ZMII_FER_MDI
out_be32(&dev->base->fer, fer | ZMII_FER_MDI(input));
#define ZMII_FER_MDI_ALL (ZMII_FER_MDI(0) | ZMII_FER_MDI(1) | \
ZMII_FER_MDI(2) | ZMII_FER_MDI(3))