nvidia,tegra210-dmic.yaml

  1# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
  2%YAML 1.2
  3---
  4$id: http://devicetree.org/schemas/sound/nvidia,tegra210-dmic.yaml#
  5$schema: http://devicetree.org/meta-schemas/core.yaml#
  6
  7title: Tegra210 DMIC Controller
  8
  9description: |
 10  The Digital MIC (DMIC) Controller is used to interface with Pulse
 11  Density Modulation (PDM) input devices. It converts PDM signals to
 12  Pulse Coded Modulation (PCM) signals. DMIC can be viewed as a PDM
 13  receiver.
 14
 15maintainers:
 16  - Jon Hunter <jonathanh@nvidia.com>
 17  - Sameer Pujar <spujar@nvidia.com>
 18
 19allOf:
 20  - $ref: dai-common.yaml#
 21
 22properties:
 23  $nodename:
 24    pattern: "^dmic@[0-9a-f]*$"
 25
 26  compatible:
 27    oneOf:
 28      - const: nvidia,tegra210-dmic
 29      - items:
 30          - enum:
 31              - nvidia,tegra264-dmic
 32              - nvidia,tegra234-dmic
 33              - nvidia,tegra194-dmic
 34              - nvidia,tegra186-dmic
 35          - const: nvidia,tegra210-dmic
 36
 37  reg:
 38    maxItems: 1
 39
 40  clocks:
 41    maxItems: 1
 42
 43  clock-names:
 44    const: dmic
 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: "^DMIC[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          DMIC 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          DMIC DAP (Digital Audio Port) interface which can be connected
 73          to external audio codec for capture.
 74
 75required:
 76  - compatible
 77  - reg
 78  - clocks
 79  - clock-names
 80  - assigned-clocks
 81  - assigned-clock-parents
 82
 83additionalProperties: false
 84
 85examples:
 86  - |
 87    #include<dt-bindings/clock/tegra210-car.h>
 88
 89    dmic@702d4000 {
 90        compatible = "nvidia,tegra210-dmic";
 91        reg = <0x702d4000 0x100>;
 92        clocks = <&tegra_car TEGRA210_CLK_DMIC1>;
 93        clock-names = "dmic";
 94        assigned-clocks = <&tegra_car TEGRA210_CLK_DMIC1>;
 95        assigned-clock-parents = <&tegra_car TEGRA210_CLK_PLL_A_OUT0>;
 96        assigned-clock-rates = <3072000>;
 97        sound-name-prefix = "DMIC1";
 98    };
 99
100...