regulator: gpio-regulator: Catch 'no states property' misuse

A selection of voltage or current values (AKA states) should always
be specified when using a GPIO regulator. If there are no switchable
states then the fixed regulators should be used instead.

Signed-off-by: Lee Jones <lee.jones@linaro.org>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>

1 files changed, 2 insertions, 1 deletions

diff --git a/Documentation/devicetree/bindings/regulator/gpio-regulator.txt b/Documentation/devicetree/bindings/regulator/gpio-regulator.txt
index f71f8083c2ae..63c659800c03 100644
--- a/Documentation/devicetree/bindings/regulator/gpio-regulator.txt
+++ b/Documentation/devicetree/bindings/regulator/gpio-regulator.txt
@@ -2,11 +2,12 @@ GPIO controlled regulators
 
 Required properties:
 - compatible            : Must be "regulator-gpio".
+- states                : Selection of available voltages and GPIO configs.
+                          if there are no states, then use a fixed regulator
 
 Optional properties:
 - enable-gpio           : GPIO to use to enable/disable the regulator.
 - gpios                 : GPIO group used to control voltage.
-- states                : Selection of available voltages and GPIO configs.
 - startup-delay-us      : Startup time in microseconds.
 - enable-active-high    : Polarity of GPIO is active high (default is low).