I built a custom carrier board using several of the GPIOs for communication with other circuitry. Having problems with a few of them:
These four are producing a “device or resource busy” signal when I try to use them. I’ve filled out the pinmux and updated the device tree already.
I believe the problem with GPIO08 and GPIO14 is that they’re used by the thermal fan. Does anybody know a way to disable this?
I’m not sure what’s using GPIO04 and GPIO06.