From: Mark Brown <broonie@kernel.org>
To: Stephen Boyd <stephen.boyd@linaro.org>
Cc: Georgi Djakov <georgi.djakov@linaro.org>,
linux-kernel@vger.kernel.org, linux-arm-msm@vger.kernel.org
Subject: Re: [PATCH] regulator: Support ramp-up delay for drivers with get_voltage()
Date: Wed, 30 Mar 2016 13:39:46 -0700 [thread overview]
Message-ID: <20160330203946.GT2350@sirena.org.uk> (raw)
In-Reply-To: <20160330193426.5881.34139@sboyd-linaro>
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On Wed, Mar 30, 2016 at 12:34:26PM -0700, Stephen Boyd wrote:
> Ok. Just curious, why is there a 'selector' argument to the
> set_voltage() op then? The qcom spmi driver is using that to allow the
> list operation to return the voltage that was actually set. Is that a
> 'selector' interface? We could just as easily have read the hardware to
> figure out the voltage, but I think we implement the list op to avoid
> reading hardware when we know what selector has been chosen during
> voltage changes.
Historical reasons - this predates having the split selector and map
operations.
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prev parent reply other threads:[~2016-03-30 20:39 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-03-30 14:23 Georgi Djakov
2016-03-30 17:36 ` Mark Brown
2016-03-30 18:17 ` Stephen Boyd
2016-03-30 18:32 ` Mark Brown
[not found] ` <20160330193426.5881.34139@sboyd-linaro>
2016-03-30 20:39 ` Mark Brown [this message]
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