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authorLaxman Dewangan <ldewangan@nvidia.com>2013-09-18 12:48:02 (GMT)
committerMark Brown <broonie@linaro.org>2013-09-18 16:13:02 (GMT)
commit00c877c69ba315d6c565a4df51c71b11e82cdeb8 (patch)
tree8b5dcf0d475476da3ee8c2cb310e9bce34e6d30a /Documentation/devicetree/bindings/regulator
parent272b98c6455f00884f0350f775c5342358ebb73f (diff)
regulator: core: add support for configuring turn-on time through constraints
The turn-on time of the regulator depends on the regulator device's electrical characteristics. Sometimes regulator turn-on time also depends on the capacitive load on the given platform and it can be more than the datasheet value. The driver provides the enable-time as per datasheet. Add support for configure the enable ramp time through regulator constraints so that regulator core can take this value for enable time for that regulator. Signed-off-by: Laxman Dewangan <ldewangan@nvidia.com> Acked-by: Stephen Warren <swarren@nvidia.com> Signed-off-by: Mark Brown <broonie@linaro.org>
Diffstat (limited to 'Documentation/devicetree/bindings/regulator')
-rw-r--r--Documentation/devicetree/bindings/regulator/regulator.txt5
1 files changed, 5 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/regulator/regulator.txt b/Documentation/devicetree/bindings/regulator/regulator.txt
index 2bd8f09..e2c7f1e 100644
--- a/Documentation/devicetree/bindings/regulator/regulator.txt
+++ b/Documentation/devicetree/bindings/regulator/regulator.txt
@@ -14,6 +14,11 @@ Optional properties:
- regulator-ramp-delay: ramp delay for regulator(in uV/uS)
For hardwares which support disabling ramp rate, it should be explicitly
intialised to zero (regulator-ramp-delay = <0>) for disabling ramp delay.
+- regulator-enable-ramp-delay: The time taken, in microseconds, for the supply
+ rail to reach the target voltage, plus/minus whatever tolerance the board
+ 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.
Deprecated properties:
- regulator-compatible: If a regulator chip contains multiple

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