tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
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...