ASoC: qcom: Document Storm bindings

Add documentation to the sound directory of the
device-tree bindings for the soundcard of the
Storm board.

Signed-off-by: Kenneth Westfield <kwestfie@codeaurora.org>
Acked-by: Banajit Goswami <bgoswami@codeaurora.org>
Signed-off-by: Mark Brown <broonie@kernel.org>

diff --git a/Documentation/devicetree/bindings/sound/storm.txt b/Documentation/devicetree/bindings/sound/storm.txt
new file mode 100644 (file)
index 0000000..062a4c1
--- /dev/null
+++ b/Documentation/devicetree/bindings/sound/storm.txt
@@ -0,0 +1,23 @@
+* Sound complex for Storm boards
+
+Models a soundcard for Storm boards with the Qualcomm Technologies IPQ806x SOC
+connected to a MAX98357A DAC via I2S.
+
+Required properties:
+
+- compatible   : "google,storm-audio"
+- cpu          : Phandle of the CPU DAI
+- codec                : Phandle of the codec DAI
+
+Optional properties:
+
+- qcom,model   : The user-visible name of this sound card.
+
+Example:
+
+sound {
+       compatible = "google,storm-audio";
+       qcom,model = "ipq806x-storm";
+       cpu = <&lpass_cpu>;
+       codec = <&max98357a>;
+};