1、mmc
STM32MP> mmc dev 0
switch to partitions #0, OK
mmc0 is current device
STM32MP> mmc list
STM32 SDMMC2: 0 (SD)
STM32 SDMMC2: 1
STM32MP> mmc info
Device: STM32 SDMMC2
Manufacturer ID: 9f
OEM: 5449
Name: SD32G
Bus Speed: 50000000
Mode : SD High Speed (50MHz)
Rd Block Len: 512
SD version 3.0
High Capacity: Yes
Capacity: 29.1 GiB
Bus Width: 4-bit
Erase Group Size: 512 Bytes
STM32MP>fatls mmc 0:1 / #列出第一个sd卡第一个分区中的文件：