How to implement remoteproc on i.MX93 (A55 running Linux controlling Cortex-M33)?

[Manjunathb]

Hello NXP Community,

I am working on i.MX93 and want to enable remoteproc so that the Cortex-A55 core (running Linux) can control and communicate with the Cortex-M33 core.

I have a few doubts and would like step-by-step clarification:

1. What are the initial steps required to enable and configure remoteproc on i.MX93?

   • Do I need to modify the device tree in Linux for the M33 core?

   • Which kernel configurations must be enabled for remoteproc/rpmsg support?

2. On the M33 side, do I need to build the FreeRTOS SDK example (like the multicore demo) and load it through remoteproc?

   • If I run the multicore demo example, can I use that to test whether remoteproc is working correctly?

3. How do I load the M33 firmware from the A55 core using Linux remoteproc?

   • Where should the firmware binary be placed in the root filesystem (/lib/firmware/)?

   • What changes are required in the DTS to bind the firmware to remoteproc?

4. Once remoteproc is working, how do I verify communication between A55 and M33 using rpmsg?

   • Is there a test application in the Linux BSP for this?

5. Are there any NXP reference guides, example projects, or documentation specific to remoteproc/rpmsg on i.MX93?

Any guidance, documentation links, or step-by-step instructions would be very helpful.

Thanks,
Manjunath

i.MX93 i.MX93EVK 

[danielchen]

Hi @Manjunathb :

I would suggest you refer to AN5317.  In chapter 9,  the Linux rproc framework and i.MX Linux rproc support are described.

AN5317: Loading Code on Cortex-M from U-Boot/Linux for the i.MX Asymmetric Multi-Processing Applicat...

Regards

Daniel