ASoC: binding: add widgets.txt

Suggested-by: Mark Brown <broonie@linaro.org>
Signed-off-by: Xiubo Li <Li.Xiubo@freescale.com>
Signed-off-by: Mark Brown <broonie@linaro.org>

diff --git a/Documentation/devicetree/bindings/sound/widgets.txt b/Documentation/devicetree/bindings/sound/widgets.txt
new file mode 100644 (file)
index 0000000..b6de5ba
--- /dev/null
+++ b/Documentation/devicetree/bindings/sound/widgets.txt
@@ -0,0 +1,20 @@
+Widgets:
+
+This mainly specifies audio off-codec DAPM widgets.
+
+Each entry is a pair of strings in DT:
+
+       "template-wname", "user-supplied-wname"
+
+The "template-wname" being the template widget name and currently includes:
+"Microphone", "Line", "Headphone" and "Speaker".
+
+The "user-supplied-wname" being the user specified widget name.
+
+For instance:
+       simple-audio-widgets =
+               "Microphone", "Microphone Jack",
+               "Line", "Line In Jack",
+               "Line", "Line Out Jack",
+               "Headphone", "Headphone Jack",
+               "Speaker", "Speaker External";