GPIO_PHCON
data = bus_space_read_4(sc->iot, sc->card_ioh, GPIO_PHCON);
bus_space_write_4(sc->iot, sc->card_ioh, GPIO_PHCON, data);
IOW(S3C2410_GPIO_BASE+GPIO_PHCON, _C(_,_,_,_,_,A,A,A,3,3,A,A,A,A,A,A));