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The ecspi IP block on imx51/imx53/imx6 have four native chip selects. Tell that to the spi core so that any non-gpio chip selects get validated against that upper bound. Also set the SPI_MASTER_GPIO_SS so that the core verifies that, in the case where both native and gpio chip selects are in use, there is at least one leftover native chip select (or "channel", in the ecspi language) for use by the slaves sitting on gpio chip selects. Signed-off-by: Rasmus Villemoes <linux@rasmusvillemoes.dk> Link: https://lore.kernel.org/r/20230425134527.483607-3-linux@rasmusvillemoes.dk 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.