mchp,i2s-mcc.yaml

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    1 # SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
    2 %YAML 1.2
    3 ---
    4 $id: http://devicetree.org/schemas/sound/mchp,i2s-mcc.yaml#
    5 $schema: http://devicetree.org/meta-schemas/core.yaml#
    6 
    7 title: Microchip I2S Multi-Channel Controller
    8 
    9 maintainers:
   10   - Codrin Ciubotariu <codrin.ciubotariu@microchip.com>
   11 
   12 description:
   13   The I2SMCC complies with the Inter-IC Sound (I2S) bus specification and
   14   supports a Time Division Multiplexed (TDM) interface with external
   15   multi-channel audio codecs. It consists of a receiver, a transmitter and a
   16   common clock generator that can be enabled separately to provide Adapter,
   17   Client or Controller modes with receiver and/or transmitter active.
   18   On later I2SMCC versions (starting with Microchip's SAMA7G5) I2S
   19   multi-channel is supported by using multiple data pins, output and
   20   input, without TDM.
   21 
   22 properties:
   23   "#sound-dai-cells":
   24     const: 0
   25 
   26   compatible:
   27     enum:
   28       - microchip,sam9x60-i2smcc
   29       - microchip,sama7g5-i2smcc
   30 
   31   reg:
   32     maxItems: 1
   33 
   34   interrupts:
   35     maxItems: 1
   36 
   37   clocks:
   38     items:
   39       - description: Peripheral Bus Clock
   40       - description: Generic Clock (Optional). Should be set mostly when Master
   41           Mode is required.
   42     minItems: 1
   43 
   44   clock-names:
   45     items:
   46       - const: pclk
   47       - const: gclk
   48     minItems: 1
   49 
   50   dmas:
   51     items:
   52       - description: TX DMA Channel
   53       - description: RX DMA Channel
   54 
   55   dma-names:
   56     items:
   57       - const: tx
   58       - const: rx
   59 
   60   microchip,tdm-data-pair:
   61     description:
   62       Represents the DIN/DOUT pair pins that are used to receive/send
   63       TDM data. It is optional and it is only needed if the controller
   64       uses the TDM mode.
   65     $ref: /schemas/types.yaml#/definitions/uint8
   66     enum: [0, 1, 2, 3]
   67     default: 0
   68 
   69 if:
   70   properties:
   71     compatible:
   72       const: microchip,sam9x60-i2smcc
   73 then:
   74   properties:
   75     microchip,tdm-data-pair: false
   76 
   77 required:
   78   - "#sound-dai-cells"
   79   - compatible
   80   - reg
   81   - interrupts
   82   - clocks
   83   - clock-names
   84   - dmas
   85   - dma-names
   86 
   87 additionalProperties: false
   88 
   89 examples:
   90   - |
   91     #include <dt-bindings/dma/at91.h>
   92     #include <dt-bindings/interrupt-controller/arm-gic.h>
   93 
   94     i2s@f001c000 {
   95         #sound-dai-cells = <0>;
   96         compatible = "microchip,sam9x60-i2smcc";
   97         reg = <0xf001c000 0x100>;
   98         interrupts = <34 IRQ_TYPE_LEVEL_HIGH 7>;
   99         dmas = <&dma0 (AT91_XDMAC_DT_MEM_IF(0) | AT91_XDMAC_DT_PER_IF(1) |
  100                        AT91_XDMAC_DT_PERID(36))>,
  101                <&dma0 (AT91_XDMAC_DT_MEM_IF(0) | AT91_XDMAC_DT_PER_IF(1) |
  102                        AT91_XDMAC_DT_PERID(37))>;
  103         dma-names = "tx", "rx";
  104         clocks = <&i2s_clk>, <&i2s_gclk>;
  105         clock-names = "pclk", "gclk";
  106         pinctrl-names = "default";
  107         pinctrl-0 = <&pinctrl_i2s_default>;
  108     };

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