diff --git a/Documentation/devicetree/bindings/sound/name-prefix.txt b/Documentation/devicetree/bindings/sound/name-prefix.txt
deleted file mode 100644
index 6457759086570626c78c11b6c1675534444a1662..0000000000000000000000000000000000000000
--- a/Documentation/devicetree/bindings/sound/name-prefix.txt
+++ /dev/null
@@ -1,24 +0,0 @@
-Name prefix:
-
-Card implementing the routing property define the connection between
-audio components as list of string pair. Component using the same
-sink/source names may use the name prefix property to prepend the
-name of their sinks/sources with the provided string.
-
-Optional name prefix property:
-- sound-name-prefix : string using as prefix for the sink/source names of
-		      the component.
-
-Example: Two instances of the same component.
-
-amp0: analog-amplifier@0 {
-	compatible = "simple-audio-amplifier";
-	enable-gpios = <&gpio GPIOH_3 0>;
-	sound-name-prefix = "FRONT";
-};
-
-amp1: analog-amplifier@1 {
-	compatible = "simple-audio-amplifier";
-	enable-gpios = <&gpio GPIOH_4 0>;
-	sound-name-prefix = "BACK";
-};