[PATCH 2/2] dt-bindings: sound: rt5640: Allow to describe how LOUT is wired

[Jarrah Gosbell]

From: Ondrej Jirman <megi@xxxxxx>

Depending on HW design, som boards may expect mono differential output
on LOUT. Describe a property that enables it.

Signed-off-by: Ondrej Jirman <megi@xxxxxx>
Signed-off-by: Jarrah Gosbell <kernel@undef.tools>
---
 Documentation/devicetree/bindings/sound/rt5640.txt | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/Documentation/devicetree/bindings/sound/rt5640.txt b/Documentation/devicetree/bindings/sound/rt5640.txt
index ff1228713f7e..0c398581d52b 100644
--- a/Documentation/devicetree/bindings/sound/rt5640.txt
+++ b/Documentation/devicetree/bindings/sound/rt5640.txt
@@ -20,6 +20,9 @@ Optional properties:
 - realtek,in3-differential
   Boolean. Indicate MIC1/2/3 input are differential, rather than single-ended.
 
+- realtek,lout-differential
+  Boolean. Indicate LOUT output is differential, rather than stereo.
+
 - realtek,ldo1-en-gpios : The GPIO that controls the CODEC's LDO1_EN pin.
 
 - realtek,dmic1-data-pin
-- 
2.35.1