SDHC_CLOCK_CTL
reg = bus_space_read_2(sc->sc_iot, sc->sc_ioh, SDHC_CLOCK_CTL);
bus_space_write_2(sc->sc_iot, sc->sc_ioh, SDHC_CLOCK_CTL, reg);
reg = bus_space_read_2(sc->sc_iot, sc->sc_ioh, SDHC_CLOCK_CTL);
bus_space_write_2(sc->sc_iot, sc->sc_ioh, SDHC_CLOCK_CTL, reg);
sdhc_write_2(sc->sc.sc_host[0], SDHC_CLOCK_CTL, 0);
HWRITE2(hp, SDHC_CLOCK_CTL, 0);
HWRITE2(hp, SDHC_CLOCK_CTL, sdclk);
HSET2(hp, SDHC_CLOCK_CTL, SDHC_INTCLK_ENABLE);
if (ISSET(HREAD2(hp, SDHC_CLOCK_CTL), SDHC_INTCLK_STABLE))
HSET2(hp, SDHC_CLOCK_CTL, SDHC_SDCLK_ENABLE);