From: Mark Brown <broonie@kernel.org>
To: Matthias Kaehlcke <mka@chromium.org>
Cc: lgirdwood@gmail.com, Douglas Anderson <dianders@chromium.org>,
briannorris@chromium.org, javier@dowhile0.org,
robh+dt@kernel.org, mark.rutland@arm.com,
linux-kernel@vger.kernel.org, devicetree@vger.kernel.org
Subject: Re: [PATCH v4 3/4] regulator: Add support for a fixed delay after voltage increases
Date: Mon, 12 Sep 2016 19:36:24 +0100 [thread overview]
Message-ID: <20160912183624.GG27946@sirena.org.uk> (raw)
In-Reply-To: <20160906190504.GA79728@google.com>
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On Tue, Sep 06, 2016 at 12:05:04PM -0700, Matthias Kaehlcke wrote:
> the stabilisation time. This change introduces the device tree property
> "regulator-settle-time-up-us" which allows to specify a fixed delay
> We don't add an option of a fixed delay on the way down for now because
> the way down is probably modelled best with a ramp rate, not a fixed
> delay.
Are you sure? It seems more likely to be highly load dependent if
there's an appreciable variation. That could be a ramp rate if you've
got a very predictable load and a simple regulator but it seems like
the system is less likely to care if we collapsed down in that case.
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next prev parent reply other threads:[~2016-09-12 18:36 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-09-06 19:05 Matthias Kaehlcke
2016-09-12 18:36 ` Mark Brown [this message]
2016-09-15 12:51 ` Doug Anderson
2016-09-16 12:28 ` Rob Herring
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