1 files changed, 6 insertions, 0 deletions

diff --git a/Documentation/devicetree/bindings/sound/tlv320aic3x.txt b/Documentation/devicetree/bindings/sound/tlv320aic3x.txt
index e7b98f41fa5f..f47c3f589fd0 100644
--- a/Documentation/devicetree/bindings/sound/tlv320aic3x.txt
+++ b/Documentation/devicetree/bindings/sound/tlv320aic3x.txt
@@ -11,6 +11,12 @@ Optional properties:
 
 - gpio-reset - gpio pin number used for codec reset
 - ai3x-gpio-func - <array of 2 int> - AIC3X_GPIO1 & AIC3X_GPIO2 Functionality
+- ai3x-micbias-vg - MicBias Voltage required.
+        1 - MICBIAS output is powered to 2.0V,
+        2 - MICBIAS output is powered to 2.5V,
+        3 - MICBIAS output is connected to AVDD,
+        If this node is not mentioned or if the value is incorrect, then MicBias
+        is powered down.
 
 Example: