1 # SPDX-License-Identifier: (GPL-2.0-only OR BS 1 # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
2 %YAML 1.2 2 %YAML 1.2
3 --- 3 ---
4 $id: http://devicetree.org/schemas/interrupt-c !! 4 $id: "http://devicetree.org/schemas/interrupt-controller/loongson,liointc.yaml#"
5 $schema: http://devicetree.org/meta-schemas/co !! 5 $schema: "http://devicetree.org/meta-schemas/core.yaml#"
6 6
7 title: Loongson Local I/O Interrupt Controller 7 title: Loongson Local I/O Interrupt Controller
8 8
9 maintainers: 9 maintainers:
10 - Jiaxun Yang <jiaxun.yang@flygoat.com> 10 - Jiaxun Yang <jiaxun.yang@flygoat.com>
11 11
12 description: | 12 description: |
13 This interrupt controller is found in the Lo !! 13 This interrupt controller is found in the Loongson-3 family of chips as the primary
14 Loongson-2K series chips, as the primary pac !! 14 package interrupt controller which can route local I/O interrupt to interrupt lines
15 can route local I/O interrupt to interrupt l !! 15 of cores.
16 Be aware of the following points. <<
17 1.The Loongson-2K0500 is a single core CPU; <<
18 2.The Loongson-2K0500/2K1000 has 64 device i <<
19 need to define two nodes in dts{i} to desc <<
20 sources respectively. <<
21 16
22 allOf: 17 allOf:
23 - $ref: /schemas/interrupt-controller.yaml# 18 - $ref: /schemas/interrupt-controller.yaml#
24 19
25 properties: 20 properties:
26 compatible: 21 compatible:
27 enum: !! 22 oneOf:
28 - loongson,liointc-1.0 !! 23 - const: loongson,liointc-1.0
29 - loongson,liointc-1.0a !! 24 - const: loongson,liointc-1.0a
30 - loongson,liointc-2.0 <<
31 25
32 reg: 26 reg:
33 minItems: 1 !! 27 maxItems: 1
34 maxItems: 3 <<
35 <<
36 reg-names: <<
37 items: <<
38 - const: main <<
39 - const: isr0 <<
40 - const: isr1 <<
41 minItems: 2 <<
42 28
43 interrupt-controller: true 29 interrupt-controller: true
44 30
45 interrupts: 31 interrupts:
46 description: 32 description:
47 Interrupt source of the CPU interrupts. 33 Interrupt source of the CPU interrupts.
48 minItems: 1 34 minItems: 1
49 maxItems: 4 35 maxItems: 4
50 36
51 interrupt-names: 37 interrupt-names:
52 description: List of names for the parent 38 description: List of names for the parent interrupts.
53 items: 39 items:
54 pattern: int[0-3] !! 40 - const: int0
>> 41 - const: int1
>> 42 - const: int2
>> 43 - const: int3
55 minItems: 1 44 minItems: 1
56 maxItems: 4 45 maxItems: 4
57 46
58 '#interrupt-cells': 47 '#interrupt-cells':
59 const: 2 48 const: 2
60 49
61 loongson,parent_int_map: !! 50 'loongson,parent_int_map':
62 description: | 51 description: |
63 This property points how the children in 52 This property points how the children interrupts will be mapped into CPU
64 interrupt lines. Each cell refers to a p 53 interrupt lines. Each cell refers to a parent interrupt line from 0 to 3
65 and each bit in the cell refers to a chi 54 and each bit in the cell refers to a child interrupt from 0 to 31.
66 If a CPU interrupt line didn't connect w 55 If a CPU interrupt line didn't connect with liointc, then keep its
67 cell with zero. 56 cell with zero.
68 $ref: /schemas/types.yaml#/definitions/uin 57 $ref: /schemas/types.yaml#/definitions/uint32-array
69 minItems: 4 58 minItems: 4
70 maxItems: 4 59 maxItems: 4
71 60
72 required: 61 required:
73 - compatible 62 - compatible
74 - reg 63 - reg
75 - interrupts 64 - interrupts
76 - interrupt-names <<
77 - interrupt-controller 65 - interrupt-controller
78 - '#interrupt-cells' 66 - '#interrupt-cells'
79 - loongson,parent_int_map !! 67 - 'loongson,parent_int_map'
80 68
81 69
82 unevaluatedProperties: false 70 unevaluatedProperties: false
83 <<
84 if: <<
85 properties: <<
86 compatible: <<
87 contains: <<
88 enum: <<
89 - loongson,liointc-2.0 <<
90 <<
91 then: <<
92 properties: <<
93 reg: <<
94 minItems: 2 <<
95 maxItems: 3 <<
96 <<
97 required: <<
98 - reg-names <<
99 <<
100 else: <<
101 properties: <<
102 reg: <<
103 maxItems: 1 <<
104 71
105 examples: 72 examples:
106 - | 73 - |
107 iointc: interrupt-controller@3ff01400 { 74 iointc: interrupt-controller@3ff01400 {
108 compatible = "loongson,liointc-1.0"; 75 compatible = "loongson,liointc-1.0";
109 reg = <0x3ff01400 0x64>; 76 reg = <0x3ff01400 0x64>;
110 77
111 interrupt-controller; 78 interrupt-controller;
112 #interrupt-cells = <2>; 79 #interrupt-cells = <2>;
113 80
114 interrupt-parent = <&cpuintc>; 81 interrupt-parent = <&cpuintc>;
115 interrupts = <2>, <3>; 82 interrupts = <2>, <3>;
116 interrupt-names = "int0", "int1"; 83 interrupt-names = "int0", "int1";
117 84
118 loongson,parent_int_map = <0xf0ffffff>, 85 loongson,parent_int_map = <0xf0ffffff>, /* int0 */
119 <0x0f000000>, 86 <0x0f000000>, /* int1 */
120 <0x00000000>, 87 <0x00000000>, /* int2 */
121 <0x00000000>; 88 <0x00000000>; /* int3 */
122 89
123 }; 90 };
124 91
125 ... 92 ...
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