ASoC: rsrc-card: rename rsrc-card to simple-scu-card phase3

rsrc-card which is using DPCM feature was created for Renesas sound.
But not only Renesas, but many SoC can use this driver, because
it is based on simple-card driver.
To use it as more open driver, rsrc-card will be renamed to
simple-scu-card. In order to easy patch review, as 3rd step,
this patch moves rsrc-card driver to generic folder.

Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Signed-off-by: Mark Brown <broonie@kernel.org>

1 files changed, 80 insertions, 0 deletions

diff --git a/Documentation/devicetree/bindings/sound/simple-scu-card.txt b/Documentation/devicetree/bindings/sound/simple-scu-card.txt
new file mode 100644
index 000000000000..ecb4a249fe6e
--- /dev/null
+++ b/Documentation/devicetree/bindings/sound/simple-scu-card.txt
@@ -0,0 +1,80 @@
+ASoC simple SCU Sound Card
+
+Simple-Card specifies audio DAI connections of SoC <-> codec.
+
+Required properties:
+
+- compatible				: "simple-scu-audio-card"
+					  "renesas,rsrc-card"
+
+Optional properties:
+
+- simple-audio-card,name		: User specified audio sound card name, one string
+					  property.
+- simple-audio-card,cpu			: CPU   sub-node
+- simple-audio-card,codec		: CODEC sub-node
+
+Optional subnode properties:
+
+- simple-audio-card,format		: CPU/CODEC common audio format.
+					  "i2s", "right_j", "left_j" , "dsp_a"
+					  "dsp_b", "ac97", "pdm", "msb", "lsb"
+- simple-audio-card,frame-master	: Indicates dai-link frame master.
+					  phandle to a cpu or codec subnode.
+- simple-audio-card,bitclock-master	: Indicates dai-link bit clock master.
+					  phandle to a cpu or codec subnode.
+- simple-audio-card,bitclock-inversion	: bool property. Add this if the
+					  dai-link uses bit clock inversion.
+- simple-audio-card,frame-inversion	: bool property. Add this if the
+					  dai-link uses frame clock inversion.
+- simple-audio-card,convert-rate	: platform specified sampling rate convert
+- simple-audio-card,convert-channels	: platform specified converted channel size (2 - 8 ch)
+- simple-audio-card,prefix		: see audio-routing
+- simple-audio-card,routing		: A list of the connections between audio components.
+					  Each entry is a pair of strings, the first being the connection's sink,
+					  the second being the connection's source. Valid names for sources.
+					  use audio-prefix if some components is using same sink/sources naming.
+					  it can be used if compatible was "renesas,rsrc-card";
+
+Required CPU/CODEC subnodes properties:
+
+- sound-dai				: phandle and port of CPU/CODEC
+
+Optional CPU/CODEC subnodes properties:
+
+- clocks / system-clock-frequency	: specify subnode's clock if needed.
+					  it can be specified via "clocks" if system has
+					  clock node (= common clock), or "system-clock-frequency"
+					  (if system doens't support common clock)
+					  If a clock is specified, it is
+					  enabled with clk_prepare_enable()
+					  in dai startup() and disabled with
+					  clk_disable_unprepare() in dai
+					  shutdown().
+
+Example
+
+sound {
+	compatible = "simple-scu-audio-card";
+
+	simple-audio-card,name = "rsnd-ak4643";
+	simple-audio-card,format = "left_j";
+	simple-audio-card,format = "left_j";
+	simple-audio-card,bitclock-master = <&sndcodec>;
+	simple-audio-card,frame-master = <&sndcodec>;
+
+	simple-audio-card,convert-rate = <48000>; /* see audio_clk_a */
+
+	simple-audio-card,prefix = "ak4642";
+	simple-audio-card,routing = "ak4642 Playback", "DAI0 Playback",
+			"DAI0 Capture", "ak4642 Capture";
+
+	sndcpu: simple-audio-card,cpu {
+		sound-dai = <&rcar_sound>;
+	};
+
+	sndcodec: simple-audio-card,codec {
+		sound-dai = <&ak4643>;
+		system-clock-frequency = <11289600>;
+	};
+};