xeno_can_mem (and other driver) IRQ issues with Zynq UltraScale

Josh Karch jkarch at FirstMode.com
Wed Jul 1 17:15:20 CEST 2020


I just wanted to give a quick update on the xeno_can_mem issues.  It appears for the Zynq UltraScale+ MPSoC that in order to register IRQs for use by Xenomai Drivers you first need to create a "generic-uio" entry in the device tree pointing to the device's PL (programmable logic) interrupt.  This will reserve the IRQ in Linux based on the mapping from whatever interrupt controller is being used.  At that point you can then modprobe the Xenomai driver.  I was receiving faults trying to directly register the interrupt line (#121 for example).


Josh Karch

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