[PATCH v4] SDRAM Calibration Failed fix for GEN5 SoCFPGA

Ralph Siemsen ralph.siemsen at linaro.org
Wed Dec 3 21:52:37 CET 2025


Hi Brian,

On Wed, Dec 3, 2025 at 1:17 PM Sune Brian <briansune at gmail.com> wrote:

> But did you disable also all "CYCLIC" as well?

I have "CONFIG_CYCLIC is not set" which disables all the others.

I also have another patch to disable the watchdog, adapted from [1].
This didn't seem to make any difference (but my ram calibration
doesn't take very long).

[1]  https://lore.kernel.org/all/20250603115442.19971-8-nareshkumar.ravulapalli@altera.com/

> 3) I use socfpga_cyclone5_defconfig and only change minimum settings
> that I needs.
> From this issue mentioned to current day.

Then it sounds like it is a recent issue... hmm... I'm currently on
2025.10 release version (plus some cherry-picks). I'll give a try on
master/next once I get some other things stabilised...

Regards,
Ralph


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