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dt-bindings: gpio: Document GPIOs via Moxtet bus

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This patch adds documentation of the device tree bindings for GPIOs
on the devices connected via Moxtet bus.

Link: https://lore.kernel.org/r/20190812161118.21476-6-marek.behun@nic.cz
Signed-off-by: Marek Behún <marek.behun@nic.cz>
Reviewed-by: Rob Herring <robh@kernel.org>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
This commit is contained in:
Marek Behún 2019-08-12 18:11:18 +02:00 committed by Arnd Bergmann
parent 856ed97af5
commit 8c9e465b48
2 changed files with 19 additions and 0 deletions
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18
Documentation/devicetree/bindings/gpio/gpio-moxtet.txt Normal file
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Turris Mox Moxtet GPIO expander via Moxtet bus
Required properties:
- compatible : Should be "cznic,moxtet-gpio".
- gpio-controller : Marks the device node as a GPIO controller.
- #gpio-cells : Should be two. For consumer use see gpio.txt.
Other properties are required for a Moxtet bus device, please refer to
Documentation/devicetree/bindings/bus/moxtet.txt.
Example:
moxtet_sfp: gpio@0 {
compatible = "cznic,moxtet-gpio";
gpio-controller;
#gpio-cells = <2>;
reg = <0>;
}

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MAINTAINERS
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@ -1633,6 +1633,7 @@ S: Maintained
F: Documentation/ABI/testing/debugfs-moxtet
F: Documentation/ABI/testing/sysfs-bus-moxtet-devices
F: Documentation/devicetree/bindings/bus/moxtet.txt
F: Documentation/devicetree/bindings/gpio/gpio-moxtet.txt
F: include/linux/moxtet.h
F: drivers/bus/moxtet.c
F: drivers/gpio/gpio-moxtet.c