n516 mmcinfo Device JZ_MMC Manufacturer ID 41 OEM 3432 Name SD1GB Tran

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n516 # mmcinfo
Device: JZ_MMC
Manufacturer ID: 41
OEM: 3432
Name: SD1GB
Tran Speed: 25000000
Rd Block Len: 512
SD version 2.0
High Capacity: No
Capacity: 962MiB
Bus Width: 4-bit
n516 # fatls mmc 0
Data transfer error: -19
block read failed: -19
No Fat FS detected