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22a6d41c87
Some SPI devices, require toggling the CS every transferred byte. Enable such possibility in the spi-orion driver. Note that in order to use it, in the driver of a secondary device attached to this controller, the SPI bus 'mode' field must be updated with SPI_CS_WORD flag before calling spi_setup() routine. In addition to that include a work-around - some devices, such as certain models of SLIC (Subscriber Line Interface Card), may require extra delay after CS toggling, so add a minimal timing relaxation in relevant places. Signed-off-by: Marcin Wojtas <mw@semihalf.com> Signed-off-by: Konstantin Porotchkin <kostap@marvell.com> Link: https://lore.kernel.org/r/20201223103827.29721-3-kostap@marvell.com Signed-off-by: Mark Brown <broonie@kernel.org> |
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| kernel | ||
| lib | ||
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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.