A BeagleBone image update breaks a PRU example: what should be compared first?

Started by alaasharaf 27 Sep 2026BeagleBone software imagePRU migrationdevice treekernel driversreproducible setup

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Latest activity · 27 Sep 2026

A BeagleBone image update breaks a PRU example: what should be compared first?

alaasharaf 27 Sep 2026 BeagleBone / BeagleBoard Forum

An older PRU example no longer starts after a BeagleBone software-image update. How can differences in loading method, device tree and toolchain be separated from a change in the PRU program itself?

Reference: BeagleBoard: real-time I/O cookbook (https://docs.beagleboard.org/books/beaglebone-cookbook/08realtime/realtime.html).

Reference: Linux kernel: remote processor framework (https://docs.kernel.org/staging/remoteproc.html).

Community replies 3

Re: A BeagleBone image update breaks a PRU example: what should be compared first?

27 Sep 2026 #2

Record the board, image, kernel, PRU toolchain and example revision. Check which PRU management method the current image supports. Instructions written for an older interface should not be mixed with a newer remoteproc setup without understanding the required changes.

Re: A BeagleBone image update breaks a PRU example: what should be compared first?

27 Sep 2026 #3

Compare enabled device-tree settings, firmware paths and any resource table expected by the loading framework. Review kernel logs and the remote-processor state. Start with a current minimal example for that image before porting the older application's communication layer.

Re: A BeagleBone image update breaks a PRU example: what should be compared first?

27 Sep 2026 #4

Preserve the previous working image and document the successful new setup. Test pin behavior and Linux-to-PRU communication after migration, including stop and restart. An image that boots Linux successfully has not yet demonstrated compatibility with the application's real-time subsystem.