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swm's avatar
swm
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3 years ago

How to reliabily program multiple FPGAs using quartus_pgm?

I have a server with 8 x Stratix 10 SX boards (Terasic DE10Pro), which I would like to be able to program over usb-to-jtag. When I have one or two baords installed, I can reliably program a board, e...
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    swm
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    3 years ago

    Hello Fakhrul,

    Thanks for investigating.

    The JTAG Multi-Device Configuration documentation appears to only cover multiple FPGAs on the same JTAG chain. For my setup I have a USB-to-JTAG adapter per FPGA (on the Terasic DE10Pro board) rather than chaining many FPGAs on the same JTAG chain. Simularly for Debugging Suggestions the bug isn't with multiple FPGAs on the same JTAG chain.

    I'm pretty certain the bug is in software, most likely in the jtagd demon but possibly in quartus_pgm.

    I have the eight FPGAs connected via two 4-port USB hubs that have per-port controllable power on/off. If I use uhubctl (under Linux) to turn off all ports exept for one FPGA and restart jtagd so that rescans USB ports, then I'm able to program that one FPGA reliably. If I enable any two FPGAs, then I'm able to program them. But if I enable all eight FPGAs the programming usually fails.

    - Simon