I have a Beaglebone Black with a recent Debian image that I loaded, we have some SPI hardware on one of those proto-board things, which works totally fine without the cape installed.
Then we have pass through pins and a cell network modem cape sitting on top of that, which seems to work just fine on its own.
Ultimately I need both of these things working at once, but with the cape plugged in, SPI disappears entirely and I can't seem to do anything to get it to load (echo BB-SPIDEV-0 > capemgr/slots does nothing, and modprobe does nothing).
Does anybody know why this is and have a solution?