diff --git a/Documentation/devicetree/bindings/sound/renesas,rsnd.txt b/Documentation/devicetree/bindings/sound/renesas,rsnd.txt
index 47dc8190f0a715643d49a606bdb4adea8c3c0d59..4d19d2bd628664d31fb91666fb3facd211dca69f 100644
--- a/Documentation/devicetree/bindings/sound/renesas,rsnd.txt
+++ b/Documentation/devicetree/bindings/sound/renesas,rsnd.txt
@@ -327,8 +327,13 @@ SSI subnode properties:
 - no-busif			: BUSIF is not ussed when [mem -> SSI] via DMA case
 - dma				: Should contain Audio DMAC entry
 - dma-names			: SSI  case "rx"  (=playback), "tx"  (=capture)
+				  Deprecated: see SSIU subnode properties
 				  SSIU case "rxu" (=playback), "txu" (=capture)
 
+SSIU subnode properties:
+- dma				: Should contain Audio DMAC entry
+- dma-names			: "rx" (=playback), "tx" (=capture)
+
 SRC subnode properties:
 - dma				: Should contain Audio DMAC entry
 - dma-names			: "rx" (=playback), "tx" (=capture)