[PATCH RFC 6/6] ASoC: samsung: Add DT bindings documentation for TM2 sound subsystem

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This patch adds DT binding documentation for Exnos5433 based TM2
and TM2E boards sound subsystem.

Signed-off-by: Sylwester Nawrocki <s.nawrocki@xxxxxxxxxxx>
---
 .../bindings/sound/samsung,tm2-wm5110.txt          | 39 ++++++++++++++++++++++
 1 file changed, 39 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/sound/samsung,tm2-wm5110.txt

diff --git a/Documentation/devicetree/bindings/sound/samsung,tm2-wm5110.txt b/Documentation/devicetree/bindings/sound/samsung,tm2-wm5110.txt
new file mode 100644
index 0000000..32f69fcc
--- /dev/null
+++ b/Documentation/devicetree/bindings/sound/samsung,tm2-wm5110.txt
@@ -0,0 +1,39 @@
+Samsung Exynos5433 TM2(E) audio complex with WM5110 codec
+
+Required properties:
+
+ - compatible : "samsung,tm2-audio"
+ - samsung,model : the user-visible name of this sound complex
+ - clocks : must contain an entry for each entry in clock-names,
+   see ../clocks/clock-bindings.txt for details
+ - clock-names : must include the following entries:
+   "mclk1", "mclk2"
+ - samsung,i2s-controller : the phandle of the I2S controller
+ - samsung,speaker-amplifier : the phandle of the MAX98504 amplifier
+ - samsung,audio-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 and sinks are the WM5110's and MAX98504's
+   pins and the jacks on the board:
+   HP, SPK, Main Mic, Sub Mic, Third Mic, Headset Mic.
+ - mic-bias-gpios : GPIO pin that enables the Main Mic bias regulator
+
+Example:
+
+sound {
+	compatible = "samsung,tm2-audio";
+	clocks = <&pmu_system_controller 0>, <&s2mps13_osc 2>;
+	clock-names = "mclk1", "mclk2";
+	samsung,i2s-controller = <&i2s0>;
+	samsung,speaker-amplifier = <&max98504>;
+	samsung,model = "wm5110";
+	mic-bias-gpios = <&gpr3 2 0>;
+	samsung,audio-routing =
+		"HP", "HPOUT1L",
+		"HP", "HPOUT1R",
+		"SPK", "SPKOUT",
+		"SPKOUT", "HPOUT2L",
+		"SPKOUT", "HPOUT2R",
+		"Main Mic", "MICBIAS2",
+		"IN1R", "Main Mic";
+};
-- 
1.9.1

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