#  echo BB-ADC > /sys/devices/bone_capemgr.*/slots
bash: echo: write error: Invalid argument

# dmesg
...
[24172.185529] bone-capemgr bone_capemgr.9: slot #8: generic override
[24172.185587] bone-capemgr bone_capemgr.9: bone: Using override eeprom data at slot 8
[24172.185636] bone-capemgr bone_capemgr.9: slot #8: 'Override Board Name,00A0,Override Manuf,BB-ADC'
[24172.186067] bone-capemgr bone_capemgr.9: slot #8: Requesting part number/version based 'BB-ADC-00A0.dtbo
[24172.186119] bone-capemgr bone_capemgr.9: slot #8: Requesting firmware 'BB-ADC-00A0.dtbo' for board-name 'Override Board Name', version '00A0'
[24172.186189] bone-capemgr bone_capemgr.9: slot #8: dtbo 'BB-ADC-00A0.dtbo' loaded; converting to live tree
[24172.186441] bone-capemgr bone_capemgr.9: slot #8: Failed to resolve tree