1* Oxford Semiconductor OXNAS SoC GPIO Controller 2 3Please refer to gpio.txt for generic information regarding GPIO bindings. 4 5Required properties: 6 - compatible: "oxsemi,ox810se-gpio" or "oxsemi,ox820-gpio" 7 - reg: Base address and length for the device. 8 - interrupts: The port interrupt shared by all pins. 9 - gpio-controller: Marks the port as GPIO controller. 10 - #gpio-cells: Two. The first cell is the pin number and 11 the second cell is used to specify the gpio polarity as defined in 12 defined in <dt-bindings/gpio/gpio.h>: 13 0 = GPIO_ACTIVE_HIGH 14 1 = GPIO_ACTIVE_LOW 15 - interrupt-controller: Marks the device node as an interrupt controller. 16 - #interrupt-cells: Two. The first cell is the GPIO number and second cell 17 is used to specify the trigger type as defined in 18 <dt-bindings/interrupt-controller/irq.h>: 19 IRQ_TYPE_EDGE_RISING 20 IRQ_TYPE_EDGE_FALLING 21 IRQ_TYPE_EDGE_BOTH 22 - gpio-ranges: Interaction with the PINCTRL subsystem, it also specifies the 23 gpio base and count, should be in the format of numeric-gpio-range as 24 specified in the gpio.txt file. 25 26Example: 27 28gpio0: gpio@0 { 29 compatible = "oxsemi,ox810se-gpio"; 30 reg = <0x000000 0x100000>; 31 interrupts = <21>; 32 #gpio-cells = <2>; 33 gpio-controller; 34 interrupt-controller; 35 #interrupt-cells = <2>; 36 gpio-ranges = <&pinctrl 0 0 32>; 37}; 38 39keys { 40 ... 41 42 button-esc { 43 label = "ESC"; 44 linux,code = <1>; 45 gpios = <&gpio0 12 0>; 46 }; 47}; 48