From: Grant Likely <grant.likely@secretlab.ca>
To: Thierry Reding <thierry.reding@avionic-design.de>
Cc: Alex Courbot <acourbot@nvidia.com>,
Alexandre Courbot <gnurou@gmail.com>,
"linux-fbdev@vger.kernel.org" <linux-fbdev@vger.kernel.org>,
Stephen Warren <swarren@nvidia.com>,
Arnd Bergmann <arnd@arndb.de>,
"linux-pm@vger.kernel.org" <linux-pm@vger.kernel.org>,
"devicetree-discuss@lists.ozlabs.org"
<devicetree-discuss@lists.ozlabs.org>,
Mark Brown <broonie@opensource.wolfsonmicro.com>,
Mark Zhang <markz@nvidia.com>,
Rob Herring <rob.herring@calxeda.com>,
"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
Anton Vorontsov <cbouatmailru@gmail.com>,
"linux-tegra@vger.kernel.org" <linux-tegra@vger.kernel.org>,
David Woodhouse <dwmw2@infradead.org>,
"linux-arm-kernel@lists.infradead.org"
<linux-arm-kernel@lists.infradead.org>
Subject: Re: [PATCHv9 1/3] Runtime Interpreted Power Sequences
Date: Mon, 26 Nov 2012 15:34:53 +0000 [thread overview]
Message-ID: <20121126153453.2AA023E1AAA@localhost> (raw)
In-Reply-To: <20121122214021.GA14771@avionic-0098.adnet.avionic-design.de>
On Thu, 22 Nov 2012 22:40:21 +0100, Thierry Reding <thierry.reding@avionic-design.de> wrote:
> On Thu, Nov 22, 2012 at 01:39:41PM +0000, Grant Likely wrote:
> [...]
> > I do think that each sequence should be contained within a single
> > property, but I'm open to other suggestions.
>
> IIRC a very early prototype did implement something like that. However
> because of the resource issues this had to be string based, so that the
> sequences looked somewhat like (Alex, correct me if I'm wrong):
>
> power-on = <"REGULATOR", "power", 1, "GPIO", "enable", 1>;
>
> Instead we could possibly have something like:
>
> power-on = <0 ® 1,
> 1 &gpio 42 0 1>;
Yes, that would work, although I still think it would be a good idea to
split the used resources off into the gpios/pwms/regs/etc properties.
> Where the first cell in each entry defines the type (0 = regulator, 1 =
> GPIO) and the rest would be a regular OF specifier for the given type of
> resource along with some defined parameter such as enable/disable,
> voltage, delay in ms, ... I don't know if that sounds any better. It
> looks sort of cryptic but it is more "in the spirit of" DT, right Grant?
It is still kind of a ham-handed approach, but it does fit better with
existing conventions than the hierarchy of nodes does.
g.
next prev parent reply other threads:[~2012-11-26 16:42 UTC|newest]
Thread overview: 43+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-11-17 10:55 [PATCHv9 0/3] Runtime Interpreted Power Sequences Alexandre Courbot
2012-11-17 10:55 ` [PATCHv9 1/3] " Alexandre Courbot
2012-11-17 11:38 ` Anton Vorontsov
2012-11-19 2:29 ` Alex Courbot
2012-11-19 2:32 ` Anton Vorontsov
2012-11-20 14:48 ` Tomi Valkeinen
2012-11-21 1:56 ` Alex Courbot
2012-11-21 8:13 ` Tomi Valkeinen
2012-11-21 8:32 ` Alex Courbot
2012-11-21 8:48 ` Tomi Valkeinen
2012-11-21 10:00 ` Alex Courbot
2012-11-22 13:01 ` Grant Likely
2012-11-20 21:54 ` Grant Likely
2012-11-21 1:31 ` Mark Brown
2012-11-21 16:44 ` Grant Likely
2012-11-22 8:57 ` Linus Walleij
2012-11-22 9:55 ` Alexandre Courbot
2012-11-23 1:44 ` Mark Brown
2012-11-21 4:23 ` Alex Courbot
2012-11-21 11:06 ` Tomi Valkeinen
2012-11-21 11:40 ` Thierry Reding
2012-11-21 12:04 ` Tomi Valkeinen
2012-11-21 13:00 ` Thierry Reding
2012-11-21 13:32 ` Tomi Valkeinen
2012-11-21 15:02 ` Alexandre Courbot
2012-11-21 15:12 ` Thierry Reding
2012-11-22 2:01 ` Alexandre Courbot
2012-11-22 2:06 ` Mark Brown
2012-11-22 3:09 ` Alexandre Courbot
2012-11-22 13:39 ` Grant Likely
2012-11-27 15:19 ` Laurent Pinchart
2012-11-27 15:08 ` Laurent Pinchart
2012-11-27 15:19 ` Tomi Valkeinen
2012-11-27 15:37 ` Laurent Pinchart
2012-11-27 16:46 ` Mark Brown
2012-11-27 14:47 ` Laurent Pinchart
2012-11-22 13:39 ` Grant Likely
2012-11-22 21:40 ` Thierry Reding
2012-11-26 11:49 ` Alex Courbot
2012-11-26 15:34 ` Grant Likely [this message]
2012-11-17 10:55 ` [PATCHv9 2/3] pwm_backlight: use power sequences Alexandre Courbot
2012-11-17 10:55 ` [PATCHv9 3/3] Take maintainership of " Alexandre Courbot
2012-11-20 21:58 ` [PATCHv9 0/3] Runtime Interpreted Power Sequences Grant Likely
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