Hi,

Current U-Boot repo supports eMMC erase command with argument 0x00000000 (MMC_ERASE_ARG).

https://github.com/u-boot/u-boot/blob/master/drivers/mmc/mmc_write.c#L53

cmd.cmdidx = MMC_CMD_ERASE;

cmd.cmdarg = MMC_ERASE_ARG;

cmd.resp_type = MMC_RSP_R1b;

Argument 0x80000000 (MMC_SECURE_ERASE_ARG) is also defined but is not used in any function.

Latest eMMC 5.1 devices support a few more data wipe and reorder features e.g. Trim, Discard and Sanitize. Is there any plan to add these features?

Thanks,

Ismael.