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004f8ea0d9
Continuous reading may result in multiple flash pages reading in one operation. Typically only one flash page has read/written (a little bit more than 2-4 Kb), but continuous reading requires the spi controller to read up to 512 Kb in one operation without toggling CS in beetween. Roughly speaking spi controllers can be divided on 2 categories: * spi controllers without dirmap acceleration support * spi controllers with dirmap acceleration support Firt of them will have issues with continuous reading if restriction on the transfer length is implemented in the adjust_op_size() handler. Second group often supports acceleration of single page only reading. Thus enabling of continuous reading can break flash reading. This patch tries to create dirmap for continuous reading first and fallback to regular reading if spi controller refuses to create it. Signed-off-by: Mikhail Kshevetskiy <mikhail.kshevetskiy@iopsys.eu> Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com> |
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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 reStructuredText 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.