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FabianL's avatar
FabianL
Icon for Occasional Contributor rankOccasional Contributor
1 year ago

Arria 10: Remote Update may brick FPGA and Factory Fallback won't work

Hello, we have observed some critical failures when doing tests with various potential error scenarios concerning a remote Update of the FPGA bitstream in the attached SPI Flash device. We could re...
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Farabi's avatar
Farabi
Icon for Regular Contributor rankRegular Contributor
7 months ago

Hello,


Thanks for your update. I am not sure what happened to your design, but few things to check below:


1- Can you make sure : RU_WATCHDOG_ENABLE = 1 is written before triggering reconfiguration, and make sure the setting is persist during configuration. Some reconfig reset settings.


2- Please make sure the watchdog timeout not too. eg. Dont set RU_WATCHDOG_TIMEOUT = 0xFFF (this is too long)


3- Please confirm the application image does not contain any logic that somehow triggers/modify RU_RESET_TIMER register.


regards,

Farabi