From: Mark Brown <broonie@kernel.org>
To: Vladimir Zapolskiy <vladimir_zapolskiy@mentor.com>
Cc: Liam Girdwood <lgirdwood@gmail.com>,
"devicetree@vger.kernel.org" <devicetree@vger.kernel.org>,
linux-kernel@vger.kernel.org
Subject: Re: Question about fixed regulator DT properties
Date: Tue, 25 Nov 2014 12:17:49 +0000 [thread overview]
Message-ID: <20141125121749.GV7712@sirena.org.uk> (raw)
In-Reply-To: <546CAB49.8030103@mentor.com>
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On Wed, Nov 19, 2014 at 04:38:01PM +0200, Vladimir Zapolskiy wrote:
> Hello Mark,
>
> On 18.11.2014 17:00, Vladimir Zapolskiy wrote:
Your mail is really quite long and all in quotes which makes it hard to
follow, brevity is really helpful to readers.
> > | regulator-boot-on | enable-active-high | GPIO polarity | GPIO output |
> > +-------------------+--------------------+---------------+-------------+
> > | no | yes | active high | low |
> > | no | no | active low | high |
> > I'd rather think that both resulting GPIO outputs are incorrect or
> > better to say do not correspond to my perception of "regulator-boot-on"
> > and "enable-active-high" DTS properties described in the documentation,
> > however above "enable-active-high" and actual GPIO polarity are the same
> > (when they are not, it is another open topic for discussion).
What you're saying seems sensible.
> > Should documentation be updated to reflect "regulator-boot-on" role that
> > a regulator is re-enabled by the kernel?
I'm confused about this. That's the sole purpose of the flag and as far
as I can tell it's what the documentation says.
> > Should "enable-active-high" be replaced by getting GPIO flags directly?
Probably makes sense, it predates those flags by quite some time.
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next prev parent reply other threads:[~2014-11-25 12:20 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-11-18 15:00 Question about Vladimir Zapolskiy
2014-11-19 14:38 ` Question about fixed regulator DT properties Vladimir Zapolskiy
2014-11-25 12:17 ` Mark Brown [this message]
2014-11-26 17:27 ` Vladimir Zapolskiy
2014-11-26 17:53 ` Mark Brown
2014-11-26 19:13 ` Vladimir Zapolskiy
2014-11-26 19:20 ` Mark Brown
2014-11-26 19:57 ` Vladimir Zapolskiy
2014-11-26 20:36 ` Mark Brown
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