How to use uart3 in imx6ull-colibri


I am using Colibri imx6ull (colibri imx6ulll 512MB WB IT)+ custom carrier board.

From the datasheet of Colibri imx6ull, we found that it provides 3 uart

Colibri UARTA → imx6ull uart1
Colibri UARTB → imx6ull uart2
Colibri UARTC → imx6ull uart5

I need to use another uart uart3 of imx6ull with rtscts pin.

What are the changes that need to be required for that?

For more information about the version, I have added the output of /etc/os-release and /etc/issue.

root@colibri-imx6ull-14797323:~# cat /etc/os-release
NAME="TDX Wayland with XWayland"
VERSION="5.7.2-devel-20230526090406+build.0 (dunfell)"
PRETTY_NAME="TDX Wayland with XWayland 5.7.2-devel-20230526090406+build.0 (dunfell)"
root@colibri-imx6ull-14797323:~# cat /etc/issue
TDX Wayland with XWayland 5.7.2-devel-20230526090406+build.0 (dunfell) \n \l


Hi @vishvas,

Thanks for your query.

Adding additional UART require to modify device tree and add uart node with correct iomux for pins.
Below I am sharing one similar post. Please refer and let us know if that help.

In case you still find same issue feel free to write us back.

Best Regards
Ritesh Kumar