komar

Thank you for detailed answer! > So we limit read/write/erase operations to the first 128Mib. But in linux kernel everything working fine, may be it's good idea to take a...

I think is good idea to add variable PYTHON3 also

If PYTHON3 unset - do not build for python3. if setted - build it, by `$(PYTHON3) -q setup.py ...`. Can be usefull for yocto build. For example for native build...

Looks like you have kernel before v5.10, when gpiochip API v2 was introduced. Actually dropping gpiochip API v1 from lgpio v0.2 it's a problem, becouse a lot of embedded systems...

Maybe make them act like `rz/sz` from [lrzsz](https://github.com/UweOhse/lrzsz)? They work via stdin/stdout, and then test just connect them via `pipe()`. I think it's will be usefull as `lrzsz` alternative.