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37 lines
1.2 KiB
Plaintext
37 lines
1.2 KiB
Plaintext
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* Abilis TB10x GPIO controller
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Required Properties:
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- compatible: Should be "abilis,tb10x-gpio"
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- reg: Address and length of the register set for the device
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- gpio-controller: Marks the device node as a gpio controller.
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- #gpio-cells: Should be <2>. The first cell is the pin number and the
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second cell is used to specify optional parameters:
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- bit 0 specifies polarity (0 for normal, 1 for inverted).
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- abilis,ngpio: the number of GPIO pins this driver controls.
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Optional Properties:
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- interrupt-controller: Marks the device node as an interrupt controller.
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- #interrupt-cells: Should be <1>. Interrupts are triggered on both edges.
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- interrupts: Defines the interrupt line connecting this GPIO controller to
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its parent interrupt controller.
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- interrupt-parent: Defines the parent interrupt controller.
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GPIO ranges are specified as described in
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Documentation/devicetree/bindings/gpio/gpio.txt
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Example:
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gpioa: gpio@FF140000 {
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compatible = "abilis,tb10x-gpio";
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interrupt-controller;
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#interrupt-cells = <1>;
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interrupt-parent = <&tb10x_ictl>;
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interrupts = <27 2>;
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reg = <0xFF140000 0x1000>;
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gpio-controller;
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#gpio-cells = <2>;
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abilis,ngpio = <3>;
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gpio-ranges = <&iomux 0 0 0>;
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gpio-ranges-group-names = "gpioa_pins";
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};
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