diff --git a/Documentation/devicetree/bindings/sound/renesas,rsnd.txt b/Documentation/devicetree/bindings/sound/renesas,rsnd.txt
index 7c6d33f29796..a44e9179faf5 100644
--- a/Documentation/devicetree/bindings/sound/renesas,rsnd.txt
+++ b/Documentation/devicetree/bindings/sound/renesas,rsnd.txt
@@ -7,14 +7,23 @@ Required properties:
 				  required register is
 				   SRU/ADG/SSI      if generation1
 				   SRU/ADG/SSIU/SSI if generation2
-- rcar_sound,ssi		: SSI subnode
-- rcar_sound,scu		: SCU subnode
-- rcar_sound,dai		: DAI subnode
+- rcar_sound,ssi		: Should contain SSI feature.
+				  The number of SSI subnode should be same as HW.
+				  see below for detail.
+- rcar_sound,src		: Should contain SRC feature.
+				  The number of SRC subnode should be same as HW.
+				  see below for detail.
+- rcar_sound,dai		: DAI contents.
+				  The number of DAI subnode should be same as HW.
+				  see below for detail.
 
 SSI subnode properties:
 - interrupts			: Should contain SSI interrupt for PIO transfer
 - shared-pin			: if shared clock pin
 
+SRC subnode properties:
+no properties at this point
+
 DAI subnode properties:
 - playback			: list of playback modules
 - capture			: list of capture  modules
diff --git a/sound/soc/soc-core.c b/sound/soc/soc-core.c
index b322cf294d06..daca4b7de45c 100644
--- a/sound/soc/soc-core.c
+++ b/sound/soc/soc-core.c
@@ -1253,7 +1253,7 @@ static int soc_post_component_init(struct snd_soc_card *card,
 	struct snd_soc_dai_link *dai_link = NULL;
 	struct snd_soc_aux_dev *aux_dev = NULL;
 	struct snd_soc_pcm_runtime *rtd;
-	const char *temp, *name;
+	const char *name;
 	int ret = 0;
 
 	if (!dailess) {
@@ -1267,10 +1267,6 @@ static int soc_post_component_init(struct snd_soc_card *card,
 	}
 	rtd->card = card;
 
-	/* machine controls, routes and widgets are not prefixed */
-	temp = codec->name_prefix;
-	codec->name_prefix = NULL;
-
 	/* do machine specific initialization */
 	if (!dailess && dai_link->init)
 		ret = dai_link->init(rtd);
@@ -1280,7 +1276,6 @@ static int soc_post_component_init(struct snd_soc_card *card,
 		dev_err(card->dev, "ASoC: failed to init %s: %d\n", name, ret);
 		return ret;
 	}
-	codec->name_prefix = temp;
 
 	/* register the rtd device */
 	rtd->codec = codec;