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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...