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This is a somewhat unusual device, in that it effectively does spi offload. That means that it doesn't act as a full SPI master, but supports some functionality. As such it supports a subset of specific SPI ADCs. There is potential for a future clash in bindings, but as these are simple devices hopefully that will not occur. One addition to this from testing it against existing dts files was to add a resets property. This is specified in arch/arm/boot/dts/r8a7791.dtsi If it's the dtsi that is wrong and not the binding doc, then we can fix that instead. Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com> Reviewed-by: Rob Herring <robh@kernel.org> Cc: Marek Vasut <marek.vasut+renesas@gmail.com> Link: https://lore.kernel.org/r/20201031184854.745828-31-jic23@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.