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https://git.kernel.org/pub/scm/linux/kernel/git/chenhuacai/linux-loongson
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3b7e11a011
simple-mux immediately activates the new output, even when it is powered down. This can be undesirable in some cases, for example when a mechanical relais is used. Adds "idle-state" property from the mux controller to select the output state to be used when the mux is powered down. Signed-off-by: Hendrik v. Raven <h.v.raven@merzmedtech.de> Link: https://patch.msgid.link/20241114-simple-mux-idle-state-v2-2-a30cb37d2be2@merzmedtech.de Signed-off-by: Mark Brown <broonie@kernel.org>
52 lines
1.2 KiB
YAML
52 lines
1.2 KiB
YAML
# SPDX-License-Identifier: (GPL-2.0+ OR BSD-2-Clause)
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%YAML 1.2
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---
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$id: http://devicetree.org/schemas/sound/simple-audio-mux.yaml#
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$schema: http://devicetree.org/meta-schemas/core.yaml#
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title: Simple Audio Multiplexer
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maintainers:
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- Alexandre Belloni <aleandre.belloni@bootlin.com>
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description: |
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Simple audio multiplexers are driven using gpios, allowing to select which of
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their input line is connected to the output line.
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allOf:
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- $ref: dai-common.yaml#
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properties:
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compatible:
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const: simple-audio-mux
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mux-gpios:
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description: |
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GPIOs used to select the input line.
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state-labels:
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description: State of input line. default is "Input 1", "Input 2"
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$ref: /schemas/types.yaml#/definitions/string-array
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maxItems: 2
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idle-state:
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description: If present specifies the state when the mux is powered down
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$ref: /schemas/mux/mux-controller.yaml#/properties/idle-state
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sound-name-prefix: true
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required:
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- compatible
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- mux-gpios
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additionalProperties: false
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examples:
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- |
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mux {
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compatible = "simple-audio-mux";
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mux-gpios = <&gpio 3 0>;
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state-labels = "Label_A", "Label_B";
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idle-state = <0>;
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};
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