If you want to build device drivers for an cross target (yocto build) ...

[Tonkabot1]

I am exploring creating a device driver for my embedded system, but the examples all seem to fail, I assume because none of it is really appropriate.
There should at least be a warning that you need to do something a lot different in that case.

I am doing a yocto build for an imx8mm module on our custom hardware, and have been frustrated with trying to use gpio pins through the command line interface.

[jserv]

At present, all example code shipped with LKMPG is intended to be used with ordinary Linux distributions rather than platform builders such as Yocto. For GPIO-specific examples, they are prepared for Raspberry Pi, meaning that you have to adapt them for i.MX platforms.