From: linux@arm.linux.org.uk (Russell King - ARM Linux)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH] pl011: added clock management feature
Date: Wed, 10 Nov 2010 00:01:52 +0000 [thread overview]
Message-ID: <20101110000152.GA8993@n2100.arm.linux.org.uk> (raw)
In-Reply-To: <20101109224012.GA21992@kroah.com>
On Tue, Nov 09, 2010 at 02:40:12PM -0800, Greg KH wrote:
> On Tue, Nov 09, 2010 at 04:30:37PM +0100, Linus Walleij wrote:
> > From: Grzegorz Sygieda <grzegorz.sygieda@tieto.com>
> >
> > This patch allows to control the pl011 clock using set_termios
> > callback. Any positive baudrate passed enables clock, otherwise
> > disables. This saves a lot of power on submicron designs since
> > we can clock off and disable unused UARTs.
>
> That's nice, but it seems like an overload of what people traditionally
> think of when it comes to baud rates. Why not just power down ports
> that are not open instead?
We already do. My question to Linus (in a previous message) is why this
isn't sufficient.
next prev parent reply other threads:[~2010-11-10 0:01 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-11-09 15:30 [PATCH] pl011: added clock management feature Linus Walleij
2010-11-09 15:44 ` Russell King - ARM Linux
2010-11-09 22:40 ` Greg KH
2010-11-10 0:01 ` Russell King - ARM Linux [this message]
2010-11-10 7:54 ` Grzegorz.Sygieda at tieto.com
2010-11-10 8:15 ` Grzegorz.Sygieda at tieto.com
2010-11-10 17:00 ` Greg KH
2010-11-10 17:11 ` Russell King - ARM Linux
2010-11-17 8:24 ` Grzegorz.Sygieda at tieto.com
2010-12-03 11:47 ` Vitaly Wool
2010-12-03 15:15 ` Russell King - ARM Linux
2010-12-06 9:53 ` Vitaly Wool
2010-12-06 10:14 ` Russell King - ARM Linux
2010-12-06 12:23 ` Par-Gunnar HJALMDAHL
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