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Subject[PATCH v2] dt-bindings: regulator: Change regulator-coupled-max-spread property
Redefine binding for regulator-coupled-max-spread property in a way that
max-spread values are defined per regulator couple instead of defining
single max-spread for the whole group of coupled regulators.

With that change the following regulators coupling configuration will be

regA: regulatorA {
regulator-coupled-with = <&regB &regC>;
regulator-coupled-max-spread = <100000 300000>;

regB: regulatorB {
regulator-coupled-with = <&regA &regC>;
regulator-coupled-max-spread = <100000 200000>;

regC: regulatorC {
regulator-coupled-with = <&regA &regB>;
regulator-coupled-max-spread = <300000 200000>;

Note that the regulator-coupled-max-spread property does not have any
users yet, hence it's okay to change the binding.

Signed-off-by: Dmitry Osipenko <>

v2: Added note to the commit description, saying that the property doesn't
have users yet. That was requested by Rob Herring in the review comment
to v1.

Documentation/devicetree/bindings/regulator/regulator.txt | 5 +++--
1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/Documentation/devicetree/bindings/regulator/regulator.txt b/Documentation/devicetree/bindings/regulator/regulator.txt
index a7cd36877bfe..9b525b657fca 100644
--- a/Documentation/devicetree/bindings/regulator/regulator.txt
+++ b/Documentation/devicetree/bindings/regulator/regulator.txt
@@ -76,8 +76,9 @@ Optional properties:
- regulator-coupled-with: Regulators with which the regulator
is coupled. The linkage is 2-way - all coupled regulators should be linked
with each other. A regulator should not be coupled with its supplier.
-- regulator-coupled-max-spread: Max spread between voltages of coupled regulators
- in microvolts.
+- 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.

Deprecated properties:
- regulator-compatible: If a regulator chip contains multiple
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