SDHC_VOLTAGE_SUPP_3_0V
sc->sc.sc_caps = SDHC_VOLTAGE_SUPP_3_0V;
if (sc->sc.sc_caps & SDHC_VOLTAGE_SUPP_3_0V)
SDHC_READ(sc, SDHC_CAPABILITIES) | SDHC_VOLTAGE_SUPP_3_0V);
if (ISSET(caps, SDHC_VOLTAGE_SUPP_3_0V)) {