[PATCH] regulator: Document new regulator-max-step-microvolt property

[Dmitry Osipenko]

Certain hardware may require supply voltage to be changed in steps. Define
new property that allow to describe such hardware.

Signed-off-by: Dmitry Osipenko <digetx@xxxxxxxxx>
Reviewed-by: Rob Herring <robh@xxxxxxxxxx>
Signed-off-by: Mark Brown <broonie@xxxxxxxxxx>
---
 Documentation/devicetree/bindings/regulator/regulator.txt | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/Documentation/devicetree/bindings/regulator/regulator.txt b/Documentation/devicetree/bindings/regulator/regulator.txt
index 9b525b657fca..0c3a243c95df 100644
--- a/Documentation/devicetree/bindings/regulator/regulator.txt
+++ b/Documentation/devicetree/bindings/regulator/regulator.txt
@@ -79,6 +79,8 @@ Optional properties:
 - regulator-coupled-max-spread: Array of maximum spread between voltages of
   coupled regulators in microvolts, each value in the array relates to the
   corresponding couple specified by the regulator-coupled-with property.
+- regulator-max-step-microvolt: Maximum difference between current and target
+  voltages that can be changed safely in a single step.
 
 Deprecated properties:
 - regulator-compatible: If a regulator chip contains multiple
-- 
2.19.0.rc2