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https://git.kernel.org/pub/scm/linux/kernel/git/chenhuacai/linux-loongson
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a8fed0bddf
Add optional vref-supply property to describe the regulator supplying the digital microphones. Signed-off-by: Olivier Moysan <olivier.moysan@foss.st.com> Acked-by: "Rob Herring (Arm)" <robh@kernel.org> Link: https://patch.msgid.link/20250306171840.593443-2-olivier.moysan@foss.st.com Signed-off-by: Mark Brown <broonie@kernel.org>
59 lines
1.2 KiB
YAML
59 lines
1.2 KiB
YAML
# SPDX-License-Identifier: GPL-2.0
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%YAML 1.2
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---
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$id: http://devicetree.org/schemas/sound/dmic-codec.yaml#
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$schema: http://devicetree.org/meta-schemas/core.yaml#
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title: Generic PDM Digital microphone (DMIC) codec
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maintainers:
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- Arnaud Pouliquen <arnaud.pouliquen@foss.st.com>
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allOf:
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- $ref: dai-common.yaml#
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properties:
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compatible:
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const: dmic-codec
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'#sound-dai-cells':
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const: 0
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vref-supply:
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description: Phandle to the digital microphone reference supply
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dmicen-gpios:
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description: GPIO specifier for DMIC to control start and stop
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maxItems: 1
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num-channels:
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description: Number of microphones on this DAI
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$ref: /schemas/types.yaml#/definitions/uint32
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minimum: 1
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maximum: 8
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default: 8
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modeswitch-delay-ms:
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description: Delay (in ms) to complete DMIC mode switch
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wakeup-delay-ms:
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description: Delay (in ms) after enabling the DMIC
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required:
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- compatible
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unevaluatedProperties: false
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examples:
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- |
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#include <dt-bindings/gpio/gpio.h>
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dmic {
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compatible = "dmic-codec";
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dmicen-gpios = <&gpio4 3 GPIO_ACTIVE_HIGH>;
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num-channels = <1>;
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wakeup-delay-ms = <50>;
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modeswitch-delay-ms = <35>;
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};
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...
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