int rsnd_runtime_is_ssi_multi(struct rsnd_dai_stream *io);
 int rsnd_runtime_is_ssi_tdm(struct rsnd_dai_stream *io);
 
+/*
+ * DT
+ */
+#define rsnd_parse_of_node(priv, node)                                 \
+       of_get_child_by_name(rsnd_priv_to_dev(priv)->of_node, node)
+#define RSND_NODE_DAI  "rcar_sound,dai"
+#define RSND_NODE_SSI  "rcar_sound,ssi"
+#define RSND_NODE_SRC  "rcar_sound,src"
+#define RSND_NODE_CTU  "rcar_sound,ctu"
+#define RSND_NODE_MIX  "rcar_sound,mix"
+#define RSND_NODE_DVC  "rcar_sound,dvc"
+
 /*
  *     R-Car sound DAI
  */
 int rsnd_dai_connect(struct rsnd_mod *mod,
                     struct rsnd_dai_stream *io,
                     enum rsnd_mod_type type);
-#define rsnd_dai_of_node(priv)                                         \
-       of_get_child_by_name(rsnd_priv_to_dev(priv)->of_node, "rcar_sound,dai")
+#define rsnd_dai_of_node(priv) rsnd_parse_of_node(priv, RSND_NODE_DAI)
 
 /*
  *     R-Car Gen1/Gen2
        __rsnd_ssi_is_pin_sharing(rsnd_io_to_mod_ssi(io))
 int __rsnd_ssi_is_pin_sharing(struct rsnd_mod *mod);
 
-#define rsnd_ssi_of_node(priv)                                         \
-       of_get_child_by_name(rsnd_priv_to_dev(priv)->of_node, "rcar_sound,ssi")
+#define rsnd_ssi_of_node(priv) rsnd_parse_of_node(priv, RSND_NODE_SSI)
 void rsnd_parse_connect_ssi(struct rsnd_dai *rdai,
                            struct device_node *playback,
                            struct device_node *capture);
                               struct rsnd_dai_stream *io,
                               int is_in);
 
-#define rsnd_src_of_node(priv)                                         \
-       of_get_child_by_name(rsnd_priv_to_dev(priv)->of_node, "rcar_sound,src")
+#define rsnd_src_of_node(priv) rsnd_parse_of_node(priv, RSND_NODE_SRC)
 #define rsnd_parse_connect_src(rdai, playback, capture)                        \
        rsnd_parse_connect_common(rdai, rsnd_src_mod_get,               \
                                  rsnd_src_of_node(rsnd_rdai_to_priv(rdai)), \
 void rsnd_ctu_remove(struct rsnd_priv *priv);
 int rsnd_ctu_converted_channel(struct rsnd_mod *mod);
 struct rsnd_mod *rsnd_ctu_mod_get(struct rsnd_priv *priv, int id);
-#define rsnd_ctu_of_node(priv)                                         \
-       of_get_child_by_name(rsnd_priv_to_dev(priv)->of_node, "rcar_sound,ctu")
+#define rsnd_ctu_of_node(priv) rsnd_parse_of_node(priv, RSND_NODE_CTU)
 #define rsnd_parse_connect_ctu(rdai, playback, capture)                        \
        rsnd_parse_connect_common(rdai, rsnd_ctu_mod_get,               \
                                  rsnd_ctu_of_node(rsnd_rdai_to_priv(rdai)), \
 int rsnd_mix_probe(struct rsnd_priv *priv);
 void rsnd_mix_remove(struct rsnd_priv *priv);
 struct rsnd_mod *rsnd_mix_mod_get(struct rsnd_priv *priv, int id);
-#define rsnd_mix_of_node(priv)                                         \
-       of_get_child_by_name(rsnd_priv_to_dev(priv)->of_node, "rcar_sound,mix")
+#define rsnd_mix_of_node(priv) rsnd_parse_of_node(priv, RSND_NODE_MIX)
 #define rsnd_parse_connect_mix(rdai, playback, capture)                        \
        rsnd_parse_connect_common(rdai, rsnd_mix_mod_get,               \
                                  rsnd_mix_of_node(rsnd_rdai_to_priv(rdai)), \
 int rsnd_dvc_probe(struct rsnd_priv *priv);
 void rsnd_dvc_remove(struct rsnd_priv *priv);
 struct rsnd_mod *rsnd_dvc_mod_get(struct rsnd_priv *priv, int id);
-#define rsnd_dvc_of_node(priv)                                         \
-       of_get_child_by_name(rsnd_priv_to_dev(priv)->of_node, "rcar_sound,dvc")
+#define rsnd_dvc_of_node(priv) rsnd_parse_of_node(priv, RSND_NODE_DVC)
 #define rsnd_parse_connect_dvc(rdai, playback, capture)                        \
        rsnd_parse_connect_common(rdai, rsnd_dvc_mod_get,               \
                                  rsnd_dvc_of_node(rsnd_rdai_to_priv(rdai)), \