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-rw-r--r--Documentation/devicetree/bindings/sound/rt5640.txt3
1 files changed, 3 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/sound/rt5640.txt b/Documentation/devicetree/bindings/sound/rt5640.txt
index 9e62f6eb348f..57fe64643050 100644
--- a/Documentation/devicetree/bindings/sound/rt5640.txt
+++ b/Documentation/devicetree/bindings/sound/rt5640.txt
@@ -12,6 +12,9 @@ Required properties:
Optional properties:
+- clocks: The phandle of the master clock to the CODEC
+- clock-names: Should be "mclk"
+
- realtek,in1-differential
- realtek,in2-differential
- realtek,in3-differential