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ASoC: dt-bindings: simple-mux: add idle-state property

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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>
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Hendrik v. Raven 2024-11-14 12:01:26 +01:00 • committed by Mark Brown
parent 2b974284aa
commit 3b7e11a011
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5
Documentation/devicetree/bindings/sound/simple-audio-mux.yaml
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@ -29,6 +29,10 @@ properties:
$ref: /schemas/types.yaml#/definitions/string-array
maxItems: 2
idle-state:
description: If present specifies the state when the mux is powered down
$ref: /schemas/mux/mux-controller.yaml#/properties/idle-state
sound-name-prefix: true
required:
@ -43,4 +47,5 @@ examples:
compatible = "simple-audio-mux";
mux-gpios = <&gpio 3 0>;
state-labels = "Label_A", "Label_B";
idle-state = <0>;
};