1Cadence GPIO controller bindings 2 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 in 9 <dt-bindings/gpio/gpio.h>. Only the GPIO_ACTIVE_HIGH 10 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 driving 13 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. When 19 defined, interrupts, interrupt-parent and #interrupt-cells 20 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 in 24 <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