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

NVIDIA Tegra GPIO controller

Required properties:

- compatible : "nvidia,tegra<chip>-gpio"

- reg : Physical base address and length of the controller's registers.

- interrupts : The interrupt outputs from the controller. For Tegra20,

  there should be 7 interrupts specified, and for Tegra30, there should

  be 8 interrupts specified.

- #gpio-cells : Should be two. The first cell is the pin number and the

  second cell is used to specify optional parameters:

  - bit 0 specifies polarity (0 for normal, 1 for inverted)

- gpio-controller : Marks the device node as a GPIO controller.

- #interrupt-cells : Should be 2.

  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.

      Valid combinations are 1, 2, 3, 4, 8.

- interrupt-controller : Marks the device node as an interrupt controller.

Example:

gpio: gpio@6000d000 {

	compatible = "nvidia,tegra20-gpio";

	reg = < 0x6000d000 0x1000 >;

	interrupts = < 0 32 0x04

		       0 33 0x04

		       0 34 0x04

		       0 35 0x04

		       0 55 0x04

		       0 87 0x04

		       0 89 0x04 >;

	#gpio-cells = <2>;

	gpio-controller;

	#interrupt-cells = <2>;

	interrupt-controller;

};

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

%YAML 1.2

---

$id: http://devicetree.org/schemas/gpio/nvidia,tegra20-gpio.yaml#

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

title: NVIDIA Tegra GPIO Controller (Tegra20 - Tegra210)

maintainers:

  - Thierry Reding <thierry.reding@gmail.com>

  - Jon Hunter <jonathanh@nvidia.com>

properties:

  compatible:

    oneOf:

      - enum:

          - nvidia,tegra20-gpio

          - nvidia,tegra30-gpio

      - items:

          - enum:

              - nvidia,tegra114-gpio

              - nvidia,tegra124-gpio

              - nvidia,tegra210-gpio

          - const: nvidia,tegra30-gpio

  reg:

    maxItems: 1

  interrupts:

    description: The interrupt outputs from the controller. For Tegra20,

      there should be 7 interrupts specified, and for Tegra30, there should

      be 8 interrupts specified.

  "#gpio-cells":

    description: The first cell is the pin number and the second cell is used

      to specify the GPIO polarity (0 = active high, 1 = active low).

    const: 2

  gpio-controller: true

  gpio-ranges:

    maxItems: 1

  "#interrupt-cells":

    description: |

      Should be 2. 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.

      Valid combinations are 1, 2, 3, 4, 8.

    const: 2

  interrupt-controller: true

allOf:

  - if:

      properties:

        compatible:

          contains:

            const: nvidia,tegra30-gpio

    then:

      properties:

        interrupts:

          minItems: 8

          maxItems: 8

    else:

      properties:

        interrupts:

          minItems: 7

          maxItems: 7

required:

  - compatible

  - reg

  - interrupts

  - "#gpio-cells"

  - gpio-controller

  - "#interrupt-cells"

  - interrupt-controller

additionalProperties:

  type: object

  required:

    - gpio-hog

examples:

  - |

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

    gpio: gpio@6000d000 {

        compatible = "nvidia,tegra20-gpio";

        reg = <0x6000d000 0x1000>;

        interrupts = <GIC_SPI 32 IRQ_TYPE_LEVEL_HIGH>,

                     <GIC_SPI 33 IRQ_TYPE_LEVEL_HIGH>,

                     <GIC_SPI 34 IRQ_TYPE_LEVEL_HIGH>,

                     <GIC_SPI 35 IRQ_TYPE_LEVEL_HIGH>,

                     <GIC_SPI 55 IRQ_TYPE_LEVEL_HIGH>,

                     <GIC_SPI 87 IRQ_TYPE_LEVEL_HIGH>,

                     <GIC_SPI 89 IRQ_TYPE_LEVEL_HIGH>;

        #gpio-cells = <2>;

        gpio-controller;

        #interrupt-cells = <2>;

        interrupt-controller;

    };