int mmc_switch_part(int dev_num, unsigned int part_num);
int mmc_hwpart_config(struct mmc *mmc, const struct mmc_hwpart_conf *conf,
enum mmc_hwpart_conf_mode mode);
int mmc_switch_part(int dev_num, unsigned int part_num);
int mmc_hwpart_config(struct mmc *mmc, const struct mmc_hwpart_conf *conf,
enum mmc_hwpart_conf_mode mode);