c6182a187b
In general the controller supports SPI dual mode operation but the particular SPI flash dual io read op switches from single mode in cmd phase to dual mode in address and data phase. This is not compatible with prepend operation where cmd and address are sent out through the prepend buffer and they must use same the number of io pins. This patch disables these SPI flash dual io read ops through the mem_ops supports_op interface. This makes sure the SPI flash driver selects the compatible read ops at run time. Signed-off-by: William Zhang <william.zhang@broadcom.com> Link: https://lore.kernel.org/r/20230209200246.141520-14-william.zhang@broadcom.com Signed-off-by: Mark Brown <broonie@kernel.org>
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.