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qwitza's avatar
qwitza
Icon for Occasional Contributor rankOccasional Contributor
9 months 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
qwitza's avatar
qwitza
Icon for Occasional Contributor rankOccasional Contributor
9 months ago

Hello,
for testing purposes, I used the quick method and selected the socfpga_cyclone5_defconfig. Before that, I included our QTS files using the Python script. The result:

U-Boot SPL 2025.07-g35abb4f1cedc-dirty (Nov 11 2025 - 07:52:35 +0100)
SDRAM calibration failed.
### ERROR ### Please RESET the board ###

But still no debug information :-(