[PATCH v3 4/8] gpio: dt-bindings: Add documentation for Aspeed GPIO controllers
From: Andrew Jeffery <hidden>
Date: 2016-08-30 07:56:14
Also in:
linux-gpio, lkml
Subsystem:
gpio subsystem, open firmware and flattened device tree bindings, the rest · Maintainers:
Linus Walleij, Bartosz Golaszewski, Rob Herring, Krzysztof Kozlowski, Conor Dooley, Linus Torvalds
Signed-off-by: Andrew Jeffery <redacted> Acked-by: Joel Stanley <joel@jms.id.au> --- .../devicetree/bindings/gpio/gpio-aspeed.txt | 36 ++++++++++++++++++++++ 1 file changed, 36 insertions(+) create mode 100644 Documentation/devicetree/bindings/gpio/gpio-aspeed.txt
diff --git a/Documentation/devicetree/bindings/gpio/gpio-aspeed.txt b/Documentation/devicetree/bindings/gpio/gpio-aspeed.txt
new file mode 100644
index 000000000000..09f26cac18d1
--- /dev/null
+++ b/Documentation/devicetree/bindings/gpio/gpio-aspeed.txt@@ -0,0 +1,36 @@ +Aspeed GPIO controller Device Tree Bindings +------------------------------------------- + +Required properties: +- #gpio-cells : Should be two + - First cell is the GPIO line number + - Second cell is used to specify optional + parameters (unused) + +- compatible : Either "aspeed,ast2400-gpio" or "aspeed,ast2500-gpio" + +- reg : Address and length of the register set for the device +- gpio-controller : Marks the device node as a GPIO controller. +- interrupts : Interrupt specifier (see interrupt bindings for + details) +- interrupt-controller : Mark the GPIO controller as an interrupt-controller + +Optional properties: + +- interrupt-parent : The parent interrupt controller, optional if inherited + +The gpio and interrupt properties are further described in their respective +bindings documentation: + +- Documentation/devicetree/bindings/gpio/gpio.txt +- Documentation/devicetree/bindings/interrupt-controller/interrupts.txt + + Example: + gpio@1e780000 { + #gpio-cells = <2>; + compatible = "aspeed,ast2400-gpio"; + gpio-controller; + interrupts = <20>; + reg = <0x1e780000 0x1000>; + interrupt-controller; + };
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2.9.3.1.g0db844e