What:		/sys/devices/platform/bone_capemgr/slots
Date:		May 2015
KernelVersion:	4.0
Contact:	Pantelis Antoniou <pantelis.antoniou@konsulko.com>
Description:
		READ:
		  Describe the state of all the slots of the beaglebone capemgr.
		  Each line of the output describes a slot:
		  The slot format is as following:
		  <slot-id>: [P-][F-][O-][l-][L-][D-] \
			  <overlay-id> <board-name>,<version>,
			  <manufacturer>,<part-number>

		Where the flags are:
		P: Slot has been probed
		F: Slot has failed probing (i.e. no EEPROM detected)
		O: Slot has been overridden by the user
		l: Slot is current loading
		L: Slot has completed loading and is ready
		D: Slot has been disabled

		Example:
		0: P---L-  -1 BeagleBone RS232 CAPE,00A1,Beagleboardtoys,BB-BONE-SERL-03
		1: PF----  -1
		2: PF----  -1
		3: PF----  -1

		WRITE:
		  Writing a string of the form <part-number>[:version] issues a request to
		  load a firmware blob containing an overlay. The name of the firmware blob
		  is <part-number>-[version|00A0].dtbo. This act is defined as a slot override.

		  Writing a negative slot id removes the slot if it was an overridden one, or
		  unloads a slot that was probed.

What:		/sys/devices/platform/bone_capemgr/baseboard/<eeprom-field>
Date:		May 2015
KernelVersion:	4.0
Contact:	Pantelis Antoniou <pantelis.antoniou@konsulko.com>
Description:	Contains the probed base board EEPROM field; one of:
		board-name		- board-name as stored in cape EEPROM
		dc-supplied		- whether the cape draws or supplies DC
		eeprom-format-revision	- EEPROM format rev, only 00A0 supported
		header			- header; should be 'aa 55 33 ee'
		manufacturer		- manufacturer string
		part-number		- part-number of the cape
		serial-number		- serial number of the cape
		version			- version of the cape, i.e. 00A0
		number-of-pins		- displayed but ignored
		pin-usage		- displayed but ignored
		sys-5v			- displayed but ignored
		vdd-3v3exp		- displayed but ignored
		vdd-5v			- displayed but ignored
What:		/sys/devices/platform/bone_capemgr/slot-<n>/<eeprom-field>
Date:		May 2015
KernelVersion:	4.0
Contact:	Pantelis Antoniou <pantelis.antoniou@konsulko.com>
Description:	Contains the probed cape's EEPROM field; the field is one of:
		board-name		- baseboard name i.e. A335BNLT
		header			- header; should be 'aa 55 33 ee'
		revision		- baseboard revision
		serial-number		- baseboard serial number
		config-option		- displayed but ignored