xref: /linux/Documentation/devicetree/bindings/interrupt-controller/atmel,aic.yaml (revision 7f71507851fc7764b36a3221839607d3a45c2025) 
1# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
2%YAML 1.2
3---
4$id: http://devicetree.org/schemas/interrupt-controller/atmel,aic.yaml#
5$schema: http://devicetree.org/meta-schemas/core.yaml#
6
7title: Advanced Interrupt Controller (AIC)
8
9maintainers:
10  - Nicolas Ferre <nicolas.ferre@microchip.com>
11  - Dharma balasubiramani <dharma.b@microchip.com>
12
13description:
14  The Advanced Interrupt Controller (AIC) is an 8-level priority, individually
15  maskable, vectored interrupt controller providing handling of up to one
16  hundred and twenty-eight interrupt sources.
17
18properties:
19  compatible:
20    enum:
21      - atmel,at91rm9200-aic
22      - atmel,sama5d2-aic
23      - atmel,sama5d3-aic
24      - atmel,sama5d4-aic
25      - microchip,sam9x60-aic
26      - microchip,sam9x7-aic
27
28  reg:
29    maxItems: 1
30
31  interrupt-controller: true
32
33  "#interrupt-cells":
34    const: 3
35    description: |
36      The 1st cell is the IRQ number (Peripheral IDentifier on datasheet).
37      The 2nd cell specifies flags:
38        bits[3:0] trigger type and level flags:
39          1 = low-to-high edge triggered.
40          2 = high-to-low edge triggered.
41          4 = active high level-sensitive.
42          8 = active low level-sensitive.
43        Valid combinations: 1, 2, 3, 4, 8.
44        Default for internal sources: 4 (active high).
45      The 3rd cell specifies irq priority from 0 (lowest) to 7 (highest).
46
47  interrupts:
48    maxItems: 1
49
50  atmel,external-irqs:
51    $ref: /schemas/types.yaml#/definitions/uint32-array
52    description: u32 array of external irqs.
53
54allOf:
55  - $ref: /schemas/interrupt-controller.yaml#
56  - if:
57      properties:
58        compatible:
59          contains:
60            const: atmel,at91rm9200-aic
61    then:
62      properties:
63        atmel,external-irqs:
64          minItems: 1
65          maxItems: 7
66    else:
67      properties:
68        atmel,external-irqs:
69          minItems: 1
70          maxItems: 1
71
72required:
73  - compatible
74  - reg
75  - interrupt-controller
76  - "#interrupt-cells"
77  - atmel,external-irqs
78
79unevaluatedProperties: false
80
81examples:
82  - |
83    interrupt-controller@fffff000 {
84      compatible = "atmel,at91rm9200-aic";
85      reg = <0xfffff000 0x200>;
86      interrupt-controller;
87      #interrupt-cells = <3>;
88      atmel,external-irqs = <31>;
89    };
90...
91