[PATCH v4 08/10] dt-bindings: sound: Add support for QMC audio

Herve Codina
2023-01-26T08:35:11Z

The QMC (QUICC mutichannel controller) is a controller
present in some PowerQUICC SoC such as MPC885.
The QMC audio is an ASoC component that uses the QMC
controller to transfer the audio data.

Signed-off-by: Herve Codina <herve.codina@bootlin.com>
Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
---
.../bindings/sound/fsl,qmc-audio.yaml | 117 ++++++++++++++++++
1 file changed, 117 insertions(+)
create mode 100644 Documentation/devicetree/bindings/sound/fsl,qmc-audio.yaml

diff --git a/Documentation/devicetree/bindings/sound/fsl,qmc-audio.yaml b/Documentation/devicetree/bindings/sound/fsl,qmc-audio.yaml
new file mode 100644
index 000000000000..ff5cd9241941
--- /dev/null
+++ b/Documentation/devicetree/bindings/sound/fsl,qmc-audio.yaml
@@ -0,0 +1,117 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/sound/fsl,qmc-audio.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: QMC audio
+
+maintainers:
+ - Herve Codina <herve.codina@bootlin.com>
+
+description: |
+ The QMC audio is an ASoC component which uses QMC (QUICC Multichannel
+ Controller) channels to transfer the audio data.
+ It provides as many DAI as the number of QMC channel used.
+
+allOf:
+ - $ref: dai-common.yaml#
+
+properties:
+ compatible:
+ const: fsl,qmc-audio
+
+ '#address-cells':
+ const: 1
+ '#size-cells':
+ const: 0
+ '#sound-dai-cells':
+ const: 1
+
+patternProperties:
+ '^dai@([0-9]|[1-5][0-9]|6[0-3])$':
+ description:
+ A DAI managed by this controller
+ type: object
+
+ properties:
+ reg:
+ minimum: 0
+ maximum: 63
+ description:
+ The DAI number
+
+ fsl,qmc-chan:
+ $ref: /schemas/types.yaml#/definitions/phandle-array
+ items:
+ - items:
+ - description: phandle to QMC node
+ - description: Channel number
+ description:
+ Should be a phandle/number pair. The phandle to QMC node and the QMC
+ channel to use for this DAI.
+
+ required:
+ - reg
+ - fsl,qmc-chan
+
+required:
+ - compatible
+ - '#address-cells'
+ - '#size-cells'
+ - '#sound-dai-cells'
+
+additionalProperties: false
+
+examples:
+ - |
+ audio_controller: audio-controller {
+ compatible = "fsl,qmc-audio";
+ #address-cells = <1>;
+ #size-cells = <0>;
+ #sound-dai-cells = <1>;
+ dai@16 {
+ reg = <16>;
+ fsl,qmc-chan = <&qmc 16>;
+ };
+ dai@17 {
+ reg = <17>;
+ fsl,qmc-chan = <&qmc 17>;
+ };
+ };
+
+ sound {
+ compatible = "simple-audio-card";
+ #address-cells = <1>;
+ #size-cells = <0>;
+ simple-audio-card,dai-link@0 {
+ reg = <0>;
+ format = "dsp_b";
+ cpu {
+ sound-dai = <&audio_controller 16>;
+ };
+ codec {
+ sound-dai = <&codec1>;
+ dai-tdm-slot-num = <4>;
+ dai-tdm-slot-width = <8>;
+ /* TS 3, 5, 7, 9 */
+ dai-tdm-slot-tx-mask = <0 0 0 1 0 1 0 1 0 1>;
+ dai-tdm-slot-rx-mask = <0 0 0 1 0 1 0 1 0 1>;
+ };
+ };
+ simple-audio-card,dai-link@1 {
+ reg = <1>;
+ format = "dsp_b";
+ cpu {
+ sound-dai = <&audio_controller 17>;
+ };
+ codec {
+ sound-dai = <&codec2>;
+ dai-tdm-slot-num = <4>;
+ dai-tdm-slot-width = <8>;
+ /* TS 2, 4, 6, 8 */
+ dai-tdm-slot-tx-mask = <0 0 1 0 1 0 1 0 1>;
+ dai-tdm-slot-rx-mask = <0 0 1 0 1 0 1 0 1>;
+ };
+ };
+ };
--
2.39.0