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    Subject[RFC PATCH v2 1/5] dt-bindings: sound: Add Apple MCA I2S transceiver
    Date
    Add binding schema for MCA I2S transceiver found on Apple M1 and other
    chips.

    Signed-off-by: Martin Povišer <povik+lin@cutebit.org>
    ---
    .../devicetree/bindings/sound/apple,mca.yaml | 102 ++++++++++++++++++
    1 file changed, 102 insertions(+)
    create mode 100644 Documentation/devicetree/bindings/sound/apple,mca.yaml

    diff --git a/Documentation/devicetree/bindings/sound/apple,mca.yaml b/Documentation/devicetree/bindings/sound/apple,mca.yaml
    new file mode 100644
    index 000000000000..c8a36d8c38ad
    --- /dev/null
    +++ b/Documentation/devicetree/bindings/sound/apple,mca.yaml
    @@ -0,0 +1,102 @@
    +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
    +%YAML 1.2
    +---
    +$id: http://devicetree.org/schemas/sound/apple,mca.yaml#
    +$schema: http://devicetree.org/meta-schemas/core.yaml#
    +
    +title: Apple MCA I2S transceiver
    +
    +description: |
    + MCA is an I2S transceiver peripheral found on M1 and other Apple chips. It is
    + composed of a number of identical clusters which can operate independently
    + or in an interlinked fashion. Up to 6 clusters have been seen on an MCA.
    +
    +maintainers:
    + - Martin Povišer <povik+lin@cutebit.org>
    +
    +properties:
    + compatible:
    + items:
    + - enum:
    + - apple,t8103-mca
    + - apple,t6000-mca
    + - const: apple,mca
    +
    + reg:
    + minItems: 2
    + maxItems: 2
    +
    + interrupts:
    + maxItems: 6
    + description: |
    + One interrupt per each cluster
    +
    + "#address-cells":
    + const: 1
    +
    + "#size-cells":
    + const: 0
    +
    + dmas:
    + minItems: 16
    + maxItems: 24
    + description: |
    + DMA channels associated to the SERDES units within the peripheral. They
    + are listed in groups of four per cluster, and within the cluster they are
    + given in order TXA, RXA, TXB, RXB of the respective SERDES units.
    +
    + dma-names:
    + minItems: 16
    + maxItems: 24
    + description: |
    + Names for the DMA channels: 'tx'/'rx', then cluster number, then 'a'/'b'
    + based on the associated SERDES unit.
    +
    + clocks:
    + minItems: 4
    + maxItems: 6
    + description: |
    + Clusters' input reference clock.
    +
    + power-domains:
    + minItems: 5
    + maxItems: 7
    + description: |
    + First the overall power domain for register access, then the power
    + domains of individual clusters for their operation.
    +
    + "#sound-dai-cells":
    + const: 1
    +
    +required:
    + - compatible
    + - reg
    + - dmas
    + - dma-names
    + - clocks
    + - power-domains
    + - '#sound-dai-cells'
    +
    +additionalProperties: false
    +
    +examples:
    + - |
    + mca: mca@9b600000 {
    + compatible = "apple,t6000-mca", "apple,mca";
    + reg = <0x9b600000 0x10000>,
    + <0x9b500000 0x20000>;
    +
    + clocks = <&nco 0>, <&nco 1>, <&nco 2>, <&nco 3>;
    + power-domains = <&ps_audio_p>, <&ps_mca0>, <&ps_mca1>,
    + <&ps_mca2>, <&ps_mca3>;
    + dmas = <&admac 0>, <&admac 1>, <&admac 2>, <&admac 3>,
    + <&admac 4>, <&admac 5>, <&admac 6>, <&admac 7>,
    + <&admac 8>, <&admac 9>, <&admac 10>, <&admac 11>,
    + <&admac 12>, <&admac 13>, <&admac 14>, <&admac 15>;
    + dma-names = "tx0a", "rx0a", "tx0b", "rx0b",
    + "tx1a", "rx1a", "tx1b", "rx1b",
    + "tx2a", "rx2a", "tx2b", "rx2b",
    + "tx3a", "rx3a", "tx3b", "rx3b";
    +
    + #sound-dai-cells = <1>;
    + };
    --
    2.33.0
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