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69f42be8af
1000BaseT standard requires that a link is reported as down earliest after 750ms. Several use case however require a much faster detecion of a broken link. Fast Link Down supports this by intentionally violating a the standard. This patch exposes the Fast Link Down feature of 88E1540 and 88E6390. These PHY's can be found as internal PHY's in several switches: 88E6352, 88E6240, 88E6176, 88E6172, and 88E6390(X). Fast Link Down and EEE are mutually exclusive. Signed-off-by: Heiner Kallweit <hkallweit1@gmail.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.