* Marvell EBU GPIO controller Required properties: - compatible : Should be "marvell,orion-gpio", "marvell,mv78200-gpio" or "marvell,armadaxp-gpio". "marvell,orion-gpio" should be used for Orion, Kirkwood, Dove, Discovery (except MV78200) and Armada 370. "marvell,mv78200-gpio" should be used for the Discovery MV78200. "marvel,armadaxp-gpio" should be used for all Armada XP SoCs (MV78230, MV78260, MV78460). - reg: Address and length of the register set for the device. Only one entry is expected, except for the "marvell,armadaxp-gpio" variant for which two entries are expected: one for the general registers, one for the per-cpu registers. - interrupts: The list of interrupts that are used for all the pins managed by this GPIO bank. There can be more than one interrupt (example: 1 interrupt per 8 pins on Armada XP, which means 4 interrupts per bank of 32 GPIOs). - interrupt-controller: identifies the node as an interrupt controller - #interrupt-cells: specifies the number of cells needed to encode an interrupt source. Should be two. The first cell is the GPIO number. The second cell is used to specify flags: bits[3:0] trigger type and level flags: 1 = low-to-high edge triggered. 2 = high-to-low edge triggered. 4 = active high level-sensitive. 8 = active low level-sensitive. - gpio-controller: marks the device node as a gpio controller - ngpios: number of GPIOs this controller has - #gpio-cells: Should be two. The first cell is the pin number. The second cell is reserved for flags, unused at the moment. Example: gpio0: gpio@d0018100 { compatible = "marvell,armadaxp-gpio"; reg = <0xd0018100 0x40>, <0xd0018800 0x30>; ngpios = <32>; gpio-controller; #gpio-cells = <2>; interrupt-controller; #interrupt-cells = <2>; interrupts = <16>, <17>, <18>, <19>; };