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authorLaxman Dewangan <ldewangan@nvidia.com>2017-04-04 18:59:49 +0530
committerMark Brown <broonie@kernel.org>2017-04-05 18:25:10 +0100
commitcfd2cedb482ae29ce13a3db46cc24f0c082ca9cf (patch)
treece9c3923b7d987fe3226a49d10b0a8bdae4dcbb8
parentd00b74613fb18dfd0a5aa99270ee2e72d5c808d7 (diff)
regulator: DT: Add settling time property for non-linear voltage change
Some regulators (some PWM regulators) have the voltage transition exponentially. On such cases, the settling time for voltage change is treated as constant time. Add DT property for providing the settling time for any level of voltage change for non-linear voltage change. signed-off-by: Laxman Dewangan <ldewangan@nvidia.com> Acked-by: Rob Herring <robh@kernel.org> Signed-off-by: Mark Brown <broonie@kernel.org>
-rw-r--r--Documentation/devicetree/bindings/regulator/regulator.txt3
1 files changed, 3 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/regulator/regulator.txt b/Documentation/devicetree/bindings/regulator/regulator.txt
index 6ab5aef619d9..d18edb075e1c 100644
--- a/Documentation/devicetree/bindings/regulator/regulator.txt
+++ b/Documentation/devicetree/bindings/regulator/regulator.txt
@@ -21,6 +21,9 @@ Optional properties:
design requires. This property describes the total system ramp time
required due to the combination of internal ramping of the regulator itself,
and board design issues such as trace capacitance and load on the supply.
+- regulator-settling-time-us: Settling time, in microseconds, for voltage
+ change if regulator have the constant time for any level voltage change.
+ This is useful when regulator have exponential voltage change.
- regulator-soft-start: Enable soft start so that voltage ramps slowly
- regulator-state-mem sub-root node for Suspend-to-RAM mode
: suspend to memory, the device goes to sleep, but all data stored in memory,