nvidia,tegra186-dspk.yaml (2369B)
1# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) 2%YAML 1.2 3--- 4$id: http://devicetree.org/schemas/sound/nvidia,tegra186-dspk.yaml# 5$schema: http://devicetree.org/meta-schemas/core.yaml# 6 7title: Tegra186 DSPK Controller Device Tree Bindings 8 9description: | 10 The Digital Speaker Controller (DSPK) can be viewed as a Pulse 11 Density Modulation (PDM) transmitter that up-samples the input to 12 the desired sampling rate by interpolation and then converts the 13 over sampled Pulse Code Modulation (PCM) input to the desired 1-bit 14 output via Delta Sigma Modulation (DSM). 15 16maintainers: 17 - Jon Hunter <jonathanh@nvidia.com> 18 - Sameer Pujar <spujar@nvidia.com> 19 20allOf: 21 - $ref: name-prefix.yaml# 22 23properties: 24 $nodename: 25 pattern: "^dspk@[0-9a-f]*$" 26 27 compatible: 28 oneOf: 29 - const: nvidia,tegra186-dspk 30 - items: 31 - enum: 32 - nvidia,tegra234-dspk 33 - nvidia,tegra194-dspk 34 - const: nvidia,tegra186-dspk 35 36 reg: 37 maxItems: 1 38 39 clocks: 40 maxItems: 1 41 42 clock-names: 43 const: dspk 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: "^DSPK[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 DSPK 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 DSPK DAP (Digital Audio Port) interface which can be connected 72 to external audio codec for playback. 73 74required: 75 - compatible 76 - reg 77 - clocks 78 - clock-names 79 - assigned-clocks 80 - assigned-clock-parents 81 - sound-name-prefix 82 83additionalProperties: false 84 85examples: 86 - | 87 #include<dt-bindings/clock/tegra186-clock.h> 88 89 dspk@2905000 { 90 compatible = "nvidia,tegra186-dspk"; 91 reg = <0x2905000 0x100>; 92 clocks = <&bpmp TEGRA186_CLK_DSPK1>; 93 clock-names = "dspk"; 94 assigned-clocks = <&bpmp TEGRA186_CLK_DSPK1>; 95 assigned-clock-parents = <&bpmp TEGRA186_CLK_PLL_A_OUT0>; 96 assigned-clock-rates = <12288000>; 97 sound-name-prefix = "DSPK1"; 98 }; 99 100...