1 # SPDX-License-Identifier: GPL-2.0
2 %YAML 1.2
3 ---
4 $id: http://devicetree.org/schemas/interrupt-controller/samsung,exynos4210-combiner.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
6
7 title: Samsung Exynos SoC Interrupt Combiner Controller
8
9 maintainers:
10 - Krzysztof Kozlowski <krzk@kernel.org>
11
12 description: |
13 Samsung's Exynos4 architecture includes a interrupt combiner controller which
14 can combine interrupt sources as a group and provide a single interrupt
15 request for the group. The interrupt request from each group are connected to
16 a parent interrupt controller, such as GIC in case of Exynos4210.
17
18 The interrupt combiner controller consists of multiple combiners. Up to eight
19 interrupt sources can be connected to a combiner. The combiner outputs one
20 combined interrupt for its eight interrupt sources. The combined interrupt is
21 usually connected to a parent interrupt controller.
22
23 A single node in the device tree is used to describe the interrupt combiner
24 controller module (which includes multiple combiners). A combiner in the
25 interrupt controller module shares config/control registers with other
26 combiners. For example, a 32-bit interrupt enable/disable config register can
27 accommodate up to 4 interrupt combiners (with each combiner supporting up to
28 8 interrupt sources).
29
30 allOf:
31 - $ref: /schemas/interrupt-controller.yaml#
32
33 properties:
34 compatible:
35 const: samsung,exynos4210-combiner
36
37 interrupt-controller: true
38
39 interrupts:
40 minItems: 8
41 maxItems: 32
42
43 "#interrupt-cells":
44 description: |
45 The meaning of the cells are:
46 * First Cell: Combiner Group Number.
47 * Second Cell: Interrupt number within the group.
48 const: 2
49
50 reg:
51 maxItems: 1
52
53 samsung,combiner-nr:
54 description: |
55 The number of interrupt combiners supported. Should match number
56 of interrupts set in "interrupts" property.
57 $ref: /schemas/types.yaml#/definitions/uint32
58 minimum: 8
59 maximum: 32
60 default: 16
61
62 required:
63 - compatible
64 - interrupt-controller
65 - interrupts
66 - "#interrupt-cells"
67 - reg
68
69 additionalProperties: false
70
71 examples:
72 - |
73 #include <dt-bindings/interrupt-controller/arm-gic.h>
74
75 interrupt-controller@10440000 {
76 compatible = "samsung,exynos4210-combiner";
77 interrupt-controller;
78 #interrupt-cells = <2>;
79 reg = <0x10440000 0x1000>;
80 interrupts = <GIC_SPI 0 IRQ_TYPE_LEVEL_HIGH>,
81 <GIC_SPI 1 IRQ_TYPE_LEVEL_HIGH>,
82 <GIC_SPI 2 IRQ_TYPE_LEVEL_HIGH>,
83 <GIC_SPI 3 IRQ_TYPE_LEVEL_HIGH>,
84 <GIC_SPI 4 IRQ_TYPE_LEVEL_HIGH>,
85 <GIC_SPI 5 IRQ_TYPE_LEVEL_HIGH>,
86 <GIC_SPI 6 IRQ_TYPE_LEVEL_HIGH>,
87 <GIC_SPI 7 IRQ_TYPE_LEVEL_HIGH>,
88 <GIC_SPI 8 IRQ_TYPE_LEVEL_HIGH>,
89 <GIC_SPI 9 IRQ_TYPE_LEVEL_HIGH>,
90 <GIC_SPI 10 IRQ_TYPE_LEVEL_HIGH>,
91 <GIC_SPI 11 IRQ_TYPE_LEVEL_HIGH>,
92 <GIC_SPI 12 IRQ_TYPE_LEVEL_HIGH>,
93 <GIC_SPI 13 IRQ_TYPE_LEVEL_HIGH>,
94 <GIC_SPI 14 IRQ_TYPE_LEVEL_HIGH>,
95 <GIC_SPI 15 IRQ_TYPE_LEVEL_HIGH>;
96 };
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