777b8afb81
10G-QXGMII is a MAC-to-PHY interface defined by the USXGMII multiport specification. It uses the same signaling as USXGMII, but it multiplexes 4 ports over the link, resulting in a maximum speed of 2.5G per port. Some in-tree SoCs like the NXP LS1028A use "usxgmii" when they mean either the single-port USXGMII or the quad-port 10G-QXGMII variant, and they could get away just fine with that thus far. But there is a need to distinguish between the 2 as far as SerDes drivers are concerned. Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com> Signed-off-by: Luo Jie <quic_luoj@quicinc.com> Reviewed-by: Andrew Lunn <andrew@lunn.ch> Reviewed-by: Russell King (Oracle) <rmk+kernel@armlinux.org.uk> 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.