1 # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
4 $id: http://devicetree.org/schemas/sound/nvidia,tegra210-dmic.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
7 title: Tegra210 DMIC Controller Device Tree Bindings
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
16 - Jon Hunter <jonathanh@nvidia.com>
17 - Sameer Pujar <spujar@nvidia.com>
20 - $ref: name-prefix.yaml#
24 pattern: "^dmic@[0-9a-f]*$"
28 - const: nvidia,tegra210-dmic
31 - nvidia,tegra234-dmic
32 - nvidia,tegra194-dmic
33 - nvidia,tegra186-dmic
34 - const: nvidia,tegra210-dmic
48 assigned-clock-parents:
55 pattern: "^DMIC[1-9]$"
58 $ref: /schemas/graph.yaml#/properties/ports
61 $ref: audio-graph-port.yaml#
62 unevaluatedProperties: false
64 DMIC ACIF (Audio Client Interface) port connected to the
65 corresponding AHUB (Audio Hub) ACIF port.
68 $ref: audio-graph-port.yaml#
69 unevaluatedProperties: false
71 DMIC DAP (Digital Audio Port) interface which can be connected
72 to external audio codec for capture.
80 - assigned-clock-parents
82 additionalProperties: false
86 #include<dt-bindings/clock/tegra210-car.h>
89 compatible = "nvidia,tegra210-dmic";
90 reg = <0x702d4000 0x100>;
91 clocks = <&tegra_car TEGRA210_CLK_DMIC1>;
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";