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ade7da1495Add support for respecting the max-link-speed devicetree property, forcing a maximum speed (Gen) for a PCI-Express port. Since the MediaTek PCIe Gen3 controllers also expose the maximum supported link speed in the PCIE_BASE_CFG register, if property max-link-speed is specified in devicetree, validate it against the controller capabilities and proceed setting the limitations only if the wanted Gen is lower than the maximum one that is supported by the controller itself (otherwise it makes no sense!). Link: https://lore.kernel.org/r/20241104114935.172908-2-angelogioacchino.delregno@collabora.com Signed-off-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com> [kwilczynski: change dev_dbg() to dev_info() and update message wording] Signed-off-by: Krzysztof Wilczyński <kwilczynski@kernel.org> Reviewed-by: Fei Shao <fshao@chromium.org> Reviewed-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org> |
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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.