[PATCH 2/2 v2] mfd: arizona: Add DT binding documentation for DMIC reference voltages

[Charles Keepax]

Signed-off-by: Charles Keepax <ckeepax@xxxxxxxxxxxxxxxxxxxxxxxxxxx>
---
 Documentation/devicetree/bindings/mfd/arizona.txt |    6 ++++++
 1 files changed, 6 insertions(+), 0 deletions(-)

diff --git a/Documentation/devicetree/bindings/mfd/arizona.txt b/Documentation/devicetree/bindings/mfd/arizona.txt
index bfef000..f1b9b7a 100644
--- a/Documentation/devicetree/bindings/mfd/arizona.txt
+++ b/Documentation/devicetree/bindings/mfd/arizona.txt
@@ -49,6 +49,12 @@ Optional properties:
     input singals. If values less than the number of input signals, elements
     that has not been specifed are set to 0 by default.
 
+  - wlf,dmic-ref : DMIC reference voltage source for each input, can be
+    selected from either MICVDD or one of the MICBIAS's, defines
+    (ARIZONA_DMIC_xxxx) are provided in <dt-bindings/mfd/arizona.txt>. If
+    present, the number of values should be less than or equal to the
+    number of inputs, unspecified inputs will use the chip default.
+
   - DCVDD-supply, MICVDD-supply : Power supplies, only need to be specified if
     they are being externally supplied. As covered in
     Documentation/devicetree/bindings/regulator/regulator.txt
-- 
1.7.2.5

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