Second UART on i.MX8MQ-EVK

[lcothales]

Hi,

I tried to use the second UART of my iMX8MQ-EVK to print the output of the Linux console.
I built a Linux with yocto (version : imx-6.1.36-2.1.0).
I have enabled all uarts in the device tree. So, in my Linux, I have ttymxc0/1/2/3 but
none sends traces to my minicom on ttyUSB1 when I change console boot parameter via u-boot.

The second UART is dedicated to M4 or it can be used with A53 ?
Is there a way to enable the second UART ?

Thanks in advance,

[JosephAtNXP · Accepted solution]

Hi,

Thank you for your interest in NXP Semiconductor products,

As this post suggests, you need to make changes starting from atf, could you follow the guide and feed if you succeed?

Regards