Cadence GPIO controller bindings Required properties: - compatible: should be "cdns,gpio-r1p02". - reg: the register base address and size. - #gpio-cells: should be 2. * first cell is the GPIO number. * second cell specifies the GPIO flags, as defined in . Only the GPIO_ACTIVE_HIGH and GPIO_ACTIVE_LOW flags are supported. - gpio-controller: marks the device as a GPIO controller. - clocks: should contain one entry referencing the peripheral clock driving the GPIO controller. Optional properties: - ngpios: integer number of gpio lines supported by this controller, up to 32. - interrupts: interrupt specifier for the controllers interrupt. - interrupt-controller: marks the device as an interrupt controller. When defined, interrupts, interrupt-parent and #interrupt-cells are required. - interrupt-cells: should be 2. * first cell is the GPIO number you want to use as an IRQ source. * second cell specifies the IRQ type, as defined in . Currently only level sensitive IRQs are supported. Example: gpio0: gpio-controller@fd060000 { compatible = "cdns,gpio-r1p02"; reg =<0xfd060000 0x1000>; clocks = <&gpio_clk>; interrupt-parent = <&gic>; interrupts = <0 5 IRQ_TYPE_LEVEL_HIGH>; gpio-controller; #gpio-cells = <2>; interrupt-controller; #interrupt-cells = <2>; };