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DRA821U: EMMC startup issue

Cherry Zhou
Mastermind 22235 points
Part Number: DRA821U
Other Parts Discussed in Thread: DRA821, CSD

Hi team,

The following issues were observed during patches after EMMC burning:

1) The bin file with uboot cannot be started when finished burning. While the bin file can be started when importing mmcblk0boot0 with dd command.

2) "MMC partconf 0 1 1 1 1 1;MMC bootbus 0 2 0" entering uboot using SD boot mode, this command enables the unbootable hardware to boot.

"MMC partconf 0 1 1 1 1; MMC bootbus 0 2 0 0"

The customer would like to know if this command read or write to some EEPROM registers of DRA821 or EMMC. Could you help check this case? Thanks.

Best Regards,

Cherry

  • 0
    TI__Guru*** 130990 points

    Hi Cherry,

    Can you give some details on the above issue:

    Cherry Zhou said:

    The customer would like to know if this command read or write to some EEPROM registers of DRA821 or EMMC. Could you help check this case? Thanks.

    The above command sets up the EXT_CSD register of eMMC flash and enables boot from boot0 partition.

    - Keerthy