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qwitza's avatar
qwitza
Icon for Occasional Contributor rankOccasional Contributor
22 days ago

SDRAM calibration failed.

Hello, after Enpirion stopped selling some of the parts we used on our board, we had to redesign it. We assembled ten boards, and on two of them, I’m now getting an SDRAM calibration error in U-Boot...
Arm Processor
General
Hps Boot
SueC_Altera's avatar
SueC_Altera
Icon for Contributor rankContributor
22 days ago

Hi qwitza​,

What device are you using?  What versions of Quartus and Uboot are you using?

Thanks,

Sue

qwitza's avatar
qwitza
Icon for Occasional Contributor rankOccasional Contributor
22 days ago

Hello,
sorry for the missing information.
Device: Cyclone V
Quartus: 21.1 / 24.1
u-boot: v2020.01

  • Archer_Altera's avatar
    Archer_Altera
    Icon for Occasional Contributor rankOccasional Contributor
    21 days ago

    Hi @qwita,

    Is it convenient for your design to upgrade uboot version to 2024.07 or later? This will be helpful for me to investigate this case and support you. It will be benefit for you to get support in later development process.

    If it is not convenient, I will try to help you with uboot 2020.01 version. 

    For both ways, please give me some time to run on hardware to find the correct method.

    By the way, latest uboot, linux guidance document for cyclone V device is posted on link below.

    https://altera-fpga.github.io/rel-25.1.1/embedded-designs/cyclone-v/sx/soc/boot-examples/ug-linux-boot-cve-soc/

    Regards,

    Archer_Altera