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Tariq Toukan says: ==================== Support one PTP device per hardware clock This series contains two features from Jianbo, followed by simple cleanups. Patches 1-9 by Jianbo add support for one PTP device per hardware clock, described below [1]. Patches 10-12 by Jianbo add support for 200Gbps per-lane link modes in kernel and mlx5 driver. Patches 13-15 are simple cleanups by Gal and Carolina. [1] PHC (PTP hardware clock) is normally shared by multiple functions (PF/VF/SF). mlx5 driver currently creates a separate PTP device for each network interface that shares one PHC. PHC can be configured to work as free running mode or real time mode. In this series, only one PTP device is created for the shared PHC when it is running in real time mode. To support this feature, * Firmware needs to support clock identity. When functions share a PHC, the clock identities they query are same. * Driver dynamically allocates mlx5_clock to represent a PHC. * New devcom component is added for hardware clock. Functions are grouped by the identity, and one mlx5_clock is allocated and shared by the functions with the same identity. * When PTP device accesses PHC by its callbacks, the first function in the clock devcom list is selected to send commands to firmware. * PPS IN event is armed on one function. It should be re-armed on the other one when current is unloaded. ==================== Link: https://patch.msgid.link/20250203213516.227902-1-tariqt@nvidia.com Signed-off-by: Paolo Abeni <pabeni@redhat.com> |
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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.