linux-kernel - Re: [PATCH 01/13] clk: tegra: Add binding for the Tegra124 DFLL clocksource

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Message-ID: <20140714091233.GC6800@sirena.org.uk>
Date:	Mon, 14 Jul 2014 10:12:33 +0100
From:	Mark Brown <broonie@...nel.org>
To:	Thierry Reding <thierry.reding@...il.com>
Cc:	Tuomas Tynkkynen <ttynkkynen@...dia.com>,
	Andrew Bresticker <abrestic@...omium.org>,
	"linux-tegra@...r.kernel.org" <linux-tegra@...r.kernel.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"linux-arm-kernel@...ts.infradead.org" 
	<linux-arm-kernel@...ts.infradead.org>,
	"linux-pm@...r.kernel.org" <linux-pm@...r.kernel.org>,
	"devicetree@...r.kernel.org" <devicetree@...r.kernel.org>,
	Prashant Gaikwad <pgaikwad@...dia.com>,
	Mike Turquette <mturquette@...aro.org>,
	Stephen Warren <swarren@...dotorg.org>,
	Viresh Kumar <viresh.kumar@...aro.org>,
	Peter De Schrijver <pdeschrijver@...dia.com>,
	"Rafael J. Wysocki" <rjw@...ysocki.net>
Subject: Re: [PATCH 01/13] clk: tegra: Add binding for the Tegra124 DFLL
 clocksource

On Mon, Jul 14, 2014 at 10:38:56AM +0200, Thierry Reding wrote:
> On Fri, Jul 11, 2014 at 08:21:27PM +0300, Tuomas Tynkkynen wrote:

> > I don't think we can assume that each selector maps to a concrete register
> > value, though I'm not sure. include/linux/regulator/driver.h documents for
> > @list_voltage "Selectors range from zero to one less
> > regulator_desc.n_voltages." but maybe the consumer API could take different
> > values.

> I don't think the regulator API makes any guarantees that the selector
> corresponds to a register value. Adding Mark Brown, maybe he can help
> figure out the best way to do this.

The selector value is opaque, it's entirely up to the driver to define
it.  If you could tell me what "this" is I might be able to advise on
how to do it.

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