linux-kernel - [PATCH 20/23] ASoC: add simple-graph-card document

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Message-ID: <87zim32xbo.wl%kuninori.morimoto.gx@renesas.com>
Date:   Mon, 17 Oct 2016 08:38:29 +0000
From:   Kuninori Morimoto <kuninori.morimoto.gx@...esas.com>
To:     Rob Herring <robh+dt@...nel.org>, Mark Brown <broonie@...nel.org>
CC:     Linux-ALSA <alsa-devel@...a-project.org>,
        Liam Girdwood <lgirdwood@...il.com>,
        Simon <horms@...ge.net.au>,
        Laurent <laurent.pinchart@...asonboard.com>,
        Guennadi <g.liakhovetski@....de>,
        Grant Likely <grant.likely@...aro.org>,
        Frank Rowand <frowand.list@...il.com>,
        Linux-DT <devicetree@...r.kernel.org>,
        Linux-Kernel <linux-kernel@...r.kernel.org>
Subject: [PATCH 20/23] ASoC: add simple-graph-card document


From: Kuninori Morimoto <kuninori.morimoto.gx@...esas.com>

Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@...esas.com>
---
 .../bindings/sound/simple-graph-card.txt           | 65 ++++++++++++++++++++++
 1 file changed, 65 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/sound/simple-graph-card.txt

diff --git a/Documentation/devicetree/bindings/sound/simple-graph-card.txt b/Documentation/devicetree/bindings/sound/simple-graph-card.txt
new file mode 100644
index 0000000..c191c0d
--- /dev/null
+++ b/Documentation/devicetree/bindings/sound/simple-graph-card.txt
@@ -0,0 +1,65 @@
+Simple-Graph-Card:
+
+Simple-Graph-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-Card is same as Simple-Card, but using graph style.
+see ${LINUX}/Documentation/devicetree/bindings/sound/simple-card.txt
+
+Below are same as Simple-Card.
+
+- simple-audio-card,name
+- simple-audio-card,widgets
+- simple-audio-card,routing
+- simple-audio-card,mclk-fs
+- simple-audio-card,hp-det-gpio
+- simple-audio-card,mic-det-gpio
+- simple-audio-card,format
+- simple-audio-card,frame-master
+- simple-audio-card,bitclock-master
+- simple-audio-card,bitclock-inversion
+- simple-audio-card,frame-inversion
+- simple-audio-card,mclk-fs
+- simple-audio-card,dai-tdm-slot-num
+- simple-audio-card,dai-tdm-slot-width
+- clocks / system-clock-frequency
+
+This Simple-Graph-Card should be located as CPU driver's port[s].
+And then, CPU driver need to probe it by itself.
+
+Required properties:
+
+- compatible				: "asoc-simple-graph-card";
+- type					: "sound";
+
+Example
+
+ak4643: codec@12 {
+	compatible = "asahi-kasei,ak4643";
+	...
+	port {
+		type = "sound";
+		ak4643_port: endpoint {
+			remote-endpoint = <&rcar_ak4643_port>;
+			clocks = <&audio_clock>;
+		};
+	};
+};
+
+rcar_sound {
+	...
+	port {
+		compatible = "asoc-simple-graph-card";
+
+		simple-audio-card,format = "left_j";
+		simple-audio-card,bitclock-master = <&ak4643_port>;
+		simple-audio-card,frame-master = <&ak4643_port>;
+		type = "sound";
+		rcar_ak4643_port: endpoint {
+			remote-endpoint = <&ak4643_port>;
+			playback = <&ssi0 &src2 &dvc0>;
+			capture  = <&ssi1 &src3 &dvc1>;
+		};
+	};
+};
-- 
1.9.1