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Add device tree binding properties of generic graph to ASoC component devices. This allows to define audio ports out of these components or DAIs and audio graph based sound card can be realised with this. Signed-off-by: Sameer Pujar <spujar@nvidia.com> Reviewed-by: Jon Hunter <jonathanh@nvidia.com> Link: https://lore.kernel.org/r/1611048496-24650-2-git-send-email-spujar@nvidia.com Signed-off-by: Mark Brown <broonie@kernel.org>
101 lines
2.4 KiB
YAML
101 lines
2.4 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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$id: http://devicetree.org/schemas/sound/nvidia,tegra186-dspk.yaml#
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$schema: http://devicetree.org/meta-schemas/core.yaml#
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title: Tegra186 DSPK Controller Device Tree Bindings
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description: |
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The Digital Speaker Controller (DSPK) can be viewed as a Pulse
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Density Modulation (PDM) transmitter that up-samples the input to
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the desired sampling rate by interpolation and then converts the
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over sampled Pulse Code Modulation (PCM) input to the desired 1-bit
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output via Delta Sigma Modulation (DSM).
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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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allOf:
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- $ref: audio-graph-port.yaml#
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properties:
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$nodename:
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pattern: "^dspk@[0-9a-f]*$"
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compatible:
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oneOf:
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- const: nvidia,tegra186-dspk
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- items:
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- const: nvidia,tegra194-dspk
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- const: nvidia,tegra186-dspk
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reg:
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maxItems: 1
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clocks:
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maxItems: 1
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clock-names:
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const: dspk
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assigned-clocks:
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maxItems: 1
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assigned-clock-parents:
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maxItems: 1
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assigned-clock-rates:
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maxItems: 1
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sound-name-prefix:
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pattern: "^DSPK[1-9]$"
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$ref: /schemas/types.yaml#/definitions/string
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description:
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Used as prefix for sink/source names of the component. Must be a
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unique string among multiple instances of the same component.
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The name can be "DSPK1" or "DSPKx", where x depends on the maximum
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available instances on a Tegra SoC.
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ports:
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type: object
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properties:
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port@0:
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description: |
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DSPK ACIF (Audio Client Interface) port connected to the
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corresponding AHUB (Audio Hub) ACIF port.
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port@1:
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description: |
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DSPK DAP (Digital Audio Port) interface which can be connected
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to external audio codec for playback.
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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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- sound-name-prefix
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unevaluatedProperties: false
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examples:
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- |
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#include<dt-bindings/clock/tegra186-clock.h>
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dspk@2905000 {
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compatible = "nvidia,tegra186-dspk";
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reg = <0x2905000 0x100>;
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clocks = <&bpmp TEGRA186_CLK_DSPK1>;
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clock-names = "dspk";
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assigned-clocks = <&bpmp TEGRA186_CLK_DSPK1>;
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assigned-clock-parents = <&bpmp TEGRA186_CLK_PLL_A_OUT0>;
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assigned-clock-rates = <12288000>;
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sound-name-prefix = "DSPK1";
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};
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...
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