87 lines
2.3 KiB
YAML
87 lines
2.3 KiB
YAML
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# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
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%YAML 1.2
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---
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$id: http://devicetree.org/schemas/soundwire/soundwire-controller.yaml#
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$schema: http://devicetree.org/meta-schemas/core.yaml#
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title: SoundWire Controller Generic Binding
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maintainers:
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- Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
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- Vinod Koul <vkoul@kernel.org>
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description: |
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SoundWire busses can be described with a node for the SoundWire controller
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device and a set of child nodes for each SoundWire slave on the bus.
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properties:
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$nodename:
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pattern: "^soundwire(@.*)?$"
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"#address-cells":
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const: 2
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"#size-cells":
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const: 0
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patternProperties:
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"^.*@[0-9a-f],[0-9a-f]$":
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type: object
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properties:
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compatible:
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pattern: "^sdw[0-9a-f]{1}[0-9a-f]{4}[0-9a-f]{4}[0-9a-f]{2}$"
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description: Is the textual representation of SoundWire Enumeration
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address. compatible string should contain SoundWire Version ID,
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Manufacturer ID, Part ID and Class ID in order and shall be in
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lower-case hexadecimal with leading zeroes.
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Valid sizes of these fields are
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Version ID is 1 nibble, number '0x1' represents SoundWire 1.0
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and '0x2' represents SoundWire 1.1 and so on.
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MFD is 4 nibbles
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PID is 4 nibbles
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CID is 2 nibbles
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More Information on detail of encoding of these fields can be
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found in MIPI Alliance DisCo & SoundWire 1.0 Specifications.
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reg:
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maxItems: 1
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description:
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Link ID followed by Instance ID of SoundWire Device Address.
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required:
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- compatible
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- reg
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required:
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- "#address-cells"
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- "#size-cells"
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additionalProperties: true
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examples:
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- |
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soundwire@c2d0000 {
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#address-cells = <2>;
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#size-cells = <0>;
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reg = <0x0c2d0000 0x2000>;
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speaker@0,1 {
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compatible = "sdw10217201000";
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reg = <0 1>;
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powerdown-gpios = <&wcdpinctrl 2 0>;
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#thermal-sensor-cells = <0>;
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#sound-dai-cells = <0>;
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};
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speaker@0,2 {
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compatible = "sdw10217201000";
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reg = <0 2>;
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powerdown-gpios = <&wcdpinctrl 2 0>;
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#thermal-sensor-cells = <0>;
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#sound-dai-cells = <0>;
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};
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};
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...
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