[PATCH v3 3/6] dt-bindings: mfd: da9062: add regulator voltage selection documentation

[Marco Felsch <m.felsch@xxxxxxxxxxxxxx>]

Add the documentation which describe the voltage selection gpio support.
This property can be applied to each subnode within the 'regulators'
node so each regulator can be configured differently.

Signed-off-by: Marco Felsch <m.felsch@xxxxxxxxxxxxxx>
---
Changelog:
v3:
- adapt binding description

 Documentation/devicetree/bindings/mfd/da9062.txt | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/Documentation/devicetree/bindings/mfd/da9062.txt b/Documentation/devicetree/bindings/mfd/da9062.txt
index edca653a5777..b9cccd4c3f76 100644
--- a/Documentation/devicetree/bindings/mfd/da9062.txt
+++ b/Documentation/devicetree/bindings/mfd/da9062.txt
@@ -66,6 +66,14 @@ Sub-nodes:
   details of individual regulator device can be found in:
   Documentation/devicetree/bindings/regulator/regulator.txt
 
+  Optional regulator device-specific properties:
+  - dlg,vsel-sense-gpios : A GPIO reference to a local general purpose input,
+    the datasheet calls it GPI. The regulator sense the input signal and select
+    the active or suspend voltage settings. If the signal is active the
+    active-settings are applied else the suspend-settings are applied.
+    Attention: Sharing the same GPI for other purposes or across multiple
+    regulators is possible but the polarity setting must equal.
+
 - rtc : This node defines settings required for the Real-Time Clock associated
   with the DA9062. There are currently no entries in this binding, however
   compatible = "dlg,da9062-rtc" should be added if a node is created.
-- 
2.20.1