Hello,

I am working on an update script for my device, and the script is supposed to download a new image and write it to the memory card. I plan to download a new image by TFTP, and then use "mmc write" command in uboot to overwrite the content of my Linux root partition.

The question is what memory cards are supported by "mmc write"?

My card is "SD version 3.0", and "mmc write" hangs and runs forever, even for 1 block: ---

setexpr fs ${fileaddr} + 1A00000 mmc write ${fs} D000 1

MMC write: dev #0, block # 53248, count 1 ... --- and it never ends. The block # looks correct, it is the first block of the partition I want to write to.

Anybody knows what kind of cards are supported by "mmc write"? Is there any documentation I can study?

Thanks, Andrey