ASoC: max98357a: Document MAX98357A bindings

Add documentation to the sound directory of the
device-tree bindings for the Maxim MAX98357A audio
DAC.

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/max98357a.txt b/Documentation/devicetree/bindings/sound/max98357a.txt
new file mode 100644 (file)
index 0000000..a7a149a
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+++ b/Documentation/devicetree/bindings/sound/max98357a.txt
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+Maxim MAX98357A audio DAC
+
+This node models the Maxim MAX98357A DAC.
+
+Required properties:
+- compatible   : "maxim,max98357a"
+- sdmode-gpios : GPIO specifier for the GPIO -> DAC SDMODE pin
+
+Example:
+
+max98357a {
+       compatible = "maxim,max98357a";
+       sdmode-gpios = <&qcom_pinmux 25 0>;
+};