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Synopsys DesignWare core based PCIe controllers in Tegra234 SoC interface with Universal PHY (UPHY) module through a PIPE2UPHY (P2U) module. For each PCIe lane of a controller, there is a P2U unit instantiated at hardware level. This driver provides support for the programming required for each P2U that is going to be used for a PCIe controller. Signed-off-by: Vidya Sagar <vidyas@nvidia.com> Link: https://lore.kernel.org/r/20220629060435.25297-9-vidyas@nvidia.com Signed-off-by: Vinod Koul <vkoul@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 Restructured Text 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.