imx_rpmsg_tty not working on IMX8MQ EVK with 4.14.98 prebuilt binaries

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imx_rpmsg_tty not working on IMX8MQ EVK with 4.14.98 prebuilt binaries

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agnel_terry
Contributor III

Hi 

I am trying to validate the rpmsg  in the IMX8MQ EVK board with the prebuilt binaries , downloaded from the NXP site  , I trying with the 4.14.98 Kernel version and Yocto Sumo.

Bellow are the steps I tried to validate rpmsg:

1. In uboot load the auxiliary M4 image 

U-Boot > fatload mmc 1:1 0x7e0000 m4.bin
U-Boot > bootaux 0x7e0000

## Starting auxiliary core at 0x007E0000 ...

U-Boot>setenv fdt_file fsl-imx8mq-evk-m4.dtb

U-boot>boot

Once the Kernel boots 

insmod imx_rpmsg_tty.ko

after insmod checked /dev there is no ttyRPMSG0 node created, looks like the probe of the driver is not getting executed.

Can someone tell why in the prebuilt image why M4 rpmgs is not working and was this tested in this version of the kernel.

Thanks and Regards

Terry

 

 

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