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-rw-r--r--Documentation/devicetree/bindings/sound/ts3a227e.txt5
1 files changed, 5 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/sound/ts3a227e.txt b/Documentation/devicetree/bindings/sound/ts3a227e.txt
index e8bf23eb1803..a836881d9608 100644
--- a/Documentation/devicetree/bindings/sound/ts3a227e.txt
+++ b/Documentation/devicetree/bindings/sound/ts3a227e.txt
@@ -13,6 +13,11 @@ Required properties:
- interrupt-parent: The parent interrupt controller
- interrupts: Interrupt number for /INT pin from the 227e
+Optional properies:
+ - ti,micbias: Intended MICBIAS voltage (datasheet section 9.6.7).
+ Select 0/1/2/3/4/5/6/7 to specify MACBIAS voltage
+ 2.1V/2.2V/2.3V/2.4V/2.5V/2.6V/2.7V/2.8V
+ Default value is "1" (2.2V).
Examples:
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