xref: /freebsd/sys/contrib/device-tree/Bindings/interrupt-controller/atmel,aic.yaml (revision 01950c46b8155250f64374fb72fc11faa44bf099)

# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
%YAML 1.2
---
$id: http://devicetree.org/schemas/interrupt-controller/atmel,aic.yaml#
$schema: http://devicetree.org/meta-schemas/core.yaml#

title: Advanced Interrupt Controller (AIC)

maintainers:
  - Nicolas Ferre <nicolas.ferre@microchip.com>
  - Dharma balasubiramani <dharma.b@microchip.com>

description:
  The Advanced Interrupt Controller (AIC) is an 8-level priority, individually
  maskable, vectored interrupt controller providing handling of up to one
  hundred and twenty-eight interrupt sources.

properties:
  compatible:
    enum:
      - atmel,at91rm9200-aic
      - atmel,sama5d2-aic
      - atmel,sama5d3-aic
      - atmel,sama5d4-aic
      - microchip,sam9x60-aic

  reg:
    maxItems: 1

  interrupt-controller: true

  "#interrupt-cells":
    const: 3
    description: |
      The 1st cell is the IRQ number (Peripheral IDentifier on datasheet).
      The 2nd cell specifies 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: 1, 2, 3, 4, 8.
        Default for internal sources: 4 (active high).
      The 3rd cell specifies irq priority from 0 (lowest) to 7 (highest).

  interrupts:
    maxItems: 1

  atmel,external-irqs:
    $ref: /schemas/types.yaml#/definitions/uint32-array
    description: u32 array of external irqs.

allOf:
  - $ref: /schemas/interrupt-controller.yaml#
  - if:
      properties:
        compatible:
          contains:
            const: atmel,at91rm9200-aic
    then:
      properties:
        atmel,external-irqs:
          minItems: 1
          maxItems: 7
    else:
      properties:
        atmel,external-irqs:
          minItems: 1
          maxItems: 1

required:
  - compatible
  - reg
  - interrupt-controller
  - "#interrupt-cells"
  - atmel,external-irqs

unevaluatedProperties: false

examples:
  - |
    interrupt-controller@fffff000 {
      compatible = "atmel,at91rm9200-aic";
      reg = <0xfffff000 0x200>;
      interrupt-controller;
      #interrupt-cells = <3>;
      atmel,external-irqs = <31>;
    };
...