Greg Kroah-Hartman
598cf27219
Link: https://lore.kernel.org/r/20260217200002.683975158@linuxfoundation.org Tested-by: Florian Fainelli <florian.fainelli@broadcom.com> Tested-by: Takeshi Ogasawara <takeshi.ogasawara@futuring-girl.com> Tested-by: Peter Schneider <pschneider1968@googlemail.com> Tested-by: Jon Hunter <jonathanh@nvidia.com> Tested-by: Salvatore Bonaccorso <carnil@debian.org> Tested-by: Brett A C Sheffield <bacs@librecast.net> Tested-by: Mark Brown <broonie@kernel.org> Tested-by: Luna Jernberg <droidbittin@gmail.com> Tested-by: Ronald Warsow <rwarsow@gmx.de> Tested-by: Justin M. Forbes <jforbes@fedoraproject.org> Tested-by: Ron Economos <re@w6rz.net> Tested-by: Miguel Ojeda <ojeda@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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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