From: Kuninori Morimoto <kuninori.morimoto...@renesas.com>

Signed-off-by: Kuninori Morimoto <kuninori.morimoto...@renesas.com>
---
 .../bindings/sound/simple-graph-scu-card.txt       | 66 ++++++++++++++++++++++
 1 file changed, 66 insertions(+)
 create mode 100644 
Documentation/devicetree/bindings/sound/simple-graph-scu-card.txt

diff --git a/Documentation/devicetree/bindings/sound/simple-graph-scu-card.txt 
b/Documentation/devicetree/bindings/sound/simple-graph-scu-card.txt
new file mode 100644
index 0000000..81f64e0
--- /dev/null
+++ b/Documentation/devicetree/bindings/sound/simple-graph-scu-card.txt
@@ -0,0 +1,66 @@
+Simple-Graph-SCU-Card:
+
+Simple-Graph-SCU-Card specifies audio DAI connections of SoC <-> codec.
+It is based on common bindings for device graphs.
+see ${LINUX}/Documentation/devicetree/bindings/graph.txt
+
+Basically, Simple-Graph-SCU-Card is same as Simple-Card / Simple-Graph-Card.
+see ${LINUX}/Documentation/devicetree/bindings/sound/simple-card.txt
+    ${LINUX}/Documentation/devicetree/bindings/sound/simple-graph-card.txt
+
+Main difference is that Simple-Graph-SCU-Card can use multi CPU.
+
+Required properties:
+
+- compatible                           : "asoc-simple-graph-scu-card";
+- type                                 : "sound";
+- simple-audio-card,routing            : see simple-card.txt
+
+Example
+
+ak4643: codec@12 {
+       compatible = "asahi-kasei,ak4643";
+       ...
+       port {
+               type = "sound";
+               ak4643_fe: endpoint@0 {
+                       remote-endpoint = <&rsnd_fe>;
+                       clocks = <&audio_clock>;
+               };
+               ak4643_be: endpoint@1 {
+                       remote-endpoint = <&rsnd_be>;
+               };
+       };
+};
+
+rcar_sound {
+       ...
+       ports {
+               compatible = "asoc-simple-graph-scu-card";
+               simple-audio-card,name = "graph-sound";
+               simple-audio-card,format = "left_j";
+               simple-audio-card,bitclock-master = <&rsnd_fe>;
+               simple-audio-card,frame-master = <&rsnd_fe>;
+               simple-audio-card,convert-rate = <48000>;
+               simple-audio-card,convert-channels = <2>;
+               simple-audio-card,prefix = "ak4642";
+               simple-audio-card,routing =
+                               "ak4642 Playback", "DAI0 Playback",
+                               "ak4642 Playback", "DAI1 Playback";
+
+               port@0 {
+                       type = "sound";
+                       rsnd_fe: endpoint@0 {
+                               remote-endpoint = <&ak4643_fe>;
+                               playback = <&src1 &ctu02 &mix0 &dvc0 &ssi0>;
+                       };
+               };
+               port@1 {
+                       type = "sound";
+                       rsnd_be: endpoint@1 {
+                               remote-endpoint = <&ak4643_be>;
+                               playback = <&src2 &ctu03 &mix0 &dvc0 &ssi0>;
+                       };
+               };
+       };
+};
-- 
1.9.1

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