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Diffstat (limited to 'dts/Bindings/gpio/gpio-aspeed.txt')
| -rw-r--r-- | dts/Bindings/gpio/gpio-aspeed.txt | 36 |
1 files changed, 36 insertions, 0 deletions
diff --git a/dts/Bindings/gpio/gpio-aspeed.txt b/dts/Bindings/gpio/gpio-aspeed.txt new file mode 100644 index 0000000000..393bb2ed8a --- /dev/null +++ b/dts/Bindings/gpio/gpio-aspeed.txt @@ -0,0 +1,36 @@ +Aspeed GPIO controller Device Tree Bindings +------------------------------------------- + +Required properties: +- compatible : Either "aspeed,ast2400-gpio" or "aspeed,ast2500-gpio" + +- #gpio-cells : Should be two + - First cell is the GPIO line number + - Second cell is used to specify optional + parameters (unused) + +- 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; + }; |