCEDTE;
bus_space_write_4(iot, ioh, IMX_UFCR, ufcr);
ufcr = bus_space_read_4(regsp->ur_iot, regsp->ur_ioh, IMX_UFCR);
bus_space_write_4(regsp->ur_iot, regsp->ur_ioh, IMX_UFCR, ufcr);