100 lines
2.2 KiB
YAML
100 lines
2.2 KiB
YAML
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# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
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%YAML 1.2
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---
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$id: http://devicetree.org/schemas/sound/nvidia,tegra210-dmic.yaml#
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$schema: http://devicetree.org/meta-schemas/core.yaml#
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title: Tegra210 DMIC Controller
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description: |
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The Digital MIC (DMIC) Controller is used to interface with Pulse
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Density Modulation (PDM) input devices. It converts PDM signals to
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Pulse Coded Modulation (PCM) signals. DMIC can be viewed as a PDM
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receiver.
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maintainers:
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- Jon Hunter <jonathanh@nvidia.com>
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- Sameer Pujar <spujar@nvidia.com>
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allOf:
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- $ref: dai-common.yaml#
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properties:
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$nodename:
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pattern: "^dmic@[0-9a-f]*$"
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compatible:
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oneOf:
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- const: nvidia,tegra210-dmic
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- items:
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- enum:
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- nvidia,tegra234-dmic
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- nvidia,tegra194-dmic
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- nvidia,tegra186-dmic
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- const: nvidia,tegra210-dmic
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reg:
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maxItems: 1
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clocks:
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maxItems: 1
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clock-names:
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const: dmic
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assigned-clocks:
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maxItems: 1
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assigned-clock-parents:
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maxItems: 1
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assigned-clock-rates:
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maxItems: 1
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sound-name-prefix:
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pattern: "^DMIC[1-9]$"
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ports:
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$ref: /schemas/graph.yaml#/properties/ports
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properties:
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port@0:
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$ref: audio-graph-port.yaml#
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unevaluatedProperties: false
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description: |
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DMIC ACIF (Audio Client Interface) port connected to the
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corresponding AHUB (Audio Hub) ACIF port.
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port@1:
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$ref: audio-graph-port.yaml#
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unevaluatedProperties: false
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description: |
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DMIC DAP (Digital Audio Port) interface which can be connected
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to external audio codec for capture.
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required:
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- compatible
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- reg
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- clocks
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- clock-names
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- assigned-clocks
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- assigned-clock-parents
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additionalProperties: false
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examples:
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- |
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#include<dt-bindings/clock/tegra210-car.h>
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dmic@702d4000 {
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compatible = "nvidia,tegra210-dmic";
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reg = <0x702d4000 0x100>;
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clocks = <&tegra_car TEGRA210_CLK_DMIC1>;
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clock-names = "dmic";
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assigned-clocks = <&tegra_car TEGRA210_CLK_DMIC1>;
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assigned-clock-parents = <&tegra_car TEGRA210_CLK_PLL_A_OUT0>;
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assigned-clock-rates = <3072000>;
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sound-name-prefix = "DMIC1";
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};
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...
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