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- What: /sys/devices/*/<our-device>/nvmem
- Date: December 2017
- Contact: PrasannaKumar Muralidharan <[email protected]>
- Description: read-only access to the efuse on the Ingenic JZ4780 SoC
- The SoC has a one time programmable 8K efuse that is
- split into segments. The driver supports read only.
- The segments are:
- ===== ======== =================
- 0x000 64 bit Random Number
- 0x008 128 bit Ingenic Chip ID
- 0x018 128 bit Customer ID
- 0x028 3520 bit Reserved
- 0x1E0 8 bit Protect Segment
- 0x1E1 2296 bit HDMI Key
- 0x300 2048 bit Security boot key
- ===== ======== =================
- Users: any user space application which wants to read the Chip
- and Customer ID
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