Imx8m mini Messaging unit issue

[Jarvis3345]

Hi Team,

Iam currently working on i.mx8m mini SoM using a custom carrier board the yocto version iam using is kirkstone with kernel version 5.15 and uboot 2022, Iam using messaging unit for the interprocessor communication but after loading the m4 binary the board boots fine and I am getting logs from m4 and a53 in the serial but the communication between the m4 and a53 is not happening when I debug the imx-mailbox.c it is observed that the probe is happening properly but the imx_mu_startup and the imx_mu_isr function is not getting called.The MU is working perfectly fine in the 5.4 kernel and the IPC is working fine, do  I have to enable something in the new kernel or help me figure out what iam missing.

Thanks

Abiram

[Zhiming_Liu]

Hi @Jarvis3345 

You don't need modify the default kernel code, can you confirm again about imx_mu_isr function?

[Jarvis3345]

Hi,

I was missing "rx" and "tx" in the mboxes names because of which the driver itself was not probing after adding that to the dts file(custom dts file) it worked

Thanks for the reply @Zhiming_Liu