nvidia,tegra210-i2s.yaml

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    1 # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
    2 %YAML 1.2
    3 ---
    4 $id: http://devicetree.org/schemas/sound/nvidia,tegra210-i2s.yaml#
    5 $schema: http://devicetree.org/meta-schemas/core.yaml#
    6 
    7 title: Tegra210 I2S Controller Device Tree Bindings
    8 
    9 description: |
   10   The Inter-IC Sound (I2S) controller implements full-duplex,
   11   bi-directional and single direction point-to-point serial
   12   interfaces. It can interface with I2S compatible devices.
   13   I2S controller can operate both in master and slave mode.
   14 
   15 maintainers:
   16   - Jon Hunter <jonathanh@nvidia.com>
   17   - Sameer Pujar <spujar@nvidia.com>
   18 
   19 allOf:
   20   - $ref: name-prefix.yaml#
   21 
   22 properties:
   23   $nodename:
   24     pattern: "^i2s@[0-9a-f]*$"
   25 
   26   compatible:
   27     oneOf:
   28       - const: nvidia,tegra210-i2s
   29       - items:
   30           - enum:
   31               - nvidia,tegra234-i2s
   32               - nvidia,tegra194-i2s
   33               - nvidia,tegra186-i2s
   34           - const: nvidia,tegra210-i2s
   35 
   36   reg:
   37     maxItems: 1
   38 
   39   clocks:
   40     minItems: 1
   41     items:
   42       - description: I2S bit clock
   43       - description:
   44           Sync input clock, which can act as clock source to other I/O
   45           modules in AHUB. The Tegra I2S driver sets this clock rate as
   46           per bit clock rate. I/O module which wants to use this clock
   47           as source, can mention this clock as parent in the DT bindings.
   48           This is an optional clock entry, since it is only required when
   49           some other I/O wants to reference from a particular I2Sx
   50           instance.
   51 
   52   clock-names:
   53     minItems: 1
   54     items:
   55       - const: i2s
   56       - const: sync_input
   57 
   58   assigned-clocks:
   59     minItems: 1
   60     maxItems: 2
   61 
   62   assigned-clock-parents:
   63     minItems: 1
   64     maxItems: 2
   65 
   66   assigned-clock-rates:
   67     minItems: 1
   68     maxItems: 2
   69 
   70   sound-name-prefix:
   71     pattern: "^I2S[1-9]$"
   72 
   73   ports:
   74     $ref: /schemas/graph.yaml#/properties/ports
   75     properties:
   76       port@0:
   77         $ref: audio-graph-port.yaml#
   78         unevaluatedProperties: false
   79         description: |
   80           I2S ACIF (Audio Client Interface) port connected to the
   81           corresponding AHUB (Audio Hub) ACIF port.
   82 
   83       port@1:
   84         $ref: audio-graph-port.yaml#
   85         unevaluatedProperties: false
   86         description: |
   87           I2S DAP (Digital Audio Port) interface which can be connected
   88           to external audio codec for playback or capture.
   89 
   90 required:
   91   - compatible
   92   - reg
   93   - clocks
   94   - clock-names
   95   - assigned-clocks
   96   - assigned-clock-parents
   97 
   98 additionalProperties: false
   99 
  100 examples:
  101   - |
  102     #include<dt-bindings/clock/tegra210-car.h>
  103 
  104     i2s@702d1000 {
  105         compatible = "nvidia,tegra210-i2s";
  106         reg = <0x702d1000 0x100>;
  107         clocks = <&tegra_car TEGRA210_CLK_I2S0>;
  108         clock-names = "i2s";
  109         assigned-clocks = <&tegra_car TEGRA210_CLK_I2S0>;
  110         assigned-clock-parents = <&tegra_car TEGRA210_CLK_PLL_A_OUT0>;
  111         assigned-clock-rates = <1536000>;
  112         sound-name-prefix = "I2S1";
  113     };
  114 
  115 ...

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FreeBSD/Linux Kernel Cross Reference sys/contrib/device-tree/Bindings/sound/nvidia,tegra210-i2s.yaml

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sys/contrib/device-tree/Bindings/sound/nvidia,tegra210-i2s.yaml