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A mirror of the official Linux kernel repository just in case
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Baikal-T1 SoC is equipped with DWC PCIe v4.60a host controller. It can be trained to work up to Gen.3 speed over up to x4 lanes. The host controller is attached to the DW PCIe 3.0 PCS via the PIPE-4 interface, which in its turn is connected to the DWC 10G PHY. The whole system is supposed to be fed up with four clock sources: DBI peripheral clock, AXI application clocks and external PHY/core reference clock generating the 100MHz signal. In addition to that the platform provide a way to reset each part of the controller: sticky/non-sticky bits, host controller core, PIPE interface, PCS/PHY and Hot/Power reset signal. The driver also provides a way to handle the GPIO-based PERST# signal. Note due to the Baikal-T1 MMIO peculiarity we have to implement the DBI interface accessors which make sure the IO operations are dword-aligned. Link: https://lore.kernel.org/r/20221113191301.5526-21-Sergey.Semin@baikalelectronics.ru Signed-off-by: Serge Semin <Sergey.Semin@baikalelectronics.ru> Signed-off-by: Lorenzo Pieralisi <lpieralisi@kernel.org> |
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| kernel | ||
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| 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 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.