CLK_SDONLY
sc->sc_clkstate = CLK_SDONLY;
bwfm_sdio_clkctl(sc, CLK_SDONLY, 0);
sc->sc_clkstate = CLK_SDONLY;
case CLK_SDONLY:
sc->sc_clkstate = CLK_SDONLY;
sc->sc_clkstate = CLK_SDONLY;
sc->sc_clkstate = CLK_SDONLY;