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 Device Tree Bindings 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 19properties: 20 $nodename: 21 pattern: "^dmic@[0-9a-f]*$" 22 23 compatible: 24 oneOf: 25 - const: nvidia,tegra210-dmic 26 - items: 27 - enum: 28 - nvidia,tegra194-dmic 29 - nvidia,tegra186-dmic 30 - const: nvidia,tegra210-dmic 31 32 reg: 33 maxItems: 1 34 35 clocks: 36 maxItems: 1 37 38 clock-names: 39 const: dmic 40 41 assigned-clocks: 42 maxItems: 1 43 44 assigned-clock-parents: 45 maxItems: 1 46 47 assigned-clock-rates: 48 maxItems: 1 49 50 sound-name-prefix: 51 pattern: "^DMIC[1-9]$" 52 $ref: /schemas/types.yaml#/definitions/string 53 description: 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. 58 59required: 60 - compatible 61 - reg 62 - clocks 63 - clock-names 64 - assigned-clocks 65 - assigned-clock-parents 66 67examples: 68 - | 69 #include<dt-bindings/clock/tegra210-car.h> 70 71 dmic@702d4000 { 72 compatible = "nvidia,tegra210-dmic"; 73 reg = <0x702d4000 0x100>; 74 clocks = <&tegra_car TEGRA210_CLK_DMIC1>; 75 clock-names = "dmic"; 76 assigned-clocks = <&tegra_car TEGRA210_CLK_DMIC1>; 77 assigned-clock-parents = <&tegra_car TEGRA210_CLK_PLL_A_OUT0>; 78 assigned-clock-rates = <3072000>; 79 sound-name-prefix = "DMIC1"; 80 }; 81 82... 83