regulator: gpio: Document regulator-type property

Reported-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Mark Brown <broonie@linaro.org>

diff --git a/Documentation/devicetree/bindings/regulator/gpio-regulator.txt b/Documentation/devicetree/bindings/regulator/gpio-regulator.txt
index 63c659800c0320a9b08a8878fcb3ab327f270d9f..1229541f48a230276888f2dac2f6be28a751d7fc 100644 (file)
--- a/Documentation/devicetree/bindings/regulator/gpio-regulator.txt
+++ b/Documentation/devicetree/bindings/regulator/gpio-regulator.txt
@@ -10,6 +10,8 @@ Optional properties:
 - gpios                        : GPIO group used to control voltage.
 - startup-delay-us     : Startup time in microseconds.
 - enable-active-high   : Polarity of GPIO is active high (default is low).
+- regulator-type       : Specifies what is being regulated, must be either
+                         "voltage" or "current", defaults to current.
 
 Any property defined as part of the core regulator binding defined in
 regulator.txt can also be used.