[PATCH v1] Documentation: provide documentation for NVMEM interfaces.

[Sascha Hauer]

On Wed, May 17, 2017 at 12:03:48PM +0200, Oleksij Rempel wrote:
> Signed-off-by: Oleksij Rempel <o.rempel at pengutronix.de>
> ---
>  Documentation/user/nvmem.rst       | 30 ++++++++++++++++++++++++++++++
>  Documentation/user/user-manual.rst |  1 +
>  2 files changed, 31 insertions(+)
>  create mode 100644 Documentation/user/nvmem.rst

Applied, thanks

Sascha

> 
> diff --git a/Documentation/user/nvmem.rst b/Documentation/user/nvmem.rst
> new file mode 100644
> index 0000000000..f860b80fd5
> --- /dev/null
> +++ b/Documentation/user/nvmem.rst
> @@ -0,0 +1,30 @@
> +NVMEM subsystem
> +===============
> +
> +The NVMEM framework was partially ported from linux kernel.
> +
> +Except from linux kernel documentation:
> +*NVMEM* is the abbreviation for Non Volatile Memory layer. It is used to
> +retrieve configuration of SOC or Device specific data from non volatile
> +memories like eeprom, efuses and so on.
> +
> +Userspace binary interface
> +^^^^^^^^^^^^^^^^^^^^^^^^^^
> +
> +Userspace can read/write the raw NVMEM file located at
> +/dev/nvmem*
> +
> +.. code-block:: sh
> +
> +  md -s /dev/nvmem0 0+4
> +  00000000: 00000000                                           ....
> +
> +  mw -d /dev/nvmem0 0 0x12345678
> +
> +  md -s /dev/nvmem0 0+4
> +  00000000: 12345678                                           xV4.
> +
> +DeviceTree Binding
> +^^^^^^^^^^^^^^^^^^
> +
> +See linux kernel Documentation/devicetree/bindings/nvmem/nvmem.txt
> diff --git a/Documentation/user/user-manual.rst b/Documentation/user/user-manual.rst
> index 791c8e0979..b66782ef6a 100644
> --- a/Documentation/user/user-manual.rst
> +++ b/Documentation/user/user-manual.rst
> @@ -34,6 +34,7 @@ Contents:
>     system-reset
>     state
>     random
> +   nvmem
>  
>  * :ref:`search`
>  * :ref:`genindex`
> -- 
> 2.11.0
> 
> 
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