sdmmc_chip_bus_clock
error = sdmmc_chip_bus_clock(sc->sct, sc->sch,
(void)sdmmc_chip_bus_clock(sc->sct, sc->sch,
(void)sdmmc_chip_bus_clock(sc->sct, sc->sch,
(void)sdmmc_chip_bus_clock(sc->sct, sc->sch,
error = sdmmc_chip_bus_clock(sc->sct, sc->sch, speed, timing);
error = sdmmc_chip_bus_clock(sc->sct, sc->sch, 0, SDMMC_TIMING_LEGACY);
error = sdmmc_chip_bus_clock(sc->sct, sc->sch, SDMMC_SDCLK_25MHZ,
error = sdmmc_chip_bus_clock(sc->sct, sc->sch, SDMMC_SDCLK_25MHZ,
error = sdmmc_chip_bus_clock(sc->sct, sc->sch,
error = sdmmc_chip_bus_clock(sc->sct, sc->sch, speed, timing);
error = sdmmc_chip_bus_clock(sc->sct, sc->sch, speed, SDMMC_TIMING_HIGHSPEED);