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