Add DT details for using the clocks from ams AS3722.

Signed-off-by: Laxman Dewangan <[email protected]>
---
Changes from V1:
- This is new patch of series which was part of code change, splitting it
 on different change.

 Documentation/devicetree/bindings/mfd/as3722.txt |    9 +++++++++
 1 files changed, 9 insertions(+), 0 deletions(-)

diff --git a/Documentation/devicetree/bindings/mfd/as3722.txt 
b/Documentation/devicetree/bindings/mfd/as3722.txt
index fc2191e..e782f39 100644
--- a/Documentation/devicetree/bindings/mfd/as3722.txt
+++ b/Documentation/devicetree/bindings/mfd/as3722.txt
@@ -112,6 +112,15 @@ Following are properties of regulator subnode.
                ams,enable-tracking: Enable tracking with SD1, only supported
                        by LDO3.
 
+Clock:
+======
+AS3722 supports one 32KHz clock to output from device. The clock control is
+provided through the clock driver.
+This binding uses the common clock binding ./clock-bindings.txt.
+The device node should have the optional properties to support the clock:
+#clock-cells: from common clock binding; shall be set to 1. The clock id for
+       single clock output is 0.
+
 Example:
 --------
 #include <dt-bindings/mfd/as3722.h>
-- 
1.7.1.1

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