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-rw-r--r--Documentation/devicetree/bindings/sound/max98090.txt6
1 files changed, 6 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/sound/max98090.txt b/Documentation/devicetree/bindings/sound/max98090.txt
index aa802a274520..4e3be6682c98 100644
--- a/Documentation/devicetree/bindings/sound/max98090.txt
+++ b/Documentation/devicetree/bindings/sound/max98090.txt
@@ -18,6 +18,12 @@ Optional properties:
- maxim,dmic-freq: Frequency at which to clock DMIC
+- maxim,micbias: Micbias voltage applies to the analog mic, valid voltages value are:
+ 0 - 2.2v
+ 1 - 2.55v
+ 2 - 2.4v
+ 3 - 2.8v
+
Pins on the device (for linking into audio routes):
* MIC1