388f08ecdc
The denoted in the description upper limit only concerns the Port Multipliers, but not the actual SATA ports. It's an external device attached to a SATA port in order to access more than one SATA-drive. So when it's attached to a SATA port it just extends the port capability while the number of actual SATA ports stays the same. For instance on AHCI controllers the number of actual ports is determined by the CAP.NP field and the PI (Ports Implemented) register. AFAICS in general the maximum number of SATA ports depends on the particular controller implementation. Generic AHCI controller can't have more than 32 ports (since CAP.NP is of 5 bits wide and PI register is 32-bits size), while DWC AHCI SATA controller can't be configured with more than 8 ports activated. So let's discard the SATA ports reg-property restrictions and just make sure that it consists of a single reg-item. Signed-off-by: Serge Semin <Sergey.Semin@baikalelectronics.ru> Reviewed-by: Hannes Reinecke <hare@suse.de> Reviewed-by: Rob Herring <robh@kernel.org> Signed-off-by: Damien Le Moal <damien.lemoal@opensource.wdc.com>
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.