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c5151429e9
The oem zone ranges from 256 to 511 bytes. userspace can read/write the raw NVMEM file located at /sys/bus/nvmem/devices/rockchip-otp0/nvmem The rest of otp which ranging from 0 to 255 bytes is used for system, it is protected by hardware, any writes to this range will be ignored and not take effect. e.g. /#hexdump -C /sys/bus/nvmem/devices/rockchip-otp0/nvmem 00000000 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 * 00000100 ff ff ff ff ff ff ff ff 0f 0f 0f 0f 0f 0f 0f 0f 00000110 00 01 02 03 04 05 06 07 08 09 0a 0b 0c 0d 0e 0f 00000120 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 * 00000200 Change-Id: I3e222d87525887fd5a38aa724e97f2dd163345aa Signed-off-by: Sugar Zhang <sugar.zhang@rock-chips.com>
Linux kernel
============
There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.
In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``. The formatted documentation can also be read online at:
https://www.kernel.org/doc/html/latest/
There are various text files in the Documentation/ subdirectory,
several of them using the Restructured Text markup notation.
See Documentation/00-INDEX for a list of what is contained in each file.
Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.