| Tom Rini | 53633a8 | 2024-02-29 12:33:36 -0500 | [diff] [blame] | 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 | |
| 7 | title: Tegra210 DMIC Controller |
| 8 | |
| 9 | description: | |
| 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 | |
| 15 | maintainers: |
| 16 | - Jon Hunter <jonathanh@nvidia.com> |
| 17 | - Sameer Pujar <spujar@nvidia.com> |
| 18 | |
| 19 | allOf: |
| 20 | - $ref: dai-common.yaml# |
| 21 | |
| 22 | properties: |
| 23 | $nodename: |
| 24 | pattern: "^dmic@[0-9a-f]*$" |
| 25 | |
| 26 | compatible: |
| 27 | oneOf: |
| 28 | - const: nvidia,tegra210-dmic |
| 29 | - items: |
| 30 | - enum: |
| 31 | - nvidia,tegra234-dmic |
| 32 | - nvidia,tegra194-dmic |
| 33 | - nvidia,tegra186-dmic |
| 34 | - const: nvidia,tegra210-dmic |
| 35 | |
| 36 | reg: |
| 37 | maxItems: 1 |
| 38 | |
| 39 | clocks: |
| 40 | maxItems: 1 |
| 41 | |
| 42 | clock-names: |
| 43 | const: dmic |
| 44 | |
| 45 | assigned-clocks: |
| 46 | maxItems: 1 |
| 47 | |
| 48 | assigned-clock-parents: |
| 49 | maxItems: 1 |
| 50 | |
| 51 | assigned-clock-rates: |
| 52 | maxItems: 1 |
| 53 | |
| 54 | sound-name-prefix: |
| 55 | pattern: "^DMIC[1-9]$" |
| 56 | |
| 57 | ports: |
| 58 | $ref: /schemas/graph.yaml#/properties/ports |
| 59 | properties: |
| 60 | port@0: |
| 61 | $ref: audio-graph-port.yaml# |
| 62 | unevaluatedProperties: false |
| 63 | description: | |
| 64 | DMIC ACIF (Audio Client Interface) port connected to the |
| 65 | corresponding AHUB (Audio Hub) ACIF port. |
| 66 | |
| 67 | port@1: |
| 68 | $ref: audio-graph-port.yaml# |
| 69 | unevaluatedProperties: false |
| 70 | description: | |
| 71 | DMIC DAP (Digital Audio Port) interface which can be connected |
| 72 | to external audio codec for capture. |
| 73 | |
| 74 | required: |
| 75 | - compatible |
| 76 | - reg |
| 77 | - clocks |
| 78 | - clock-names |
| 79 | - assigned-clocks |
| 80 | - assigned-clock-parents |
| 81 | |
| 82 | additionalProperties: false |
| 83 | |
| 84 | examples: |
| 85 | - | |
| 86 | #include<dt-bindings/clock/tegra210-car.h> |
| 87 | |
| 88 | dmic@702d4000 { |
| 89 | compatible = "nvidia,tegra210-dmic"; |
| 90 | reg = <0x702d4000 0x100>; |
| 91 | clocks = <&tegra_car TEGRA210_CLK_DMIC1>; |
| 92 | clock-names = "dmic"; |
| 93 | assigned-clocks = <&tegra_car TEGRA210_CLK_DMIC1>; |
| 94 | assigned-clock-parents = <&tegra_car TEGRA210_CLK_PLL_A_OUT0>; |
| 95 | assigned-clock-rates = <3072000>; |
| 96 | sound-name-prefix = "DMIC1"; |
| 97 | }; |
| 98 | |
| 99 | ... |