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From: Matthias Kaehlcke <mka@chromium.org>
To: Liam Girdwood <lgirdwood@gmail.com>,
	Mark Brown <broonie@kernel.org>,
	Laxman Dewangan <ldewangan@nvidia.com>,
	Rob Herring <robh+dt@kernel.org>,
	Mark Rutland <mark.rutland@arm.com>
Cc: linux-kernel@vger.kernel.org, devicetree@vger.kernel.org,
	Douglas Anderson <dianders@chromium.org>,
	Brian Norris <briannorris@chromium.org>,
	Matthias Kaehlcke <mka@chromium.org>
Subject: [PATCH v2 1/2] regulator: DT: Add properties for asymmetric settling times
Date: Mon,  1 May 2017 11:37:14 -0700	[thread overview]
Message-ID: <20170501183715.35375-1-mka@chromium.org> (raw)

Some regulators have different settling times for voltage increases and
decreases. Add DT properties to define separate settling times for up-
and downward voltage changes.

Signed-off-by: Matthias Kaehlcke <mka@chromium.org>
---
Changes in v2:
- Moved DT binding doc to separate patch
- Don't remove settling_time property

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

diff --git a/Documentation/devicetree/bindings/regulator/regulator.txt b/Documentation/devicetree/bindings/regulator/regulator.txt
index d18edb075e1c..378f6dc8b8bd 100644
--- a/Documentation/devicetree/bindings/regulator/regulator.txt
+++ b/Documentation/devicetree/bindings/regulator/regulator.txt
@@ -24,6 +24,14 @@ Optional properties:
 - 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-settling-time-up-us: Settling time, in microseconds, for voltage
+  increase if the regulator needs a constant time to settle after voltage
+  increases of any level. This is useful for regulators with exponential
+  voltage changes.
+- regulator-settling-time-down-us: Settling time, in microseconds, for voltage
+  decrease if the regulator needs a constant time to settle after voltage
+  decreases of any level. This is useful for regulators with exponential
+  voltage changes.
 - 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,
-- 
2.13.0.rc0.306.g87b477812d-goog

             reply	other threads:[~2017-05-01 18:37 UTC|newest]

Thread overview: 8+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2017-05-01 18:37 Matthias Kaehlcke [this message]
2017-05-01 18:37 ` [PATCH v2 2/2] regulator: Allow " Matthias Kaehlcke
2017-05-02  6:53   ` Laxman Dewangan
2017-05-14 10:16   ` Mark Brown
2017-05-15 22:55     ` Matthias Kaehlcke
2017-05-02  6:51 ` [PATCH v2 1/2] regulator: DT: Add properties " Laxman Dewangan
2017-05-08 14:08 ` Rob Herring
2017-05-17  9:53 ` Applied "regulator: DT: Add properties for asymmetric settling times" to the regulator tree Mark Brown

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