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PTP capabilities are negotiated using virtchnl commands. There are two available modes of the PTP support: direct and mailbox. When the direct access to PTP resources is negotiated, virtchnl messages returns a set of registers that allow read/write directly. When the mailbox access to PTP resources is negotiated, virtchnl messages are used to access PTP clock and to read the timestamp values. Virtchnl API covers both modes and exposes a set of PTP capabilities. Using virtchnl API, the driver recognizes also HW abilities - maximum adjustment of the clock and the basic increment value. Additionally, API allows to configure the secondary mailbox, dedicated exclusively for PTP purposes. Reviewed-by: Alexander Lobakin <aleksander.lobakin@intel.com> Reviewed-by: Willem de Bruijn <willemb@google.com> Reviewed-by: Jacob Keller <jacob.e.keller@intel.com> Signed-off-by: Milena Olech <milena.olech@intel.com> Tested-by: Mina Almasry <almasrymina@google.com> Tested-by: Samuel Salin <Samuel.salin@intel.com> Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com> |
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| crypto | ||
| Documentation | ||
| drivers | ||
| fs | ||
| include | ||
| init | ||
| io_uring | ||
| ipc | ||
| kernel | ||
| lib | ||
| LICENSES | ||
| mm | ||
| net | ||
| rust | ||
| samples | ||
| scripts | ||
| security | ||
| sound | ||
| tools | ||
| usr | ||
| virt | ||
| .clang-format | ||
| .clippy.toml | ||
| .cocciconfig | ||
| .editorconfig | ||
| .get_maintainer.ignore | ||
| .gitattributes | ||
| .gitignore | ||
| .mailmap | ||
| .rustfmt.toml | ||
| COPYING | ||
| CREDITS | ||
| Kbuild | ||
| Kconfig | ||
| MAINTAINERS | ||
| Makefile | ||
| README | ||
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.