From: broonie@opensource.wolfsonmicro.com (Mark Brown)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH] regulator: anatop: improve precision of delay time
Date: Fri, 8 Feb 2013 11:15:25 +0000 [thread overview]
Message-ID: <20130208111525.GH8879@opensource.wolfsonmicro.com> (raw)
In-Reply-To: <1359944492-23130-1-git-send-email-shawn.guo@linaro.org>
On Mon, Feb 04, 2013 at 10:21:32AM +0800, Shawn Guo wrote:
> For cpufreq example, it takes 13 steps (25 mV for one step) to increase
> vddcore from 0.95 V to 1.275 V, and the time of 64 clock cycles at
> 24 MHz for one step is ~2.67 uS, so the total delay time would be
> ~34.71 uS. But the current calculation in the driver gives 39 uS.
> Change the formula to have the addition of 1 be the last step, so that
> we can get a more precise delay time. For example above, the new
> formula will give 35 uS.
Applied, thanks.
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prev parent reply other threads:[~2013-02-08 11:15 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-02-04 2:21 [PATCH] regulator: anatop: improve precision of delay time Shawn Guo
2013-02-04 15:52 ` Anson Huang
2013-02-08 11:15 ` Mark Brown [this message]
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