topic Re: RPMsg support for m33 core on i.mx93 in Zephyr Project

RPMsg support for m33 core on i.mx93

Louis-HQ — Tue, 28 Jan 2025 16:00:45 GMT

Hi,

As of now, I don't believe that the i.mx93 zephyr port provides facilities to implement messaging between the m33 core running zephyr and the A55 cores running Linux using a framework such as RPMsg. The device tree exposes a DTCM which could be used as a internal shared memory, but no internal interrupt mechanism between the cores as far as I can see.

Is there something on the roadmap to improve support of zephyr development on the m33 core?

Thanks.

Re: RPMsg support for m33 core on i.mx93

Manuel_Salas — Tue, 28 Jan 2025 18:52:57 GMT

Hello @Louis-HQ

I hope you are doing very well.

At this date (January of 2025), Zephyr is just as it is, the shared examples for cortex M and Cortex A on SDK.

We have not information about if RPMSG will be supported for Zephyr in Cortex M.

Best regards,

Salas.

Re: RPMsg support for m33 core on i.mx93

brendonslade — Wed, 19 Mar 2025 21:00:08 GMT

RPMsg is supported for Linux to RTOS communication in NXP's Real-Time Edge software framework. RTOS support includes Zephyr (along with FreeRTOS and bare metal). You can find out more about this at https://nxp.com/rtedge