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787799a9d5
The 6390X family has 8 SERDES interfaces. This allows ports 9 and 10 to support up to 10Gbps using 4 SERDES interfaces. However, when lower speeds are used, which need fewer SERDES interfaces, the unused SERDES interfaces can be used by ports 2-8. The hardware defaults to ports 9 and 10 having all 4 SERDES interfaces assigned to them. This only gets changed when the interface is configured after what the SFP supports has been determined, or the 10G PHY completes auto-neg. For hardware designs which limit ports 9 and 10 to one or two SERDES interfaces, and place SFPs on the lower interfaces, this is too late. Those ports with SFP should not wait until ports 9/10 are up in order to get access to the SERDES interface. So change the default configuration when the driver is initialised. Configure ports 9 and 10 to 1000BaseX, so they use a single SERDES interface, freeing up the others. They can steal them back if they need them. Signed-off-by: Andrew Lunn <andrew@lunn.ch> Signed-off-by: David S. Miller <davem@davemloft.net> |
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| README | ||
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.