82 lines · yaml
1# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)2%YAML 1.23---4$id: http://devicetree.org/schemas/sound/nvidia,tegra186-asrc.yaml#5$schema: http://devicetree.org/meta-schemas/core.yaml#6 7title: Tegra186 ASRC8 9description: |10 Asynchronous Sample Rate Converter (ASRC) converts the sampling frequency11 of the input signal from one frequency to another. It can handle over a12 wide range of sample rate ratios (freq_in/freq_out) from 1:24 to 24:1.13 ASRC has two modes of operation. One where ratio can be programmed in SW14 and the other where it gets the information from ratio estimator module.15 16 It supports sample rate conversions in the range of 8 to 192 kHz and17 supports 6 streams upto 12 total channels. The input data size can be18 16, 24 and 32 bits.19 20maintainers:21 - Jon Hunter <jonathanh@nvidia.com>22 - Mohan Kumar <mkumard@nvidia.com>23 - Sameer Pujar <spujar@nvidia.com>24 25allOf:26 - $ref: dai-common.yaml#27 28properties:29 $nodename:30 pattern: "^asrc@[0-9a-f]*$"31 32 compatible:33 oneOf:34 - const: nvidia,tegra186-asrc35 - items:36 - enum:37 - nvidia,tegra234-asrc38 - nvidia,tegra194-asrc39 - const: nvidia,tegra186-asrc40 41 reg:42 maxItems: 143 44 sound-name-prefix:45 pattern: "^ASRC[1-9]$"46 47 ports:48 $ref: /schemas/graph.yaml#/properties/ports49 description: |50 ASRC has seven input ports and six output ports. Accordingly ACIF51 (Audio Client Interfaces) port nodes are defined to represent the52 ASRC inputs (port 0 to 6) and outputs (port 7 to 12). These are53 connected to corresponding ports on AHUB (Audio Hub). Additional54 input (port 6) is for receiving ratio information from estimator.55 56 patternProperties:57 '^port@[0-6]':58 $ref: audio-graph-port.yaml#59 unevaluatedProperties: false60 description: ASRC ACIF input ports61 '^port@[7-9]|1[1-2]':62 $ref: audio-graph-port.yaml#63 unevaluatedProperties: false64 description: ASRC ACIF output ports65 66required:67 - compatible68 - reg69 70additionalProperties: false71 72examples:73 - |74 75 asrc@2910000 {76 compatible = "nvidia,tegra186-asrc";77 reg = <0x2910000 0x2000>;78 sound-name-prefix = "ASRC1";79 };80 81...82