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Add a common DT schema for DPLL device and its associated pins. The DPLL (device phase-locked loop) is a device used for precise clock synchronization in networking and telecom hardware. The device includes one or more DPLLs (channels) and one or more physical input/output pins. Each DPLL channel is used either to provide a pulse-per-clock signal or to drive an Ethernet equipment clock. The input and output pins have the following properties: * label: specifies board label * connection type: specifies its usage depending on wiring * list of supported or allowed frequencies: depending on how the pin is connected and where) * embedded sync capability: indicates whether the pin supports this Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org> Signed-off-by: Ivan Vecera <ivecera@redhat.com> Reviewed-by: Jiri Pirko <jiri@nvidia.com> Link: https://patch.msgid.link/20250704182202.1641943-2-ivecera@redhat.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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.