xref: /linux/Documentation/devicetree/bindings/interrupt-controller/loongson,liointc.yaml (revision bbcd53c960713507ae764bf81970651b5577b95a) 
1# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
2%YAML 1.2
3---
4$id: "http://devicetree.org/schemas/interrupt-controller/loongson,liointc.yaml#"
5$schema: "http://devicetree.org/meta-schemas/core.yaml#"
6
7title: Loongson Local I/O Interrupt Controller
8
9maintainers:
10  - Jiaxun Yang <jiaxun.yang@flygoat.com>
11
12description: |
13  This interrupt controller is found in the Loongson-3 family of chips and
14  Loongson-2K1000 chip, as the primary package interrupt controller which
15  can route local I/O interrupt to interrupt lines of cores.
16
17allOf:
18  - $ref: /schemas/interrupt-controller.yaml#
19
20properties:
21  compatible:
22    oneOf:
23      - const: loongson,liointc-1.0
24      - const: loongson,liointc-1.0a
25      - const: loongson,liointc-2.0
26
27  reg:
28    minItems: 1
29    maxItems: 3
30
31  reg-names:
32    items:
33      - const: main
34      - const: isr0
35      - const: isr1
36
37  interrupt-controller: true
38
39  interrupts:
40    description:
41      Interrupt source of the CPU interrupts.
42    minItems: 1
43    maxItems: 4
44
45  interrupt-names:
46    description: List of names for the parent interrupts.
47    items:
48      - const: int0
49      - const: int1
50      - const: int2
51      - const: int3
52    minItems: 1
53    maxItems: 4
54
55  '#interrupt-cells':
56    const: 2
57
58  'loongson,parent_int_map':
59    description: |
60      This property points how the children interrupts will be mapped into CPU
61      interrupt lines. Each cell refers to a parent interrupt line from 0 to 3
62      and each bit in the cell refers to a child interrupt from 0 to 31.
63      If a CPU interrupt line didn't connect with liointc, then keep its
64      cell with zero.
65    $ref: /schemas/types.yaml#/definitions/uint32-array
66    minItems: 4
67    maxItems: 4
68
69required:
70  - compatible
71  - reg
72  - interrupts
73  - interrupt-controller
74  - '#interrupt-cells'
75  - 'loongson,parent_int_map'
76
77
78unevaluatedProperties: false
79
80if:
81  properties:
82    compatible:
83      contains:
84        enum:
85          - loongson,liointc-2.0
86
87then:
88  properties:
89    reg:
90      minItems: 3
91
92  required:
93    - reg-names
94
95else:
96  properties:
97    reg:
98      maxItems: 1
99
100examples:
101  - |
102    iointc: interrupt-controller@3ff01400 {
103      compatible = "loongson,liointc-1.0";
104      reg = <0x3ff01400 0x64>;
105
106      interrupt-controller;
107      #interrupt-cells = <2>;
108
109      interrupt-parent = <&cpuintc>;
110      interrupts = <2>, <3>;
111      interrupt-names = "int0", "int1";
112
113      loongson,parent_int_map = <0xf0ffffff>, /* int0 */
114                                <0x0f000000>, /* int1 */
115                                <0x00000000>, /* int2 */
116                                <0x00000000>; /* int3 */
117
118    };
119
120...
121