[PATCH 07/13] bindings: gpio-sx150x: Document "semtech,io-pull*" bindings

[Andrey Smirnov <andrew.smirnov@xxxxxxxxx>]

Signed-off-by: Andrey Smirnov <andrew.smirnov@xxxxxxxxx>
---
 Documentation/devicetree/bindings/gpio/gpio-sx150x.txt | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/Documentation/devicetree/bindings/gpio/gpio-sx150x.txt b/Documentation/devicetree/bindings/gpio/gpio-sx150x.txt
index 02b92ae..7574137 100644
--- a/Documentation/devicetree/bindings/gpio/gpio-sx150x.txt
+++ b/Documentation/devicetree/bindings/gpio/gpio-sx150x.txt
@@ -35,6 +35,14 @@ Optional properties:
   		       polarity. For chips with fewer than 16 IO pins,
   		       high-end bits are ignored.
 
+- semtech,io-pullup:
+- semtech,io-pulldown: A bit-mask which enables-or disables the
+  		       pull-up (pull-down) resistor for each IO line
+  		       in the expander. Setting the bit at position n
+  		       will enable the pull-down for the IO at the
+  		       corresponding offset.  For chips with fewer
+  		       than 16 IO pins, high-end bits are ignored.
+
 Example:
 
 	i2c_gpio_expander@20{
-- 
2.5.5

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