0001 What: /sys/devices/*/<our-device>/nvmem
0002 Date: December 2017
0003 Contact: PrasannaKumar Muralidharan <prasannatsmkumar@gmail.com>
0004 Description: read-only access to the efuse on the Ingenic JZ4780 SoC
0005 The SoC has a one time programmable 8K efuse that is
0006 split into segments. The driver supports read only.
0007 The segments are:
0008
0009 ===== ======== =================
0010 0x000 64 bit Random Number
0011 0x008 128 bit Ingenic Chip ID
0012 0x018 128 bit Customer ID
0013 0x028 3520 bit Reserved
0014 0x1E0 8 bit Protect Segment
0015 0x1E1 2296 bit HDMI Key
0016 0x300 2048 bit Security boot key
0017 ===== ======== =================
0018
0019 Users: any user space application which wants to read the Chip
0020 and Customer ID
