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The current i2c-gpio DT bindings use a single unnamed "gpios" property to refer to the SDA and SCL signal lines by index. This is error-prone for the casual DT writer and reviewer, as one has to look up the order in the DT bindings. Fix this by amending the DT bindings to use two separate named gpios properties, and deprecate the old unnamed variant. Take this opportunity to clearly deprecate the "i2c-gpio,sda-open-drain" and "i2c-gpio,scl-open-drain" flags as well. The commit describes in detail what these flags actually mean, and why they should not be used in new device trees. Cc: devicetree@vger.kernel.org Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be> [Augmented to what I and Rob would like] Tested-by: Geert Uytterhoeven <geert+renesas@glider.be> Acked-by: Rob Herring <robh@kernel.org> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Linux kernel ============ This file was moved to Documentation/admin-guide/README.rst Please notice that there are several guides for kernel developers and users. These guides can be rendered in a number of formats, like HTML and PDF. In order to build the documentation, use ``make htmldocs`` or ``make pdfdocs``. 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.