dt-bindings: irq: Convert Allwinner NMI Controller to a schema

# SPDX-License-Identifier: GPL-2.0

%YAML 1.2

---

$id: http://devicetree.org/schemas/interrupt-controller/allwinner,sun7i-a20-sc-nmi.yaml#

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

title: Allwinner A20 Non-Maskable Interrupt Controller Device Tree Bindings

maintainers:

  - Chen-Yu Tsai <wens@csie.org>

  - Maxime Ripard <maxime.ripard@bootlin.com>

allOf:

  - $ref: /schemas/interrupt-controller.yaml#

properties:

  "#interrupt-cells":

    const: 2

    description:

      The first cell is the IRQ number, the second cell the trigger

      type as defined in interrupt.txt in this directory.

  compatible:

    oneOf:

      - const: allwinner,sun6i-a31-r-intc

      - const: allwinner,sun6i-a31-sc-nmi

        deprecated: true

      - const: allwinner,sun7i-a20-sc-nmi

      - items:

        - const: allwinner,sun8i-a83t-r-intc

        - const: allwinner,sun6i-a31-r-intc

      - const: allwinner,sun9i-a80-sc-nmi

      - items:

        - const: allwinner,sun50i-a64-r-intc

        - const: allwinner,sun6i-a31-r-intc

      - items:

        - const: allwinner,sun50i-h6-r-intc

        - const: allwinner,sun6i-a31-r-intc

  reg:

    maxItems: 1

  interrupts:

    maxItems: 1

  interrupt-controller: true

required:

  - "#interrupt-cells"

  - compatible

  - reg

  - interrupts

  - interrupt-controller

# FIXME: We should set it, but it would report all the generic

# properties as additional properties.

# additionalProperties: false

examples:

  - |

    interrupt-controller@1c00030 {

        compatible = "allwinner,sun7i-a20-sc-nmi";

        interrupt-controller;

        #interrupt-cells = <2>;

        reg = <0x01c00030 0x0c>;

        interrupt-parent = <&gic>;

        interrupts = <0 0 4>;

    };

...

Allwinner Sunxi NMI Controller

==============================

Required properties:

- compatible : should be one of the following:

  - "allwinner,sun7i-a20-sc-nmi"

  - "allwinner,sun6i-a31-sc-nmi" (deprecated)

  - "allwinner,sun6i-a31-r-intc"

  - "allwinner,sun9i-a80-nmi"

- reg : Specifies base physical address and size of the registers.

- interrupt-controller : Identifies the node as an interrupt controller

- #interrupt-cells : Specifies the number of cells needed to encode an

  interrupt source. The value shall be 2. The first cell is the IRQ number, the

  second cell the trigger type as defined in interrupt.txt in this directory.

- interrupts: Specifies the interrupt line (NMI) which is handled by

  the interrupt controller in the parent controller's notation. This value

  shall be the NMI.

Example:

sc-nmi-intc@1c00030 {

	compatible = "allwinner,sun7i-a20-sc-nmi";

	interrupt-controller;

	#interrupt-cells = <2>;

	reg = <0x01c00030 0x0c>;

	interrupt-parent = <&gic>;

	interrupts = <0 0 4>;

};