root@beaglebone:/sys/devices/bone_capemgr.7# echo BB-I2C1 >slots
[ 2777.164004] bone-capemgr bone_capemgr.7: part_number 'BB-I2C1', version 'N/A'
[ 2777.175047] bone-capemgr bone_capemgr.7: slot #6: generic override
[ 2777.181765] bone-capemgr bone_capemgr.7: bone: Using override eeprom data at slot 6
[ 2777.189949] bone-capemgr bone_capemgr.7: slot #6: 'Override Board Name,00A0,Override Manuf,BB-I2C1'
[ 2777.216355] bone-capemgr bone_capemgr.7: slot #6: Requesting part number/version based 'BB-I2C1-00A0.dtbo
[ 2777.227355] bone-capemgr bone_capemgr.7: slot #6: Requesting firmware 'BB-I2C1-00A0.dtbo' for board-name 'Override Board Name', version '00A0'
[ 2777.241793] bone-capemgr bone_capemgr.7: slot #6: dtbo 'BB-I2C1-00A0.dtbo' loaded; converting to live tree
[ 2777.255801] bone-capemgr bone_capemgr.7: slot #6: #2 overlays
[ 2777.277856] omap_i2c 4802a000.i2c: bus 2 rev0.11 at 100 kHz
[ 2777.289744] omap_i2c 4802a000.i2c: unable to select pin group
[ 2777.302783] bone-capemgr bone_capemgr.7: slot #6: Applied #2 overlays.
root@beaglebone:/sys/devices/bone_capemgr.7# cat slots
 0: 54:PF---
 1: 55:PF---
 2: 56:PF---
 3: 57:PF---
 4: ff:P-O-L Override Board Name,00A0,Override Manuf,BB-BONE-PRU-03
 6: ff:P-O-L Override Board Name,00A0,Override Manuf,BB-I2C1