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* According to the R-Car Gen3 Hardware Manual Errata for Rev 1.00 of August 24, 2018, the TX clock internal delay mode isn't supported on R-Car E3 (r8a77990) and D3 (r8a77995). * TX clock internal delay mode is required for reliable 1Gbps communication using the KSZ9031RNX phy present on the Ebisu and Draak boards. Thus, the E3 based Ebisu and D3 based Draak boards can not reliably use 1Gbps and the speed should be limited to 100Mbps. Based on work by Kazuya Mizuguchi. Signed-off-by: Simon Horman <horms+renesas@verge.net.au> Reviewed-by: Wolfram Sang <wsa+renesas@sang-engineering.com> Reviewed-by: Andrew Lunn <andrew@lunn.ch> Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
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.