Some regulators require keeping their voltage spread below defined
max_spread.

Add properties to provide information on regulators' coupling.

Signed-off-by: Maciej Purski <[email protected]>
---
 Documentation/devicetree/bindings/regulator/regulator.txt | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/Documentation/devicetree/bindings/regulator/regulator.txt 
b/Documentation/devicetree/bindings/regulator/regulator.txt
index 378f6dc..6769565 100644
--- a/Documentation/devicetree/bindings/regulator/regulator.txt
+++ b/Documentation/devicetree/bindings/regulator/regulator.txt
@@ -60,6 +60,10 @@ Optional properties:
        0: Disable active discharge.
        1: Enable active discharge.
        Absence of this property will leave configuration to default.
+- regulator-coupled-with: Phandle to regulators with which the regulator
+  should be coupled. Allow up to 9 phandles.
+- regulator-coupled-max-spread: Max spread between voltages of coupled 
regulators
+  in microvolts.
 
 Deprecated properties:
 - regulator-compatible: If a regulator chip contains multiple
-- 
2.7.4

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