mmc_set_clock
void mmc_set_clock(struct mmc_host *host, unsigned int hz);
mmc_set_clock(host, (unsigned int) val);
mmc_set_clock(card->host, max_dtr);
mmc_set_clock(host, max_dtr);
mmc_set_clock(host, max_dtr);
mmc_set_clock(card->host, card->ext_csd.hs_max_dtr);
mmc_set_clock(host, old_clock);
mmc_set_clock(host, host->f_init);
mmc_set_clock(host, mmc_sd_get_max_clock(card));
mmc_set_clock(card->host, card->sw_caps.uhs_max_dtr);
mmc_set_clock(host, host->f_init);
mmc_set_clock(card->host, max_rate);
mmc_set_clock(host, card->cis.max_dtr);
mmc_set_clock(host, mmc_sdio_get_max_clock(card));