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On some SoCs, such as the i.MX6, it is necessary to set a bit in the SoC level GPR register before suspending for wake on lan to work. The fec platform callback sleep_mode_enable was intended to allow this but the platform implementation was NAK'd back in 2015 [1] This means that, currently, wake on lan is broken on mainline for the i.MX6 at least. So implement the required bit setting in the fec driver by itself by adding a new optional DT property indicating the GPR register and adding the offset and bit information to the driver. [1] https://www.spinics.net/lists/netdev/msg310922.html Signed-off-by: Martin Fuzzey <martin.fuzzey@flowbird.group> Signed-off-by: Fugang Duan <fugang.duan@nxp.com> Signed-off-by: David S. Miller <davem@davemloft.net>
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.
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.