| What: /sys/devices/*/<our-device>/nvmem |
| Date: December 2017 |
| Contact: PrasannaKumar Muralidharan <prasannatsmkumar@gmail.com> |
| 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 |
