iMX93 FRDM UART

mrunal3008 — Thu, 09 Oct 2025 06:02:32 GMT

I am using the iMX93 FRDM board with the base image. I want to use the UART3 pins of the board i.e. P11 pin 8 (UART3_TX), P11 pin 10 (UART3_RX). But in base image it is not enabled. So how can i enable it ?

Re: iMX93 FRDM UART

Zhiming_Liu — Mon, 13 Oct 2025 05:23:37 GMT

Hi,

1. Please refer instructions here to build yocto sdk,

https://docs.nxp.com/bundle/UG10195/page/topics/image_build_01.html

2. Then referring How to build U-Boot and kernel in a standalone environment here, need to modify imx93-frdm dts file to support uart3.

https://docs.nxp.com/bundle/UG10195/page/topics/customization.html

Best Regards,
Zhiming

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