mmc_sd_switch
err = mmc_sd_switch(periph, ccb, SD_SWITCH_MODE_SET, SD_SWITCH_GROUP1, value, switch_res);
mmc_sd_switch(periph, start_ccb, SD_SWITCH_MODE_CHECK,
err = mmc_sd_switch(sc, SD_SWITCH_MODE_CHECK,
static int mmc_sd_switch(struct mmc_softc *sc, uint8_t mode, uint8_t grp,
err = mmc_sd_switch(sc, SD_SWITCH_MODE_SET, SD_SWITCH_GROUP1,