How to identify the net name mapping to DTS (device tree) and reference manual pin name and multiplexing?

Refer section OSM GPIOs from the OSM hardware user guide for SoC PAD name of the corresponding OSM pin name.

Copy the PAD name and search in the file,

arch/arm64/boot/dts/freescale/imx93-pinfunc.h” in linux source to get the IOMUX.

Select the exact ALT function for the PAD and use it in dts.

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Please find the detailed product information here:
i.MX 93 Pico ITXSingle Board Computer