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
WARNING: multiple messages have this Message-ID (diff)
From: Matthias Kaehlcke <mka-F7+t8E8rja9g9hUCZPvPmw@public.gmane.org>
To: Liam Girdwood <lgirdwood-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>,
Mark Brown <broonie-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org>,
Laxman Dewangan
<ldewangan-DDmLM1+adcrQT0dZR+AlfA@public.gmane.org>,
Rob Herring <robh+dt-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org>,
Mark Rutland <mark.rutland-5wv7dgnIgG8@public.gmane.org>
Cc: linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
devicetree-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
Douglas Anderson
<dianders-F7+t8E8rja9g9hUCZPvPmw@public.gmane.org>,
Brian Norris
<briannorris-F7+t8E8rja9g9hUCZPvPmw@public.gmane.org>,
Matthias Kaehlcke <mka-F7+t8E8rja9g9hUCZPvPmw@public.gmane.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-F7+t8E8rja9g9hUCZPvPmw@public.gmane.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
--
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next reply other threads:[~2017-05-01 18:37 UTC|newest]
Thread overview: 14+ 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 1/2] regulator: DT: Add properties for asymmetric settling times Matthias Kaehlcke
2017-05-01 18:37 ` [PATCH v2 2/2] regulator: Allow " Matthias Kaehlcke
2017-05-02 6:53 ` Laxman Dewangan
2017-05-02 6:53 ` Laxman Dewangan
2017-05-14 10:16 ` Mark Brown
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
2017-05-02 6:51 ` Laxman Dewangan
2017-05-08 14:08 ` Rob Herring
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
2017-05-17 9:53 ` Mark Brown
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