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03f1076fbe
In case if the platform doesn't have BIOS or a comprehensive firmware installed then the HBA capability flags will be left uninitialized. As a good alternative we suggest to define the DT-properties with the AHCI platform capabilities describing all the HW-init flags of the corresponding capability register. Luckily there aren't too many of them. SSS - Staggered Spin-up support and MPS - Mechanical Presence Switch support determine the corresponding feature availability for the whole HBA by means of the "hba-cap" property. Each port can have the "hba-port-cap" property initialized indicating that the port supports some of the next functionalities: HPCP - HotPlug capable port, MPSP - Mechanical Presence Switch attached to a port, CPD - Cold Plug detection, ESP - External SATA Port (eSATA), FBSCP - FIS-based switching capable port. Signed-off-by: Serge Semin <Sergey.Semin@baikalelectronics.ru> Reviewed-by: Rob Herring <robh@kernel.org> Signed-off-by: Damien Le Moal <damien.lemoal@opensource.wdc.com> |
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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.