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Andrew Lunn says: ==================== PTP support for DSA and mv88e6xxx driver. This patchset adds support for using the PTP hardware in switches supported by the mv88e6xxx driver. The code was produces in collaboration with Brandon Streiff doing the initial implementation, and then Richard Cochran and Andrew Lunn making further changes and cleanups. The code is sufficient to use ptp4l on a single DSA interface, either as a master or a slave. Due to the use of an MDIO bus to access the switch, reading hardware timestamps is slower than what ptp4l expects. Thus it is necessary to use the option --tx_timestamp_timeout=32. Heavy use of ethtool -S, or bridge fdb show can also upset ptp4l. Patches to address this will follow. Further work is requires to support bridges using Boundary Clock or Transparent Clock mode. Since the RFC, an overflow bug has been fixed. Brandon Streiff has also Acked-by: the updates to his initial patchset. ==================== Signed-off-by: David S. Miller <davem@davemloft.net> |
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Linux kernel ============ This file was moved to Documentation/admin-guide/README.rst Please notice that there are several guides for kernel developers and users. These guides can be rendered in a number of formats, like HTML and PDF. In order to build the documentation, use ``make htmldocs`` or ``make pdfdocs``. There are various text files in the Documentation/ subdirectory, several of them using the Restructured Text markup notation. See Documentation/00-INDEX for a list of what is contained in each file. 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.