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PL061 GPIO controller bindings
Required properties:
- compatible:
- "arm,pl061", "arm,primecell".
- #gpio-cells : Should be two.
- first cell is the gpio pin number
- second cell is used to specify the gpio polarity:
0 = active high
1 = active low
- gpio-controller : Marks the device node as a GPIO controller.
- interrupt-controller : Marks the device node as an interrupt controller.
- #interrupt-cells : Should be two.
- first cell is the hw irq number
- second cell is used to specify the interrupt type:
0 = default, unspecified type
1 = rising edge triggered
2 = falling edge triggered
4 = high level triggered
8 = low level triggered
- linux,gpio-base : Should be the global GPIO number.
Example:
gpio0: gpio@fc806000 {
compatible = "arm,pl061", "arm,primecell";
reg = <0xfc806000 0x1000>;
interrupts = <0 64 0x4>;
gpio-controller;
#gpio-cells = <2>;
interrupt-controller;
#interrupt-cells = <2>;
linux,gpio-base = <0>;
};
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