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-rw-r--r--Documentation/devicetree/bindings/sound/rt5640.txt5
1 files changed, 4 insertions, 1 deletions
diff --git a/Documentation/devicetree/bindings/sound/rt5640.txt b/Documentation/devicetree/bindings/sound/rt5640.txt
index 5d062a5..9e62f6e 100644
--- a/Documentation/devicetree/bindings/sound/rt5640.txt
+++ b/Documentation/devicetree/bindings/sound/rt5640.txt
@@ -14,7 +14,8 @@ Optional properties:
- realtek,in1-differential
- realtek,in2-differential
- Boolean. Indicate MIC1/2 input are differential, rather than single-ended.
+- realtek,in3-differential
+ Boolean. Indicate MIC1/2/3 input are differential, rather than single-ended.
- realtek,ldo1-en-gpios : The GPIO that controls the CODEC's LDO1_EN pin.
@@ -27,6 +28,8 @@ Pins on the device (for linking into audio routes) for RT5639/RT5640:
* IN1N
* IN2P
* IN2N
+ * IN3P
+ * IN3N
* HPOL
* HPOR
* LOUTL
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