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David32's avatar
David32
Icon for Occasional Contributor rankOccasional Contributor
2 years ago
Solved

Arria 10 HPS EMIF DDR4 failing calibration

Hi, We are using Arria 10 SOC on a custom board. There is a single interface to DDR4 (component, 2 devices, each 16 bits). When doing normal EMIF the calibration succeeds and I can access memory t...
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  • David32's avatar
    David32
    1 year ago

    Hi Sho,

    I am sorry but I forgot to mark this thread as solved.

    We found it necessary to mark (within HPS configuration in QSYS) that FPGA boots from SD card.

    Thanks

    David

symmt_Intel's avatar
symmt_Intel
Icon for New Contributor rankNew Contributor
2 years ago

Hi David,


What do you mean by "doing normal EMIF"?

Did you mean that you referred to GHRD or something, copied the EMIF parameters and pasted them for your own project?


If you use different DDR4 memories, you need different calibration parameters for sure.


Best regards,

Sho Yamamoto


David32's avatar
David32
Icon for Occasional Contributor rankOccasional Contributor
2 years ago

Hi Sho

"Normal" means the instantiation of the (non HPS) EMIF IP within Platform Designer, since an IP also exists for instantiating EMIF to HPS.

These tests were on our custom board, where the "normal" or non-HPS EMIF controller seems to work OK with the DDR4, but the HPS EMIF controller fails on calibration.

David