[Arria 10SX] Fail to load QSPI flash using quartus_hps

Hi,

Yes this is a custom board.

The quartus_hps commands in the document are the ones I am using.

It seems a solution to this is to reduce the JTAG clock speed using :

$ jtagconfig --setparam 1 JtagClock 12M

I could then run quartus_hps to program u-boot image in the Flash with no problem several times.

However it considerably slows down the programming.

Regarding jtagconfig command, I saw that setting the JtagClock to 12M actually results to a value of 6M (based on the output of a following "jtagconfig --getparam 1 JtagClock"). If I set the value to 6M, it is effectively set to 6M.

Is that a known problem? Please note that I use USB Blaster II with quartus 18.0.