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IWR6843AOP: Does RBL support single/dual SPI flash boot?

Chris Meng
Mastermind 37826 points
Part Number: IWR6843AOP
Other Parts Discussed in Thread: IWR6843

Hi,

My customer tried to use mx25v1606fm2103 (Multi I/O Support - Single I/O and Dual I/O) with IWR6843AOP, but failed. The R4F PC stopped at 0x000118A4. What does this mean?

They change the flash to a quad mode qspi flash then their board can boot ok.

I found below info in IWR6843 Bootloader Flow(SWRA627) , but there is no more info about if the highest mode is dual mode, how the RBL will do.

Would you pls kindly advise if IWR6843AOP RBL supports single/dual SPI flash boot or not?

Thanks,

Chris

  • TI__Mastermind 21071 points

    Hi Chris,

    Please see this app note for additional documentation on supported flash variants.

    I believe quad mode might be the only supported option. Let me check internally to confirm this with the RBL team. Please note, due to the upcoming holidays much of the mmWave support team is out of office. As such responses may be delayed until the beginning of January.

    Best Regards,

    Josh

  • in reply to Josh Dye
    TI__Mastermind 37826 points

    Josh,

    Any update?

    Thanks,

    Chris

  • in reply to Chris Meng
    TI__Mastermind 21071 points

    Hi Chris, 

    I apologize for the delay here. I haven't yet received confirmation internally. I'm pinging the discussion again since most people are back in the office now so I will try to get an answer on this. 

    Best Regards,

    Josh

  • in reply to Josh Dye
    TI__Mastermind 37826 points

    Josh,

    I am still waiting for feedback. Any news?

    Thanks,

    Chris

  • in reply to Chris Meng
    TI__Mastermind 21071 points

    Hi Chris, 

    I'm very sorry about the delay here. I do have some information to share with you. 

    1. The bootloader determines the QSPI mode from the SFDP header with the following priority: QUAD > DUAL > SINGLE
    2. In case boot fails based on the mode identified in #1. The bootloader attempts to boot using single mode.

    Hence, from my understanding the customer should be able to boot even if he is using a flash that only support dual/single QSPI mode.

    Do we know the reason for this evaluation? The dual/single SPI mode would lead to longer boot times, Is that acceptable?

    Can the customer check the response of the SFDP command? This would be used to determine the course of action in the boot loader and an important data point.

    Best Regards,

    Josh