* Freescale VF610 PORT/GPIO module The Freescale PORT/GPIO modules are two adjacent modules providing GPIO functionality. Each pair serves 32 GPIOs. The VF610 has 5 instances of each, and each PORT module has its own interrupt. Required properties for GPIO node: - compatible : Should be "fsl,-gpio", below is supported list: "fsl,vf610-gpio" "fsl,imx7ulp-gpio" - reg : The first reg tuple represents the PORT module, the second tuple the GPIO module. - interrupts : Should be the port interrupt shared by all 32 pins. - gpio-controller : Marks the device node as a gpio controller. - #gpio-cells : Should be two. The first cell is the pin number and the second cell is used to specify the gpio polarity: 0 = active high 1 = active low - interrupt-controller: Marks the device node as an interrupt controller. - #interrupt-cells : Should be 2. The first cell is the GPIO number. The second cell bits[3:0] is used to specify 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. Optional properties: -clocks: Must contain an entry for each entry in clock-names. See common clock-bindings.txt for details. -clock-names: A list of clock names. For imx7ulp, it must contain "gpio", "port". Note: Each GPIO port should have an alias correctly numbered in "aliases" node. Examples: aliases { gpio0 = &gpio1; gpio1 = &gpio2; }; gpio1: gpio@40049000 { compatible = "fsl,vf610-gpio"; reg = <0x40049000 0x1000 0x400ff000 0x40>; interrupts = <0 107 IRQ_TYPE_LEVEL_HIGH>; gpio-controller; #gpio-cells = <2>; interrupt-controller; #interrupt-cells = <2>; gpio-ranges = <&iomuxc 0 0 32>; }; gpio2: gpio@4004a000 { compatible = "fsl,vf610-gpio"; reg = <0x4004a000 0x1000 0x400ff040 0x40>; interrupts = <0 108 IRQ_TYPE_LEVEL_HIGH>; gpio-controller; #gpio-cells = <2>; interrupt-controller; #interrupt-cells = <2>; gpio-ranges = <&iomuxc 0 32 32>; };