I am using a IMX8M mini EVK in my project. I am running android P9.0.0_2.3.1 on this. I followed the instructions from corresponding Android user guide document for the building and running the android image.
Also I have downloaded MCUExpresso SDK (Version 2.7.0) and I am able to build the example applications for imx8mm (FreeRTOS).
But I didn't find any suitable documentation on loading the m4 image along with Android. I wanted to try RPMSG related examples.(rpmsg_lite_str_echo_rtos).
Please provide the detailed documentation/links for the same.
You can flash the M4 image along with Android images using "uuu_imx_android_flash.sh" script.
Then after you need to set boot command as shown below to boot the M4 image as well.
See the attached Android Quick Start Guide to flash the images using uuu script.