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[v2,2/2] ASoC: dt-bindings: simple-mux: add idle-state property

Message ID 20241114-simple-mux-idle-state-v2-2-a30cb37d2be2@merzmedtech.de (mailing list archive)
State Accepted
Commit 3b7e11a0116c30848d44429650ad80f9cc3bd963
Headers show
Series ASoc: simple-mux: Allow to specify an idle-state | expand

Commit Message

Hendrik v. Raven Nov. 14, 2024, 11:01 a.m. UTC
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>
---
Changes in v2:
- No changes
---
 Documentation/devicetree/bindings/sound/simple-audio-mux.yaml | 5 +++++
 1 file changed, 5 insertions(+)
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Patch

diff --git a/Documentation/devicetree/bindings/sound/simple-audio-mux.yaml b/Documentation/devicetree/bindings/sound/simple-audio-mux.yaml
index 194ac1d4f4f5f40a9bc44e8cd0acbf2eab708365..9b1bda4852e160618ffd349d2f7c90645d5b3e03 100644
--- a/Documentation/devicetree/bindings/sound/simple-audio-mux.yaml
+++ b/Documentation/devicetree/bindings/sound/simple-audio-mux.yaml
@@ -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>;
     };