SDHC_FLAG_NO_HS_BIT
sc->sc.sc_flags |= SDHC_FLAG_NO_HS_BIT;
SDHC_FLAG_NO_HS_BIT;
SDHC_FLAG_NO_HS_BIT |
sc->sc.sc_flags |= SDHC_FLAG_NO_HS_BIT;
!ISSET(hp->sc->sc_flags, SDHC_FLAG_NO_HS_BIT))