[IMX8QM] How to stop Cortex-M4 from Linux

[Marco_Schettini]

Hi,

I have an imx8qm-mek and I'm trying to stop the Cortex-M4 from the Linux system.

I followed the guide to compile the Linux image ( v. 5.15.32_2.0.0 ) using Yocto and I copied the resulting image on the microSD. 

I also read the documentation about the Asymmetric Multi-Processing Application Processors.

When I execute the command:

echo stop > /sys/class/remoteproc/remoteproc1/state

I get the following error:

[  273.961402] imx-rproc imx8qm_cm4@0: Failed to stop M4!
[  273.966937] remoteproc remoteproc1: can't stop rproc: -13

Does anybody know which is the correct way to stop it?

[joanxie]

I have already mailed to you last week, pls try the new image as I said in mail

[Marco_Schettini]

Hi,

I tried the images that you share with me by email but they get me the same error message.

[joanxie]

I am on annual leave now, I will reproduce this and tell you result ASAP when I come back to work