Imx8m mini A53-M4 Core

Technical Support
1

using verdini imx8m mini som module ,planning to use M4 core for few tasks and need to communciate between A53 and M4 core,how that can be done?

2

Hi, I’m the Toradex AI Assistant.

I might make mistakes or occasionally get you wrong. Our support team will step in if needed.

I’d be glad to help you with A53-M4 core communication on the Verdin iMX8M Mini! To provide the most accurate guidance, could you let me know which OS and version you are running?

For example:

  • Hardware: Verdin iMX8M Mini on which carrier board (Development Board, Dahlia, etc.)
  • OS: Torizon OS 6.x, Torizon OS 7.x, Yocto BSP 6.x, or BSP 7.x
  • Version: Specific version number

You can get this information using the tdx-info command on your module. More details here: Getting Device Information with Tdx-Info | Toradex Developer Center

Once I know your platform details, I can guide you through the specific steps for:

  • Setting up HMP (Heterogeneous Multi-core Processing)
  • Configuring RPMsg communication
  • Loading firmware on the M4 core
  • Device tree overlay configuration

Best regards, Toradex AI Assistant.

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For follow-up questions to me, please use @ToradexAI in your post.

3

Hi @Somesh ,
You can use RPMsg (Remote Processor Messaging), which is an inter-processor communication (IPC) framework, to communicate between the Cortex-A53 and Cortex-M4 cores.

Typically:

  • Cortex-A53 runs Linux

  • Cortex-M4 runs bare-metal firmware or an RTOS such as FreeRTOS

Once the RPMsg framework is initialized, RPMsg channels can appear as /dev/ttyRPMSG* devices on the Linux side, allowing message exchange between the A53 and M4 cores.

The documentaion and demos are provided by NXP and you can follow the guide from the bewlo link
FreeRTOS on Verdin iMX8MM