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1Cadence GPIO controller bindings2 3Required properties:4- compatible: should be "cdns,gpio-r1p02".5- reg: the register base address and size.6- #gpio-cells: should be 2.7 * first cell is the GPIO number.8 * second cell specifies the GPIO flags, as defined in9 <dt-bindings/gpio/gpio.h>. Only the GPIO_ACTIVE_HIGH10 and GPIO_ACTIVE_LOW flags are supported.11- gpio-controller: marks the device as a GPIO controller.12- clocks: should contain one entry referencing the peripheral clock driving13 the GPIO controller.14 15Optional properties:16- ngpios: integer number of gpio lines supported by this controller, up to 32.17- interrupts: interrupt specifier for the controllers interrupt.18- interrupt-controller: marks the device as an interrupt controller. When19 defined, interrupts, interrupt-parent and #interrupt-cells20 are required.21- interrupt-cells: should be 2.22 * first cell is the GPIO number you want to use as an IRQ source.23 * second cell specifies the IRQ type, as defined in24 <dt-bindings/interrupt-controller/irq.h>.25 Currently only level sensitive IRQs are supported.26 27 28Example:29 gpio0: gpio-controller@fd060000 {30 compatible = "cdns,gpio-r1p02";31 reg =<0xfd060000 0x1000>;32 33 clocks = <&gpio_clk>;34 35 interrupt-parent = <&gic>;36 interrupts = <0 5 IRQ_TYPE_LEVEL_HIGH>;37 38 gpio-controller;39 #gpio-cells = <2>;40 41 interrupt-controller;42 #interrupt-cells = <2>;43 };44