xref: /linux/Documentation/devicetree/bindings/interrupt-controller/nvidia,tegra20-ictlr.yaml (revision 53597deca0e38c30e6cd4ba2114fa42d2bcd85bb) 
1# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
2%YAML 1.2
3---
4$id: http://devicetree.org/schemas/interrupt-controller/nvidia,tegra20-ictlr.yaml#
5$schema: http://devicetree.org/meta-schemas/core.yaml#
6
7title: NVIDIA Tegra20 Legacy Interrupt Controller
8
9maintainers:
10  - Thierry Reding <treding@nvidia.com>
11  - Jonathan Hunter <jonathanh@nvidia.com>
12
13description: >
14  All Tegra SoCs contain a legacy interrupt controller that routes interrupts to
15  the GIC, and also serves as a wakeup source. It is also referred to as
16  "ictlr", hence the name of the binding.
17
18  The HW block exposes a number of interrupt controllers, each implementing a
19  set of 32 interrupts.
20
21  Notes:
22    - Because this HW ultimately routes interrupts to the GIC, the
23      interrupt specifier must be that of the GIC.
24    - Only SPIs can use the ictlr as an interrupt parent. SGIs and PPIs
25      are explicitly forbidden.
26
27properties:
28  compatible:
29    oneOf:
30      - items:
31          - enum:
32              - nvidia,tegra114-ictlr
33              - nvidia,tegra124-ictlr
34          - const: nvidia,tegra30-ictlr
35      - enum:
36          - nvidia,tegra20-ictlr
37          - nvidia,tegra30-ictlr
38          - nvidia,tegra210-ictlr
39
40  reg:
41    description: Each entry is a block of 32 interrupts
42    minItems: 4
43    maxItems: 6
44
45  interrupt-controller: true
46
47  '#interrupt-cells':
48    const: 3
49
50required:
51  - compatible
52  - reg
53  - interrupt-controller
54  - '#interrupt-cells'
55
56additionalProperties: false
57
58allOf:
59  - if:
60      properties:
61        compatible:
62          contains:
63            const: nvidia,tegra20-ictlr
64    then:
65      properties:
66        reg:
67          maxItems: 4
68
69  - if:
70      properties:
71        compatible:
72          contains:
73            const: nvidia,tegra30-ictlr
74    then:
75      properties:
76        reg:
77          minItems: 5
78          maxItems: 5
79
80  - if:
81      properties:
82        compatible:
83          contains:
84            const: nvidia,tegra210-ictlr
85    then:
86      properties:
87        reg:
88          minItems: 6
89          maxItems: 6
90
91examples:
92  - |
93    interrupt-controller@60004000 {
94        compatible = "nvidia,tegra20-ictlr";
95        reg = <0x60004000 64>,
96              <0x60004100 64>,
97              <0x60004200 64>,
98              <0x60004300 64>;
99        interrupt-controller;
100        #interrupt-cells = <3>;
101    };
102