5c7dd7acc3
repo: https://github.com/T-head-Semi/linux commit: b1313fe517ca3703119dcc99ef3bbf75ab42bcfb Change-Id: I6cbb35294024ea3a66140e311f4bb705fd7fd626
21 lines
692 B
Plaintext
21 lines
692 B
Plaintext
What: /sys/devices/*/<our-device>/nvmem
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Date: December 2017
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Contact: PrasannaKumar Muralidharan <prasannatsmkumar@gmail.com>
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Description: read-only access to the efuse on the Ingenic JZ4780 SoC
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The SoC has a one time programmable 8K efuse that is
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split into segments. The driver supports read only.
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The segments are:
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===== ======== =================
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0x000 64 bit Random Number
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0x008 128 bit Ingenic Chip ID
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0x018 128 bit Customer ID
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0x028 3520 bit Reserved
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0x1E0 8 bit Protect Segment
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0x1E1 2296 bit HDMI Key
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0x300 2048 bit Security boot key
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===== ======== =================
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Users: any user space application which wants to read the Chip
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and Customer ID
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