Bindings/sound/nvidia,tegra20-spdif.yaml

   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,tegra20-spdif.yaml#
   5 $schema: http://devicetree.org/meta-schemas/core.yaml#
   6
   7 title: NVIDIA Tegra20 S/PDIF Controller
   8
   9 description: |
  10   The S/PDIF controller supports both input and output in serial audio
  11   digital interface format. The input controller can digitally recover
  12   a clock from the received stream. The S/PDIF controller is also used
  13   to generate the embedded audio for HDMI output channel.
  14
  15 maintainers:
  16   - Thierry Reding <treding@nvidia.com>
  17   - Jon Hunter <jonathanh@nvidia.com>
  18
  19 allOf:
  20   - $ref: dai-common.yaml#
  21
  22 properties:
  23   compatible:
  24     const: nvidia,tegra20-spdif
  25
  26   reg:
  27     maxItems: 1
  28
  29   resets:
  30     maxItems: 1
  31
  32   interrupts:
  33     maxItems: 1
  34
  35   clocks:
  36     minItems: 2
  37
  38   clock-names:
  39     items:
  40       - const: out
  41       - const: in
  42
  43   dmas:
  44     minItems: 2
  45
  46   dma-names:
  47     items:
  48       - const: rx
  49       - const: tx
  50
  51   "#sound-dai-cells":
  52     const: 0
  53
  54   nvidia,fixed-parent-rate:
  55     description: |
  56       Specifies whether board prefers parent clock to stay at a fixed rate.
  57       This allows multiple Tegra20 audio components work simultaneously by
  58       limiting number of supportable audio rates.
  59     type: boolean
  60
  61 required:
  62   - compatible
  63   - reg
  64   - resets
  65   - interrupts
  66   - clocks
  67   - clock-names
  68   - dmas
  69   - dma-names
  70   - "#sound-dai-cells"
  71
  72 unevaluatedProperties: false
  73
  74 examples:
  75   - |
  76     spdif@70002400 {
  77         compatible = "nvidia,tegra20-spdif";
  78         reg = <0x70002400 0x200>;
  79         interrupts = <77>;
  80         clocks = <&clk 99>, <&clk 98>;
  81         clock-names = "out", "in";
  82         resets = <&rst 10>;
  83         dmas = <&apbdma 3>, <&apbdma 3>;
  84         dma-names = "rx", "tx";
  85         #sound-dai-cells = <0>;
  86     };
  87
  88 ...