1 # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
2 %YAML 1.2
3 ---
4 $id: http://devicetree.org/schemas/soundwire/soundwire-controller.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
6
7 title: SoundWire Controller Common Properties
8
9 maintainers:
10 - Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
11 - Vinod Koul <vkoul@kernel.org>
12
13 description: |
14 SoundWire busses can be described with a node for the SoundWire controller
15 device and a set of child nodes for each SoundWire slave on the bus.
16
17 properties:
18 $nodename:
19 pattern: "^soundwire(@.*)?$"
20
21 "#address-cells":
22 const: 2
23
24 "#size-cells":
25 const: 0
26
27 patternProperties:
28 "^.*@[0-9a-f],[0-9a-f]$":
29 type: object
30
31 properties:
32 compatible:
33 pattern: "^sdw[0-9a-f]{1}[0-9a-f]{4}[0-9a-f]{4}[0-9a-f]{2}$"
34 description: Is the textual representation of SoundWire Enumeration
35 address. compatible string should contain SoundWire Version ID,
36 Manufacturer ID, Part ID and Class ID in order and shall be in
37 lower-case hexadecimal with leading zeroes.
38 Valid sizes of these fields are
39 Version ID is 1 nibble, number '0x1' represents SoundWire 1.0
40 and '0x2' represents SoundWire 1.1 and so on.
41 MFD is 4 nibbles
42 PID is 4 nibbles
43 CID is 2 nibbles
44 More Information on detail of encoding of these fields can be
45 found in MIPI Alliance DisCo & SoundWire 1.0 Specifications.
46
47 reg:
48 maxItems: 1
49 description:
50 Link ID followed by Instance ID of SoundWire Device Address.
51
52 required:
53 - compatible
54 - reg
55
56 required:
57 - "#address-cells"
58 - "#size-cells"
59
60 additionalProperties: true
61
62 examples:
63 - |
64 soundwire@c2d0000 {
65 #address-cells = <2>;
66 #size-cells = <0>;
67 reg = <0x0c2d0000 0x2000>;
68
69 speaker@0,1 {
70 compatible = "sdw10217201000";
71 reg = <0 1>;
72 powerdown-gpios = <&wcdpinctrl 2 0>;
73 #thermal-sensor-cells = <0>;
74 #sound-dai-cells = <0>;
75 };
76
77 speaker@0,2 {
78 compatible = "sdw10217201000";
79 reg = <0 2>;
80 powerdown-gpios = <&wcdpinctrl 2 0>;
81 #thermal-sensor-cells = <0>;
82 #sound-dai-cells = <0>;
83 };
84 };
85
86 ...
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