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47 lines
1.4 KiB
47 lines
1.4 KiB
* Oxford Semiconductor OXNAS SoC GPIO Controller |
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Please refer to gpio.txt for generic information regarding GPIO bindings. |
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Required properties: |
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- compatible: "oxsemi,ox810se-gpio" or "oxsemi,ox820-gpio" |
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- reg: Base address and length for the device. |
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- interrupts: The port interrupt shared by all pins. |
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- gpio-controller: Marks the port as GPIO controller. |
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- #gpio-cells: Two. The first cell is the pin number and |
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the second cell is used to specify the gpio polarity as defined in |
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defined in <dt-bindings/gpio/gpio.h>: |
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0 = GPIO_ACTIVE_HIGH |
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1 = GPIO_ACTIVE_LOW |
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- interrupt-controller: Marks the device node as an interrupt controller. |
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- #interrupt-cells: Two. The first cell is the GPIO number and second cell |
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is used to specify the trigger type as defined in |
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<dt-bindings/interrupt-controller/irq.h>: |
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IRQ_TYPE_EDGE_RISING |
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IRQ_TYPE_EDGE_FALLING |
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IRQ_TYPE_EDGE_BOTH |
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- gpio-ranges: Interaction with the PINCTRL subsystem, it also specifies the |
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gpio base and count, should be in the format of numeric-gpio-range as |
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specified in the gpio.txt file. |
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Example: |
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gpio0: gpio@0 { |
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compatible = "oxsemi,ox810se-gpio"; |
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reg = <0x000000 0x100000>; |
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interrupts = <21>; |
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#gpio-cells = <2>; |
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gpio-controller; |
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interrupt-controller; |
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#interrupt-cells = <2>; |
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gpio-ranges = <&pinctrl 0 0 32>; |
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}; |
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keys { |
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... |
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button-esc { |
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label = "ESC"; |
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linux,code = <1>; |
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gpios = <&gpio0 12 0>; |
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}; |
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};
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