GPIO_GAFR1_U
bus_space_write_4(sc->sc_iot, pxa2x0_gpio_ioh, GPIO_GAFR1_U, sd.sd_gafr1_u);
sd.sd_gafr1_u = bus_space_read_4(sc->sc_iot, pxa2x0_gpio_ioh, GPIO_GAFR1_U);
reg = bus_space_read_4(iot, csc->saip.sc_gpioh, GPIO_GAFR1_U);
bus_space_write_4(iot, csc->saip.sc_gpioh, GPIO_GAFR1_U,