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    Subject[PATCH v6 3/6] Documentation: ABI: nvmem: add documentation for JZ4780 efuse ABI
    Date
    From: PrasannaKumar Muralidharan <prasannatsmkumar@gmail.com>

    This patch brings support for the JZ4780 efuse. Currently it only exposes
    a read only access to the entire 8K bits efuse memory.

    Tested-by: Mathieu Malaterre <malat@debian.org>
    Signed-off-by: PrasannaKumar Muralidharan <prasannatsmkumar@gmail.com>
    Signed-off-by: Mathieu Malaterre <malat@debian.org>
    ---
    .../ABI/testing/sysfs-driver-jz4780-efuse | 16 ++++++++++++++++
    1 file changed, 16 insertions(+)
    create mode 100644 Documentation/ABI/testing/sysfs-driver-jz4780-efuse

    diff --git a/Documentation/ABI/testing/sysfs-driver-jz4780-efuse b/Documentation/ABI/testing/sysfs-driver-jz4780-efuse
    new file mode 100644
    index 000000000000..bb6f5d6ceea0
    --- /dev/null
    +++ b/Documentation/ABI/testing/sysfs-driver-jz4780-efuse
    @@ -0,0 +1,16 @@
    +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
    --
    2.23.0
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