1 # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
4 $id: http://devicetree.org/schemas/sound/nvidia,tegra210-dmic.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
7 title: Tegra210 DMIC Controller Device Tree Bindings
10 The Digital MIC (DMIC) Controller is used to interface with Pulse
11 Density Modulation (PDM) input devices. It converts PDM signals to
12 Pulse Coded Modulation (PCM) signals. DMIC can be viewed as a PDM
16 - Jon Hunter <jonathanh@nvidia.com>
17 - Sameer Pujar <spujar@nvidia.com>
21 pattern: "^dmic@[0-9a-f]*$"
25 - const: nvidia,tegra210-dmic
28 - nvidia,tegra194-dmic
29 - nvidia,tegra186-dmic
30 - const: nvidia,tegra210-dmic
44 assigned-clock-parents:
51 pattern: "^DMIC[1-9]$"
52 $ref: /schemas/types.yaml#/definitions/string
54 used as prefix for sink/source names of the component. Must be a
55 unique string among multiple instances of the same component.
56 The name can be "DMIC1" or "DMIC2" ... "DMICx", where x depends
57 on the maximum available instances on a Tegra SoC.
60 $ref: /schemas/graph.yaml#/properties/ports
63 $ref: audio-graph-port.yaml#
64 unevaluatedProperties: false
66 DMIC ACIF (Audio Client Interface) port connected to the
67 corresponding AHUB (Audio Hub) ACIF port.
70 $ref: audio-graph-port.yaml#
71 unevaluatedProperties: false
73 DMIC DAP (Digital Audio Port) interface which can be connected
74 to external audio codec for capture.
82 - assigned-clock-parents
84 additionalProperties: false
88 #include<dt-bindings/clock/tegra210-car.h>
91 compatible = "nvidia,tegra210-dmic";
92 reg = <0x702d4000 0x100>;
93 clocks = <&tegra_car TEGRA210_CLK_DMIC1>;
95 assigned-clocks = <&tegra_car TEGRA210_CLK_DMIC1>;
96 assigned-clock-parents = <&tegra_car TEGRA210_CLK_PLL_A_OUT0>;
97 assigned-clock-rates = <3072000>;
98 sound-name-prefix = "DMIC1";