Documentation/devicetree/bindings/interrupt-controller/atmel,aic.yaml

Source file repositories/reference/linux-study-clean/Documentation/devicetree/bindings/interrupt-controller/atmel,aic.yaml

File Facts

System
Linux kernel
Corpus path
Documentation/devicetree/bindings/interrupt-controller/atmel,aic.yaml
Extension
.yaml
Size
2261 bytes
Lines
91
Domain
Support Tooling And Documentation
Bucket
Documentation
Inferred role
Support Tooling And Documentation: configuration, schema, or hardware description
Status
atlas-only

Why This File Exists

Repository support layer: documentation, build tooling, samples, user-space helper tools, generated initramfs support, licenses, and validation utilities.

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Annotated Snippet

# 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
      - microchip,sam9x7-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

Annotation

Implementation Notes