ASoC: wm8741: Add differential mono mode support

[deliverable/linux.git] / Documentation / devicetree / bindings / sound / wm8741.txt

diff --git a/Documentation/devicetree/bindings/sound/wm8741.txt b/Documentation/devicetree/bindings/sound/wm8741.txt
index 74bda58c1bcffb01cd1648f605cac031907a5ce3..a133154087194cb90a2056ba6f927d67b6e49ba4 100644 (file)
--- a/Documentation/devicetree/bindings/sound/wm8741.txt
+++ b/Documentation/devicetree/bindings/sound/wm8741.txt
@@ -10,9 +10,20 @@ Required properties:
   - reg : the I2C address of the device for I2C, the chip select
           number for SPI.
 
+Optional properties:
+
+  - diff-mode: Differential output mode configuration. Default value for field
+    DIFF in register R8 (MODE_CONTROL_2). If absent, the default is 0, shall be:
+    0 = stereo
+    1 = mono left
+    2 = stereo reversed
+    3 = mono right
+
 Example:
 
 codec: wm8741@1a {
        compatible = "wlf,wm8741";
        reg = <0x1a>;
+
+       diff-mode = <3>;
 };