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130 lines
3.3 KiB
YAML
130 lines
3.3 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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$id: http://devicetree.org/schemas/sound/nvidia,tegra210-admaif.yaml#
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$schema: http://devicetree.org/meta-schemas/core.yaml#
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title: Tegra210 ADMAIF Device Tree Bindings
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description: |
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ADMAIF is the interface between ADMA and AHUB. Each ADMA channel
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that sends/receives data to/from AHUB must interface through an
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ADMAIF channel. ADMA channel sending data to AHUB pairs with ADMAIF
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Tx channel and ADMA channel receiving data from AHUB pairs with
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ADMAIF Rx channel.
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maintainers:
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- Jon Hunter <jonathanh@nvidia.com>
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- Sameer Pujar <spujar@nvidia.com>
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properties:
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$nodename:
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pattern: "^admaif@[0-9a-f]*$"
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compatible:
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oneOf:
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- enum:
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- nvidia,tegra210-admaif
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- nvidia,tegra186-admaif
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- items:
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- enum:
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- nvidia,tegra234-admaif
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- nvidia,tegra194-admaif
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- const: nvidia,tegra186-admaif
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reg:
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maxItems: 1
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dmas: true
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dma-names: true
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ports:
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$ref: /schemas/graph.yaml#/properties/ports
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description: |
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Contains list of ACIF (Audio CIF) port nodes for ADMAIF channels.
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The number of port nodes depends on the number of ADMAIF channels
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that SoC may have. These are interfaced with respective ACIF ports
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in AHUB (Audio Hub). Each port is capable of data transfers in
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both directions.
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patternProperties:
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'^port@[0-9]':
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$ref: audio-graph-port.yaml#
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unevaluatedProperties: false
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if:
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properties:
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compatible:
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contains:
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const: nvidia,tegra210-admaif
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then:
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properties:
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dmas:
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description:
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DMA channel specifiers, equally divided for Tx and Rx.
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minItems: 1
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maxItems: 20
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dma-names:
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items:
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pattern: "^[rt]x(10|[1-9])$"
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description:
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Should be "rx1", "rx2" ... "rx10" for DMA Rx channel
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Should be "tx1", "tx2" ... "tx10" for DMA Tx channel
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minItems: 1
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maxItems: 20
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else:
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properties:
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dmas:
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description:
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DMA channel specifiers, equally divided for Tx and Rx.
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minItems: 1
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maxItems: 40
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dma-names:
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items:
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pattern: "^[rt]x(1[0-9]|[1-9]|20)$"
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description:
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Should be "rx1", "rx2" ... "rx20" for DMA Rx channel
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Should be "tx1", "tx2" ... "tx20" for DMA Tx channel
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minItems: 1
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maxItems: 40
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required:
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- compatible
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- reg
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- dmas
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- dma-names
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additionalProperties: false
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examples:
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- |
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admaif@702d0000 {
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compatible = "nvidia,tegra210-admaif";
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reg = <0x702d0000 0x800>;
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dmas = <&adma 1>, <&adma 1>,
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<&adma 2>, <&adma 2>,
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<&adma 3>, <&adma 3>,
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<&adma 4>, <&adma 4>,
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<&adma 5>, <&adma 5>,
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<&adma 6>, <&adma 6>,
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<&adma 7>, <&adma 7>,
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<&adma 8>, <&adma 8>,
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<&adma 9>, <&adma 9>,
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<&adma 10>, <&adma 10>;
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dma-names = "rx1", "tx1",
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"rx2", "tx2",
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"rx3", "tx3",
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"rx4", "tx4",
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"rx5", "tx5",
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"rx6", "tx6",
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"rx7", "tx7",
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"rx8", "tx8",
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"rx9", "tx9",
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"rx10", "tx10";
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};
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...
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