schwar3kat

It may take me some time to work this out, and no there are no guarantees. In the mean time, the legacy build on linux-5.10y still appears to generate this directory at least it did when I built it last night. If you hover your mouse over the links in the archive, you can see the kernel versions. https://armbian.hosthatch.com/archive/orangepizeroplus/archive/ Kat

Hi Hans, I am currently looking at restoring the functionality for this build. I will let you know when I have further information. Kat

Hans, It is a kernel deprecation issue. There is a possibility that it can be added back dependent on effort required. I will look into this. https://www.kernel.org/doc/Documentation/gpio/sysfs.txt https://www.kernel.org/doc/Documentation/ABI/obsolete/sysfs-gpio https://www.kernel.org/doc/Documentation/driver-api/gpio/drivers-on-gpio.rst In the mean time, you may want to look into whether libgpiod can do what you need. ( apt install gpiod). A reasonable explanation and some instructions for using libgpiod. https://www.thegoodpenguin.co.uk/blog/stop-using-sys-class-gpio-its-deprecated/ Update: The pull request has been merged and functionality restored (in nightly builds until next release).

Hi Hans, Please could you report this as a bug. Perhaps something might have been missed https://www.armbian.com/bugs/ Edit: Actually hold off on the bug report. I suspect that this might be a kernel deprecation issue. I will investigate and report back. Kat

Just another observation... On one website that I came across, they recommended bubble wrap as an insulator around the board (don't do this). CPU temperature control works better without extra insulation on my Orange Pi zero in it's plastic case. I tested it and found that a maximum offset of less than +-20 micro seconds without insulation went up to +-24 micro seconds with insulation. My conclusion is that the board needs to be able to passively shed heat quickly (as well as heat up quickly). If your board is in an area with large ambient temperature variations then my guess is that some kind of insulation around a small "tweaked" volume of air acting as a temperature damper will probably work better than insulation directly on the board.

I've since become a maintainer for this board. I've added the new phy into the build, and it's working well for Linux-5.10y, Linux-5.15y and Linux-5.16y.