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2ca300ac6e
Dynamic burst mode allows to group together multiple words and send them in one continuous burst. When the number of bytes to be sent is not a strict multiple of the FIFO entry size (32 bits), the controller expects the non aligned bits to be sent first. This commit adds support for this particular constraint, avoiding the need to send the non-aligned bytes one by one at the end of the transfer, speeding-up transfer speed in that case. With this method, a transfer is divided into multiple bursts, limited in size by the maximum amount of data that the controller can transfer in one continuous burst (which is 512 bytes). The non-512 byte part of the transfer is sent first. The remaining bytes to be transferred in the current burst is stored in the 'remainder' field. With this method, the read_u32 field is no longer necessary, and is removed. This was tested on imx6 solo and imx6 quad. Signed-off-by: Maxime Chevallier <maxime.chevallier@bootlin.com> Signed-off-by: Mark Brown <broonie@kernel.org> |
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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.
See Documentation/00-INDEX for a list of what is contained in each file.
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.