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45456e38c4
PHY drivers support loopback mode, but it is not possible to select the speed of the loopback mode. The speed is chosen by the set_loopback() operation of the PHY driver. Same is valid for genphy_loopback(). There are PHYs that support loopback with different speeds. Extend set_loopback() to make loopback speed selection possible. Signed-off-by: Gerhard Engleder <gerhard@engleder-embedded.com> Reviewed-by: Andrew Lunn <andrew@lunn.ch> Link: https://patch.msgid.link/20250312203010.47429-2-gerhard@engleder-embedded.com Signed-off-by: Paolo Abeni <pabeni@redhat.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 reStructuredText 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.