nvidia,tegra186-dspk.yaml

  1# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
  2%YAML 1.2
  3---
  4$id: http://devicetree.org/schemas/sound/nvidia,tegra186-dspk.yaml#
  5$schema: http://devicetree.org/meta-schemas/core.yaml#
  6
  7title: Tegra186 DSPK Controller
  8
  9description: |
 10  The Digital Speaker Controller (DSPK) can be viewed as a Pulse
 11  Density Modulation (PDM) transmitter that up-samples the input to
 12  the desired sampling rate by interpolation and then converts the
 13  over sampled Pulse Code Modulation (PCM) input to the desired 1-bit
 14  output via Delta Sigma Modulation (DSM).
 15
 16maintainers:
 17  - Jon Hunter <jonathanh@nvidia.com>
 18  - Sameer Pujar <spujar@nvidia.com>
 19
 20allOf:
 21  - $ref: dai-common.yaml#
 22
 23properties:
 24  $nodename:
 25    pattern: "^dspk@[0-9a-f]*$"
 26
 27  compatible:
 28    oneOf:
 29      - const: nvidia,tegra186-dspk
 30      - items:
 31          - enum:
 32              - nvidia,tegra264-dspk
 33              - nvidia,tegra234-dspk
 34              - nvidia,tegra194-dspk
 35          - const: nvidia,tegra186-dspk
 36
 37  reg:
 38    maxItems: 1
 39
 40  clocks:
 41    maxItems: 1
 42
 43  clock-names:
 44    const: dspk
 45
 46  assigned-clocks:
 47    maxItems: 1
 48
 49  assigned-clock-parents:
 50    maxItems: 1
 51
 52  assigned-clock-rates:
 53    maxItems: 1
 54
 55  sound-name-prefix:
 56    pattern: "^DSPK[1-9]$"
 57
 58  ports:
 59    $ref: /schemas/graph.yaml#/properties/ports
 60    properties:
 61      port@0:
 62        $ref: audio-graph-port.yaml#
 63        unevaluatedProperties: false
 64        description: |
 65          DSPK ACIF (Audio Client Interface) port connected to the
 66          corresponding AHUB (Audio Hub) ACIF port.
 67
 68      port@1:
 69        $ref: audio-graph-port.yaml#
 70        unevaluatedProperties: false
 71        description: |
 72          DSPK DAP (Digital Audio Port) interface which can be connected
 73          to external audio codec for playback.
 74
 75required:
 76  - compatible
 77  - reg
 78  - clocks
 79  - clock-names
 80  - assigned-clocks
 81  - assigned-clock-parents
 82  - sound-name-prefix
 83
 84additionalProperties: false
 85
 86examples:
 87  - |
 88    #include<dt-bindings/clock/tegra186-clock.h>
 89
 90    dspk@2905000 {
 91        compatible = "nvidia,tegra186-dspk";
 92        reg = <0x2905000 0x100>;
 93        clocks = <&bpmp TEGRA186_CLK_DSPK1>;
 94        clock-names = "dspk";
 95        assigned-clocks = <&bpmp TEGRA186_CLK_DSPK1>;
 96        assigned-clock-parents = <&bpmp TEGRA186_CLK_PLL_A_OUT0>;
 97        assigned-clock-rates = <12288000>;
 98        sound-name-prefix = "DSPK1";
 99    };
100
101...