168 lines
4.3 KiB
YAML
168 lines
4.3 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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$id: http://devicetree.org/schemas/sound/nvidia,tegra210-ahub.yaml#
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$schema: http://devicetree.org/meta-schemas/core.yaml#
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title: Tegra210 AHUB Device Tree Bindings
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description: |
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The Audio Hub (AHUB) comprises a collection of hardware accelerators
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for audio pre-processing, post-processing and a programmable full
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crossbar for routing audio data across these accelerators. It has
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external interfaces such as I2S, DMIC, DSPK. It interfaces with ADMA
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engine through ADMAIF.
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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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$nodename:
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pattern: "^ahub@[0-9a-f]*$"
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compatible:
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oneOf:
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- enum:
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- nvidia,tegra210-ahub
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- nvidia,tegra186-ahub
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- items:
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- const: nvidia,tegra194-ahub
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- const: nvidia,tegra186-ahub
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reg:
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maxItems: 1
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clocks:
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maxItems: 1
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clock-names:
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const: ahub
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assigned-clocks:
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maxItems: 1
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assigned-clock-parents:
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maxItems: 1
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assigned-clock-rates:
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maxItems: 1
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"#address-cells":
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const: 1
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"#size-cells":
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const: 1
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ranges: true
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ports:
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$ref: /schemas/graph.yaml#/properties/ports
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description: |
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Contains list of ACIF (Audio CIF) port nodes for AHUB (Audio Hub).
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These are connected to ACIF interfaces of AHUB clients. Thus the
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number of port nodes depend on the number of clients that AHUB may
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have depending on the SoC revision.
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patternProperties:
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'^port@[0-9]':
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$ref: audio-graph-port.yaml#
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unevaluatedProperties: false
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patternProperties:
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'^i2s@[0-9a-f]+$':
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type: object
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'^dmic@[0-9a-f]+$':
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type: object
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$ref: nvidia,tegra210-dmic.yaml#
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'^admaif@[0-9a-f]+$':
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type: object
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$ref: nvidia,tegra210-admaif.yaml#
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'^dspk@[0-9a-f]+$':
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type: object
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$ref: nvidia,tegra186-dspk.yaml#
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required:
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- compatible
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- reg
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- clocks
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- clock-names
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- assigned-clocks
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- assigned-clock-parents
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- "#address-cells"
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- "#size-cells"
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- ranges
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additionalProperties: false
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examples:
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- |
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#include<dt-bindings/clock/tegra210-car.h>
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ahub@702d0800 {
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compatible = "nvidia,tegra210-ahub";
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reg = <0x702d0800 0x800>;
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clocks = <&tegra_car TEGRA210_CLK_D_AUDIO>;
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clock-names = "ahub";
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assigned-clocks = <&tegra_car TEGRA210_CLK_D_AUDIO>;
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assigned-clock-parents = <&tegra_car TEGRA210_CLK_PLL_A_OUT0>;
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#address-cells = <1>;
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#size-cells = <1>;
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ranges = <0x702d0000 0x702d0000 0x0000e400>;
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// All AHUB child nodes below
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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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i2s@702d1000 {
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compatible = "nvidia,tegra210-i2s";
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reg = <0x702d1000 0x100>;
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clocks = <&tegra_car TEGRA210_CLK_I2S0>;
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clock-names = "i2s";
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assigned-clocks = <&tegra_car TEGRA210_CLK_I2S0>;
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assigned-clock-parents = <&tegra_car TEGRA210_CLK_PLL_A_OUT0>;
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assigned-clock-rates = <1536000>;
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sound-name-prefix = "I2S1";
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};
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dmic@702d4000 {
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compatible = "nvidia,tegra210-dmic";
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reg = <0x702d4000 0x100>;
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clocks = <&tegra_car TEGRA210_CLK_DMIC1>;
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clock-names = "dmic";
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assigned-clocks = <&tegra_car TEGRA210_CLK_DMIC1>;
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assigned-clock-parents = <&tegra_car TEGRA210_CLK_PLL_A_OUT0>;
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assigned-clock-rates = <3072000>;
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sound-name-prefix = "DMIC1";
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};
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// More child nodes to follow
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};
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...
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