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LP-AM243: USB DFU using SPI FLASH

Hang Yang
Intellectual 2126 points
Part Number: LP-AM243

Hi all,

My customer is using USB DFU and they want to use SPI for the external flash. The USB DFU tutorial is using OSPI, and the SBL image is named with OSPI as well. Will the process in the tutorial work for SPI as well?

Additionally, customer would like to use a different flash part than the one on LP, is there any requirement on this flash? How to change the settings of the sbl example image to adapt to this flash device?

Thanks,

Hang

  • 0
    TI__Genius 12571 points

    Hi,

    Please expect a delayed response since the experts are out of office because of holidays.

    Regards,

    Shaunak

  • 0
    TI__Mastermind 49255 points

    Hi Hang,

    The USB DFU example does use the OSPI flash for firmware update. It cannot be directly use for SPI flash which uses the McSPI interface instead of the OSPI flash interface, but the USB DFU part is the same (which get the updated boot image from USB host to the AM243x). The only difference is the how to write the boot image into the flash (McSPI vs. OSPI). Users should be able to modify the USB DFU for SPI flash on their own.

    Best regards,

    Ming

  • 0 in reply to Ming Wei
    TI__Intellectual 2126 points

    Hi Ming,

    Thanks for answering, Ming. How about QSPI then? Is it directly supported or needs modification? 

    Regards,

    Hang.

  • +1 in reply to Hang Yang
    TI__Mastermind 49255 points

    Hi Hang,

    Since OSPI is directly supported by the USB DFU, the changes to use the QSPI is very minimum. All you need to do is to change the number of data lines from 8 to 4. 

    Best regards,

    Ming