dt-bindings: interrupt-controller: Convert Amlogic Meson GPIO interrupt controller binding

Amlogic meson GPIO interrupt controller

Meson SoCs contains an interrupt controller which is able to watch the SoC

pads and generate an interrupt on edge or level. The controller is essentially

a 256 pads to 8 GIC interrupt multiplexer, with a filter block to select edge

or level and polarity. It does not expose all 256 mux inputs because the

documentation shows that the upper part is not mapped to any pad. The actual

number of interrupt exposed depends on the SoC.

Required properties:

- compatible : must have "amlogic,meson8-gpio-intc" and either

    "amlogic,meson8-gpio-intc" for meson8 SoCs (S802) or

    "amlogic,meson8b-gpio-intc" for meson8b SoCs (S805) or

    "amlogic,meson-gxbb-gpio-intc" for GXBB SoCs (S905) or

    "amlogic,meson-gxl-gpio-intc" for GXL SoCs (S905X, S912)

    "amlogic,meson-axg-gpio-intc" for AXG SoCs (A113D, A113X)

    "amlogic,meson-g12a-gpio-intc" for G12A SoCs (S905D2, S905X2, S905Y2)

    "amlogic,meson-sm1-gpio-intc" for SM1 SoCs (S905D3, S905X3, S905Y3)

    "amlogic,meson-a1-gpio-intc" for A1 SoCs (A113L)

    "amlogic,meson-s4-gpio-intc" for S4 SoCs (S802X2, S905Y4, S805X2G, S905W2)

- 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 must be 2.

- meson,channel-interrupts: Array with the 8 upstream hwirq numbers. These

   are the hwirqs used on the parent interrupt controller.

Example:

gpio_interrupt: interrupt-controller@9880 {

	compatible = "amlogic,meson-gxbb-gpio-intc",

		     "amlogic,meson-gpio-intc";

	reg = <0x0 0x9880 0x0 0x10>;

	interrupt-controller;

	#interrupt-cells = <2>;

	meson,channel-interrupts = <64 65 66 67 68 69 70 71>;

};

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

%YAML 1.2

---

$id: http://devicetree.org/schemas/interrupt-controller/amlogic,meson-gpio-intc.yaml#

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

title: Amlogic Meson GPIO interrupt controller

maintainers:

  - Heiner Kallweit <hkallweit1@gmail.com>

description: |

  Meson SoCs contains an interrupt controller which is able to watch the SoC

  pads and generate an interrupt on edge or level. The controller is essentially

  a 256 pads to 8 or 12 GIC interrupt multiplexer, with a filter block to select

  edge or level and polarity. It does not expose all 256 mux inputs because the

  documentation shows that the upper part is not mapped to any pad. The actual

  number of interrupts exposed depends on the SoC.

allOf:

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

properties:

  compatible:

    oneOf:

      - const: amlogic,meson-gpio-intc

      - items:

          - enum:

              - amlogic,meson8-gpio-intc

              - amlogic,meson8b-gpio-intc

              - amlogic,meson-gxbb-gpio-intc

              - amlogic,meson-gxl-gpio-intc

              - amlogic,meson-axg-gpio-intc

              - amlogic,meson-g12a-gpio-intc

              - amlogic,meson-sm1-gpio-intc

              - amlogic,meson-a1-gpio-intc

              - amlogic,meson-s4-gpio-intc

          - const: amlogic,meson-gpio-intc

  reg:

    maxItems: 1

  interrupt-controller: true

  "#interrupt-cells":

    const: 2

  amlogic,channel-interrupts:

    description: Array with the upstream hwirq numbers

    minItems: 8

    maxItems: 12

    $ref: /schemas/types.yaml#/definitions/uint32-array

required:

  - compatible

  - reg

  - interrupt-controller

  - "#interrupt-cells"

  - amlogic,channel-interrupts

additionalProperties: false

examples:

  - |

    interrupt-controller@9880 {

      compatible = "amlogic,meson-gxbb-gpio-intc",

                   "amlogic,meson-gpio-intc";

      reg = <0x9880 0x10>;

      interrupt-controller;

      #interrupt-cells = <2>;

      amlogic,channel-interrupts = <64 65 66 67 68 69 70 71>;

    };