Signed-off-by: Andrey Smirnov <andrew.smir...@gmail.com>
---
 Documentation/devicetree/bindings/gpio/gpio-sx150x.txt | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/Documentation/devicetree/bindings/gpio/gpio-sx150x.txt 
b/Documentation/devicetree/bindings/gpio/gpio-sx150x.txt
index 4b7c48a..e96b554 100644
--- a/Documentation/devicetree/bindings/gpio/gpio-sx150x.txt
+++ b/Documentation/devicetree/bindings/gpio/gpio-sx150x.txt
@@ -48,6 +48,13 @@ Optional properties:
                              beginning of the probe in order to place
                              it in a known state.
 
+- semtech,oscio-is-gpo: Boolean, if set to true, the driver will
+                       configure OSCIO as a GPO instead of as an
+                       oscillator, increasing the size of the GP(I)O
+                       pool created by this expander by one.  The
+                       output-only GPO pin will be added at the end
+                       of the block.
+
 Example:
 
        i2c_gpio_expander@20{
-- 
2.5.5

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