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UltraZed SOM issue

chasekim

Hello,

I have a problem for new purchased of UltraZed SOM about the MMC access error by FSBL and I2C-2 read error, seems to be slow booting time via EMMC.

We already verified all functions by SOM-1, but the SOM-2 continues to have problems.

  1. PS) Our build environment is Vivado 2022.1 and PetaLinux 2022.1 and Avnet release BPS.

 

SOM-1) Purchased few years ago Serial number

4000086

191

000010

SOM-2) New  Purchased serial number

DMS2351279-2508

US2SOM REV 3-02-05

Please let me know if you have any recommend this issue.

  • Any chance you can measure the eMMC clock? I would be curious to see between the two SOMs if the clock is changing frequency during the boot process. 

    as far as determining if there is a build difference between your boards, I would look closely at the eMMC devices on the two boards and check to see if those are different device somehow. Could be as time and device availability could result in changes.

    Typically, the factory programs QSPI and eMMC with Linux out of box image. Perhaps it would make sense to get that reprogrammed onto SOM and see how that functions.

  • in reply to iksevas

    Hello, iksevas,

    Can you please let me know you built in design file and BSP of the PetaLinux.

    I want to know the difference between the two hardware versions.

    As i know that two device is same FPGA core....

    Thanks,

  • in reply to chasekim

    The BSPs for various tools versions are posted on a Sharepoint site. 

    the code base used to generate those BSPs are on Avnet GITHUB.