From: Mark Brown <broonie@opensource.wolfsonmicro.com>
To: Linus Walleij <linus.walleij@linaro.org>
Cc: Barry Song <21cnbao@gmail.com>,
Shawn Guo <shawn.guo@freescale.com>,
Linus Walleij <linus.walleij@stericsson.com>,
linux-kernel@vger.kernel.org, Stephen Warren <swarren@nvidia.com>,
Linaro Dev <linaro-dev@lists.linaro.org>,
Sascha Hauer <s.hauer@pengutronix.de>,
David Brown <davidb@codeaurora.org>,
Grant Likely <grant.likely@secretlab.ca>
Subject: Re: [PATCH 2/2] pinctrl: add a generic control interface
Date: Fri, 21 Oct 2011 13:30:41 +0100 [thread overview]
Message-ID: <20111021123041.GE4080@opensource.wolfsonmicro.com> (raw)
In-Reply-To: <CACRpkdbJbUefH+Q0GMp+_4FhV5RqQ+KHrGnJLR6jZSNR16NbSw@mail.gmail.com>
On Fri, Oct 21, 2011 at 02:28:25PM +0200, Linus Walleij wrote:
> On Thu, Oct 20, 2011 at 5:42 PM, Mark Brown
> > On Thu, Oct 20, 2011 at 04:43:30PM +0200, Linus Walleij wrote:
> >> In Ux500 we model our power domain switches as regulators,
> >> does such a property even belong in pin control? Is there
> >> one power domain switch per pin you mean, or a power switch
> >> for a whole group of pins?
> > This isn't an on/off control and in this cae it's per pin.
> If this is a binary output pin, I suspect that
> I suspect that what you call "off" is actually implemeted as
> in this figure:
To repeat once more: this is *not* an on/off control, this is a control
selecting the voltage domain a pin is referenced to.
> http://upload.wikimedia.org/wikipedia/commons/c/c0/Tristate_buffer.svg
No, this is completely orthogonal to voltage domain selection.
next prev parent reply other threads:[~2011-10-21 12:30 UTC|newest]
Thread overview: 27+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-10-19 16:21 [PATCH 2/2] pinctrl: add a generic control interface Linus Walleij
2011-10-19 23:04 ` Stephen Warren
2011-10-20 2:45 ` Shawn Guo
2011-10-20 13:44 ` Linus Walleij
2011-10-20 18:41 ` Stephen Warren
2011-10-20 13:46 ` Linus Walleij
2011-10-20 10:24 ` Linus Walleij
2011-10-20 18:46 ` Stephen Warren
2011-10-20 2:31 ` Shawn Guo
2011-10-20 9:17 ` Barry Song
2011-10-20 13:10 ` Shawn Guo
2011-10-20 14:18 ` Linus Walleij
2011-10-23 8:51 ` Shawn Guo
2011-10-25 4:49 ` Stephen Warren
2011-10-20 14:04 ` Linus Walleij
2011-10-20 14:18 ` Mark Brown
2011-10-20 14:43 ` Linus Walleij
2011-10-20 15:42 ` Mark Brown
2011-10-21 12:28 ` Linus Walleij
2011-10-21 12:30 ` Mark Brown [this message]
2011-10-21 12:51 ` Linus Walleij
2011-10-21 12:55 ` Mark Brown
2011-10-21 12:57 ` Linus Walleij
2011-10-21 15:24 ` Mark Brown
2011-10-20 17:26 ` Stephen Warren
2011-10-23 8:25 ` Shawn Guo
2011-10-25 4:43 ` Stephen Warren
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