ASoC: arizona: Add device tree binding doc for volume limits

Signed-off-by: Charles Keepax <[email protected]>
Acked-by: Rob Herring <[email protected]>
Signed-off-by: Mark Brown <[email protected]>

diff --git a/Documentation/devicetree/bindings/sound/wlf,arizona.txt b/Documentation/devicetree/bindings/sound/wlf,arizona.txt
index 4e67224488d82adbdb2478a52e4959191d9b0661..e172c62dc2dffd58d64b9810af849ce2f6e863b7 100644 (file)
--- a/Documentation/devicetree/bindings/sound/wlf,arizona.txt
+++ b/Documentation/devicetree/bindings/sound/wlf,arizona.txt
@@ -47,3 +47,7 @@ Optional properties:
     See the datasheet for values.
     The second cell is ignored for codecs that do not have OUT6 (wm5102, wm8997,
     wm8998, wm1814)
     See the datasheet for values.
     The second cell is ignored for codecs that do not have OUT6 (wm5102, wm8997,
     wm8998, wm1814)

+
+  - wlf,out-volume-limit : The volume limit value that should be applied to each
+    output channel. See the datasheet for exact values. Channels are specified
+    in the order OUT1L, OUT1R, OUT2L, OUT2R, etc.