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Linux/DRA745: SD boot fail

Part Number: DRA745

Tool/software: Linux

DRA745 can't boot from SD Card,please help us and analyze why,the attach is the  wave picture , thank You!SD boot fail.rar

  • Hi,

    can you give some more details: what software you use? Is it a custom board or TIs EVM?

    Regards,
    Yordan
  • Yordan,

       It is customer's board, the SW they are using is PSDKLA3.02. I add some information here:

       1. For this board, after SD boot failed, it can boot from the Second device QSPI.

       2.  Here is the tracing register dump (0x4037f040~0x4037f060) from CCS after QSPI boot succeed

    1651 9 4037f040 0 10 0

    0010009F

    40001000

    00000820

    01000000

    00000000

    00000000

    00000000

    00000000

    00000001

    FFFFFFFF

    4037ED48

    2700010B

    43828081

    00000002

    4037F040

    4037F050

        Since the customer have others DRA745 board for other project can boot from SD card, we have measured the SD boot flow for comparing:

    Yordan,
    It is customer's board, the SW they are using is PSDKLA3.02. I add some debug information:
    1. For this board, after SD boot failed, it can boot from the Second device QSPI.
    2. Here is the tracing register dump (0x4037f040~0x4037f060) from CCS after QSPI boot succeed

    1651 9 4037f040 0 10 0
    0010009F
    40001000
    00000820
    01000000
    00000000
    00000000
    00000000
    00000000
    00000001
    FFFFFFFF
    4037ED48
    2700010B
    43828081
    00000002
    4037F040
    4037F050

    Since the customer have others DRA745 board for other project can boot from SD card, we have measured the SD boot flow for comparing:

    This is the SD boot failed board, no any CMD send out:

    This is the SD boot succeed board, we do not install a SD in it, just for testing, we found there is CMD send out. We believe it is CMD0&CMD8

    Would you suggest how to debug the issue?

    Best Regards.

      Marvin

  • Hi Marvin,
    Can you please send:
    1. sysboot pin configuration
    2. Schematic diagram related to:
    - SD card <-> SoC connections,
    - SD card power
    - vddshv8

    Your log tells that SD card boot was attempted but failed. Then, QSPI was successfull. QSPI however overwrote some fields of tracing registers. Can you please dump the registers again with sysboot pins set to SD-card-only boot (no other devices following SD card)?

    Regards,
    Stan