xref: /linux/Documentation/devicetree/bindings/bus/nvidia,tegra210-aconnect.yaml (revision ae22a94997b8a03dcb3c922857c203246711f9d4) 
1# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
2%YAML 1.2
3---
4$id: http://devicetree.org/schemas/bus/nvidia,tegra210-aconnect.yaml#
5$schema: http://devicetree.org/meta-schemas/core.yaml#
6
7title: NVIDIA Tegra ACONNECT Bus
8
9description: |
10  The Tegra ACONNECT bus is an AXI switch which is used to connect various
11  components inside the Audio Processing Engine (APE). All CPU accesses to
12  the APE subsystem go through the ACONNECT via an APB to AXI wrapper. All
13  devices accessed via the ACONNECT are described by child-nodes.
14
15maintainers:
16  - Jon Hunter <jonathanh@nvidia.com>
17
18properties:
19  compatible:
20    oneOf:
21      - const: nvidia,tegra210-aconnect
22      - items:
23          - enum:
24              - nvidia,tegra234-aconnect
25              - nvidia,tegra186-aconnect
26              - nvidia,tegra194-aconnect
27          - const: nvidia,tegra210-aconnect
28
29  clocks:
30    items:
31      - description: Must contain the entry for APE clock
32      - description: Must contain the entry for APE interface clock
33
34  clock-names:
35    items:
36      - const: ape
37      - const: apb2ape
38
39  power-domains:
40    maxItems: 1
41
42  "#address-cells":
43    enum: [ 1, 2 ]
44
45  "#size-cells":
46    enum: [ 1, 2 ]
47
48  ranges: true
49
50patternProperties:
51  "@[0-9a-f]+$":
52    type: object
53
54required:
55  - compatible
56  - clocks
57  - clock-names
58  - power-domains
59  - "#address-cells"
60  - "#size-cells"
61  - ranges
62
63additionalProperties: false
64
65examples:
66  - |
67    #include<dt-bindings/clock/tegra210-car.h>
68
69    aconnect@702c0000 {
70        compatible = "nvidia,tegra210-aconnect";
71        clocks = <&tegra_car TEGRA210_CLK_APE>,
72                 <&tegra_car TEGRA210_CLK_APB2APE>;
73        clock-names = "ape", "apb2ape";
74        power-domains = <&pd_audio>;
75
76        #address-cells = <1>;
77        #size-cells = <1>;
78        ranges = <0x702c0000 0x702c0000 0x00040000>;
79
80        // Child device nodes follow ...
81    };
82
83...
84