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