dt-bindings: gpio: Convert vf610 to json-schema

* 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,<soc>-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>;

};

# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)

%YAML 1.2

---

$id: http://devicetree.org/schemas/gpio/gpio-vf610.yaml#

$schema: http://devicetree.org/meta-schemas/core.yaml#

title: Freescale VF610 PORT/GPIO module

maintainers:

  - Stefan Agner <stefan@agner.ch>

description: |

  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.

  Note: Each GPIO port should have an alias correctly numbered in "aliases"

  node.

properties:

  compatible:

    enum:

      - fsl,vf610-gpio

      - fsl,imx7ulp-gpio

  reg:

    description: The first reg tuple represents the PORT module, the second tuple

      represents the GPIO module.

    maxItems: 2

  interrupts:

    maxItems: 1

  interrupt-controller: true

  "#interrupt-cells":

    const: 2

  "#gpio-cells":

    const: 2

  gpio-controller: true

  clocks:

    items:

      - description: SoC GPIO clock

      - description: SoC PORT clock

  clock-names:

    items:

      - const: gpio

      - const: port

  gpio-ranges:

    maxItems: 1

required:

  - compatible

  - reg

  - interrupts

  - interrupt-controller

  - "#interrupt-cells"

  - "#gpio-cells"

  - gpio-controller

additionalProperties: false

examples:

  - |

    #include <dt-bindings/interrupt-controller/arm-gic.h>

    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>;

    };