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.
Julien Beraud
authored
There are 2 registers to write to enable a ptp ref clock coming from the fpga. One that enables the usage of the clock from the fpga for emac0 and emac1 as a ptp ref clock, and the other to allow signals from the fpga to reach emac0 and emac1. Currently, if the dwmac-socfpga has phymode set to PHY_INTERFACE_MODE_MII, PHY_INTERFACE_MODE_GMII, or PHY_INTERFACE_MODE_SGMII, both registers will be written and the ptp ref clock will be set as coming from the fpga. Separate the 2 register writes to only enable signals from the fpga to reach emac0 or emac1 when ptp ref clock is not coming from the fpga. Signed-off-by:Julien Beraud <julien.beraud@orolia.com> Signed-off-by:
David S. Miller <davem@davemloft.net>
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