No instance found - Stratix 10 GX L-tile dev board

Dear sstrell,

I checked the S10 on this dev board has this JTAGID(0xC32150DD), so I am not programming the wrong device. But actually, you remind me of checking the switches for configuration flow on our dev board, because the configuration chains are JTAG: PC->USB-PHY->MAX10->S10/MAX_V or FLASH, AvSTx32: MAX_V->S10.

The switches for config was set correctly. As a check, I toggled the switch and used JTAG to re-programmed MAX_V with the max5 sof from design reference, then the problem is solved. The strange thing is I have never tried to program MAX_V , because it can load factory firmware to S10 and let S10 display something on LCD screen, therefore I assume MAX_V works out-of-box. And, (JTAG) chain will not include MAX_V if I toggle the switch on MAX10 to only-select S10, but it turns out that MAX_V has been interfering with JTAG out-going signals going into MAX10 even if MAX_V was not selected, which explains that downloading configuration to S10 works fine, but not all JTAG communications is functional (only JTAG ID showed up, but not Device Name).

Now, I can access use all the JTAG services on S10 normally. Thanks for your suggestions.

Best,

Yifeng