A bit offtopic but I found this interesting article from one of the Pine64 Linux Community Developers.. and I think it may be interesting in the context of porting NuttX to Pine64 devices :-)
https://blog.brixit.nl/why-i-left-pine64/ Quite interesting as I am waiting for the 2022Q4 release of "desktop class" (OSHW rPI alternative) STAR64 board to work with on FreeBSD :-) https://wiki.pine64.org/wiki/STAR64 Here, in terms of kernel API stability and only one "OS as the distribution", both NuttX and FreeBSD may have clear advantage over Linux :-) I also have this feeling that only Open-Source-Software-AND-Hardware will be worth investing time in the long term, thus my focus on the RISC-V :-) -- CeDeROM, SQ7MHZ, http://www.tomek.cedro.info