82 lines
2.2 KiB
YAML
82 lines
2.2 KiB
YAML
# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
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%YAML 1.2
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---
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$id: http://devicetree.org/schemas/sound/nvidia,tegra186-asrc.yaml#
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$schema: http://devicetree.org/meta-schemas/core.yaml#
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title: Tegra186 ASRC
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description: |
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Asynchronous Sample Rate Converter (ASRC) converts the sampling frequency
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of the input signal from one frequency to another. It can handle over a
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wide range of sample rate ratios (freq_in/freq_out) from 1:24 to 24:1.
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ASRC has two modes of operation. One where ratio can be programmed in SW
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and the other where it gets the information from ratio estimator module.
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It supports sample rate conversions in the range of 8 to 192 kHz and
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supports 6 streams upto 12 total channels. The input data size can be
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16, 24 and 32 bits.
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maintainers:
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- Jon Hunter <jonathanh@nvidia.com>
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- Mohan Kumar <mkumard@nvidia.com>
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- Sameer Pujar <spujar@nvidia.com>
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allOf:
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- $ref: dai-common.yaml#
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properties:
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$nodename:
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pattern: "^asrc@[0-9a-f]*$"
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compatible:
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oneOf:
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- const: nvidia,tegra186-asrc
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- items:
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- enum:
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- nvidia,tegra234-asrc
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- nvidia,tegra194-asrc
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- const: nvidia,tegra186-asrc
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reg:
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maxItems: 1
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sound-name-prefix:
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pattern: "^ASRC[1-9]$"
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ports:
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$ref: /schemas/graph.yaml#/properties/ports
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description: |
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ASRC has seven input ports and six output ports. Accordingly ACIF
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(Audio Client Interfaces) port nodes are defined to represent the
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ASRC inputs (port 0 to 6) and outputs (port 7 to 12). These are
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connected to corresponding ports on AHUB (Audio Hub). Additional
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input (port 6) is for receiving ratio information from estimator.
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patternProperties:
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'^port@[0-6]':
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$ref: audio-graph-port.yaml#
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unevaluatedProperties: false
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description: ASRC ACIF input ports
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'^port@[7-9]|1[1-2]':
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$ref: audio-graph-port.yaml#
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unevaluatedProperties: false
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description: ASRC ACIF output ports
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required:
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- compatible
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- reg
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additionalProperties: false
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examples:
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- |
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asrc@2910000 {
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compatible = "nvidia,tegra186-asrc";
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reg = <0x2910000 0x2000>;
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sound-name-prefix = "ASRC1";
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};
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...
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