78 lines
1.5 KiB
YAML
78 lines
1.5 KiB
YAML
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# 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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$id: http://devicetree.org/schemas/sound/nvidia,tegra20-i2s.yaml#
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$schema: http://devicetree.org/meta-schemas/core.yaml#
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title: NVIDIA Tegra20 I2S Controller
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description: |
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The I2S Controller streams synchronous serial audio data between system
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memory and an external audio device. The controller supports the I2S Left
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Justified Mode, Right Justified Mode, and DSP mode formats.
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maintainers:
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- Thierry Reding <treding@nvidia.com>
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- Jon Hunter <jonathanh@nvidia.com>
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properties:
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compatible:
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const: nvidia,tegra20-i2s
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reg:
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maxItems: 1
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resets:
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maxItems: 1
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reset-names:
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const: i2s
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interrupts:
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maxItems: 1
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clocks:
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minItems: 1
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dmas:
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minItems: 2
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dma-names:
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items:
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- const: rx
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- const: tx
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nvidia,fixed-parent-rate:
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description: |
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Specifies whether board prefers parent clock to stay at a fixed rate.
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This allows multiple Tegra20 audio components work simultaneously by
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limiting number of supportable audio rates.
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type: boolean
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required:
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- compatible
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- reg
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- resets
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- reset-names
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- interrupts
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- clocks
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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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i2s@70002800 {
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compatible = "nvidia,tegra20-i2s";
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reg = <0x70002800 0x200>;
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interrupts = <45>;
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clocks = <&tegra_car 11>;
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resets = <&tegra_car 11>;
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reset-names = "i2s";
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dmas = <&apbdma 21>, <&apbdma 21>;
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dma-names = "rx", "tx";
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};
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...
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