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1What: /sys/devices/*/<our-device>/nvmem2Date: December 20173Contact: PrasannaKumar Muralidharan <prasannatsmkumar@gmail.com>4Description: read-only access to the efuse on the Ingenic JZ4780 SoC5 The SoC has a one time programmable 8K efuse that is6 split into segments. The driver supports read only.7 The segments are:8 9 ===== ======== =================10 0x000 64 bit Random Number11 0x008 128 bit Ingenic Chip ID12 0x018 128 bit Customer ID13 0x028 3520 bit Reserved14 0x1E0 8 bit Protect Segment15 0x1E1 2296 bit HDMI Key16 0x300 2048 bit Security boot key17 ===== ======== =================18 19Users: any user space application which wants to read the Chip20 and Customer ID21