camera porting and zephyr on i.mx 93 evk

[csalitre]

Hello everyone! Noobie here, 

I have read zephyr documentation on their support for NXP i.MX93 EVK. I am a little confused on what is the best approach. My main use case is camera porting, so my understanding is that I will need to port Zephyr on the A55 core. I have seen some experimental examples on Zephyr's repository, but no official support for MIPI-CSI. 

My other question is should I run Zephyr on both A55 and M33 or just on the A55? 

Thank you!

[danielchen]

Hi @csalitre 

Just let you know we are developing  a Bar scanner demo for FRDM-93 board,  this demo is running on Zephyr OS,  A55 core,  will support MIPI-CSI.    it is very similar to your requirements.

Regards

Daniel

[RutvijTrivedi207]

Hi,

For i.MX93, Zephyr is typically used on the M33 for real-time control, while Linux on the A55 handles camera and media pipelines. Zephyr on A55 is currently suitable mainly for early driver bring-up; official MIPI-CSI camera support is still not available in Zephyr.
Relevant upstream references you may find useful:

Linux Camera drivers

1. https://web.git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git/commit/?id=fa9e6df636fb8b3b2...
2. https://patchew.org/linux/20251216065956.13604-1-himanshu.bhavani@siliconsignals.io/20251216065956.1...
3. https://web.git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git/commit/?id=5bd6b8c1bb2d49d5f...

Zephyr camera driver

1. https://github.com/zephyrproject-rtos/zephyr/commit/c784481ca039ccd606a192ee07bc83f6b0117e59

Camera brindup guide from Silicon Signals

1. https://siliconsignals.io/blog/v4l2-camera-stack-step-by-step-guide-for-custom-devices/

Hope this helps.