Hi,
When I unload a device tree overlay,
/sys/devices/bone_capemgr.9/slots
is showing that it is removed. But when I cat the contents of
/sys/kernel/debug/pinctrl/44e10800.pinmux/pingroups
it still showing the overlay. If I try to load it again there will be two entries for the same overlay. But if I made any changes to that overlay it will not take into effect.
(Using 3.8.13-bone71 Debian)