[PATCH] Doc: mfd: as3722: Add details of optional missing property

[Laxman Dewangan]

Add details of following properties which are used on driver but
not documented on DT binding document.
- ams,enable-internal-int-pullup
- ams,enable-internal-i2c-pullup

Signed-off-by: Laxman Dewangan <ldewangan@xxxxxxxxxx>
Reported-by: Lee Jones <lee.jones@xxxxxxxxxx>
---
 Documentation/devicetree/bindings/mfd/as3722.txt | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/Documentation/devicetree/bindings/mfd/as3722.txt b/Documentation/devicetree/bindings/mfd/as3722.txt
index 8edcb9b..4f64b2a 100644
--- a/Documentation/devicetree/bindings/mfd/as3722.txt
+++ b/Documentation/devicetree/bindings/mfd/as3722.txt
@@ -13,6 +13,14 @@ Required properties:
   The second cell is the flags, encoded as the trigger masks from binding document
 	interrupts.txt, using dt-bindings/irq.
 
+Optional properties:
+--------------------
+- ams,enable-internal-int-pullup: Boolean property, to enable internal pullup on
+	interrupt pin. Missing this will disable internal pullup on INT pin.
+- ams,enable-internal-i2c-pullup: Boolean property, to enable internal pullup on
+	i2c scl/sda pins. Missing this will disable internal pullup on i2c
+	scl/sda lines.
+
 Optional submodule and their properties:
 =======================================
 
-- 
1.8.1.5

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