| Tom Rini | 53633a8 | 2024-02-29 12:33:36 -0500 | [diff] [blame] | 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-amx.yaml# |
| 5 | $schema: http://devicetree.org/meta-schemas/core.yaml# |
| 6 | |
| 7 | title: Tegra210 AMX |
| 8 | |
| 9 | description: | |
| 10 | The Audio Multiplexer (AMX) block can multiplex up to four input streams |
| 11 | each of which can have maximum 16 channels and generate an output stream |
| 12 | with maximum 16 channels. A byte RAM helps to form an output frame by |
| 13 | any combination of bytes from the input frames. |
| 14 | |
| 15 | maintainers: |
| 16 | - Jon Hunter <jonathanh@nvidia.com> |
| 17 | - Mohan Kumar <mkumard@nvidia.com> |
| 18 | - Sameer Pujar <spujar@nvidia.com> |
| 19 | |
| 20 | allOf: |
| 21 | - $ref: dai-common.yaml# |
| 22 | |
| 23 | properties: |
| 24 | $nodename: |
| 25 | pattern: "^amx@[0-9a-f]*$" |
| 26 | |
| 27 | compatible: |
| 28 | oneOf: |
| 29 | - const: nvidia,tegra210-amx |
| 30 | - items: |
| 31 | - const: nvidia,tegra186-amx |
| 32 | - const: nvidia,tegra210-amx |
| 33 | - const: nvidia,tegra194-amx |
| 34 | - items: |
| 35 | - const: nvidia,tegra234-amx |
| 36 | - const: nvidia,tegra194-amx |
| 37 | |
| 38 | reg: |
| 39 | maxItems: 1 |
| 40 | |
| 41 | sound-name-prefix: |
| 42 | pattern: "^AMX[1-9]$" |
| 43 | |
| 44 | ports: |
| 45 | $ref: /schemas/graph.yaml#/properties/ports |
| 46 | description: | |
| 47 | AMX has four inputs and one output. Accordingly ACIF (Audio Client |
| 48 | Interfaces) port nodes are defined to represent AMX inputs (port 0 |
| 49 | to 3) and output (port 4). These are connected to corresponding |
| 50 | ports on AHUB (Audio Hub). |
| 51 | |
| 52 | patternProperties: |
| 53 | '^port@[0-3]': |
| 54 | $ref: audio-graph-port.yaml# |
| 55 | unevaluatedProperties: false |
| 56 | description: AMX ACIF input ports |
| 57 | |
| 58 | properties: |
| 59 | port@4: |
| 60 | $ref: audio-graph-port.yaml# |
| 61 | unevaluatedProperties: false |
| 62 | description: AMX ACIF output port |
| 63 | |
| 64 | required: |
| 65 | - compatible |
| 66 | - reg |
| 67 | |
| 68 | additionalProperties: false |
| 69 | |
| 70 | examples: |
| 71 | - | |
| 72 | |
| 73 | amx@702d3000 { |
| 74 | compatible = "nvidia,tegra210-amx"; |
| 75 | reg = <0x702d3000 0x100>; |
| 76 | sound-name-prefix = "AMX1"; |
| 77 | }; |
| 78 | |
| 79 | ... |