tjh.dev
Linux kernel mirror (for testing)
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1# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
2%YAML 1.2
3---
4$id: http://devicetree.org/schemas/interrupt-controller/hisilicon,mbigen-v2.yaml#
5$schema: http://devicetree.org/meta-schemas/core.yaml#
6
7title: Hisilicon mbigen v2
8
9maintainers:
10 - Wei Xu <xuwei5@hisilicon.com>
11
12description: >
13 Mbigen means: message based interrupt generator.
14
15 MBI is kind of msi interrupt only used on Non-PCI devices.
16
17 To reduce the wired interrupt number connected to GIC, Hisilicon designed
18 mbigen to collect and generate interrupt.
19
20 Non-pci devices can connect to mbigen and generate the interrupt by writing
21 ITS register.
22
23properties:
24 compatible:
25 const: hisilicon,mbigen-v2
26
27 reg:
28 maxItems: 1
29
30required:
31 - compatible
32 - reg
33
34additionalProperties:
35 type: object
36 additionalProperties: false
37
38 properties:
39 interrupt-controller: true
40
41 '#interrupt-cells':
42 const: 2
43
44 msi-parent:
45 maxItems: 1
46
47 num-pins:
48 description: The total number of pins implemented in this Mbigen instance.
49 $ref: /schemas/types.yaml#/definitions/uint32
50
51 required:
52 - interrupt-controller
53 - "#interrupt-cells"
54 - msi-parent
55 - num-pins
56
57examples:
58 - |
59 mbigen@c0080000 {
60 compatible = "hisilicon,mbigen-v2";
61 reg = <0xc0080000 0x10000>;
62
63 mbigen_gmac: intc_gmac {
64 interrupt-controller;
65 #interrupt-cells = <2>;
66 msi-parent = <&its_dsa 0x40b1c>;
67 num-pins = <9>;
68 };
69
70 mbigen_i2c: intc_i2c {
71 interrupt-controller;
72 #interrupt-cells = <2>;
73 msi-parent = <&its_dsa 0x40b0e>;
74 num-pins = <2>;
75 };
76 };