diff --git a/Documentation/devicetree/bindings/sound/rt5640.txt b/Documentation/devicetree/bindings/sound/rt5640.txt
index bac4d9ac1edc8c45df26134e59c9537b1ce6b3af..5d062a56799668d4c496655257a65105d242cb9b 100644
--- a/Documentation/devicetree/bindings/sound/rt5640.txt
+++ b/Documentation/devicetree/bindings/sound/rt5640.txt
@@ -24,9 +24,9 @@ Pins on the device (for linking into audio routes) for RT5639/RT5640:
   * DMIC2
   * MICBIAS1
   * IN1P
-  * IN1R
+  * IN1N
   * IN2P
-  * IN2R
+  * IN2N
   * HPOL
   * HPOR
   * LOUTL