What:		/sys/class/rpmb/
Date:		Aug 2016
KernelVersion:  4.8
Contact:	Tomas Winkler <tomas.winkler@intel.com>
Description:
		The rpmb/ class sub-directory belongs to RPMB device class.

		Few storage technologies such is EMMC, UFS, and NVMe support
		Replay Protected Memory Block (RPMB) hardware partition with
		common protocol and frame layout.
		Such a partition provides authenticated and replay protected access,
		hence suitable as a secure storage.

What:		/sys/class/rpmb/rpmbN/
Date:		Aug 2016
KernelVersion:	4.8
Contact:	Tomas Winkler <tomas.winkler@intel.com>
Description:
		The /sys/class/rpmb/rpmbN directory is created for
		each RPMB registered device

What:		/sys/class/rpmb/rpmbN/id
Date:		Aug 2016
KernelVersion:	4.8
Contact:	Tomas Winkler <tomas.winkler@intel.com>
Description:
		The /sys/class/rpmb/rpmbN/id file contains device id
		in a binary form

What:		/sys/class/rpmb/rpmbN/type
Date:		Aug 2016
KernelVersion:	4.8
Contact:	Tomas Winkler <tomas.winkler@intel.com>
Description:
		The /sys/class/rpmb/rpmbN/type file contains device
		underlay storage type technology: EMMC, UFS, SIM

What:		/sys/class/rpmb/rpmbN/reliable_wr_cnt
Date:		Aug 2016
KernelVersion:	4.8
Contact:	Tomas Winkler <tomas.winkler@intel.com>
Description:
		The /sys/class/rpmb/rpmbN/reliable_wr_cnt file contains
		number of blocks that can be written in a single request
