The uboot load successful. When load kernel, the file system, dtb file, kernel all load correcy, the peripheral inistal success, but the kernel can not enter to shell, the last log is " ttyS0 - failed to request DMA", and the nRST pin output a low pulse.
Do you know, what is the reason about this low pulse on nRST Pin?
Firstly, may I know which Quartus version you are working on? Are you using our GHRD image for testing or your own design?
If you are using your own deisgn, in Quartus/Platform designer, do you see any error reported?
The Quartus version is 18.1 Pro. There is no other peripheral in qsys sytem, just have the EMIF configuration, UART, QSPI Flash and EMAC.
There is also no error in error report.
I can attach my Quartus Project for you reference.
This kernel is old, have you try newer version of kernel to see if this improves the issue? Latest available version can be found here:
Can you share your boot logs with the kernel logs as well?