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# 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>;
};
...
|
