linux-kernel - Re: [PATCH] b44: power down PHY when interface down

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Message-ID: <20070630152507.GB2553@xi.wantstofly.org>
Date:	Sat, 30 Jun 2007 17:25:07 +0200
From:	Lennert Buytenhek <buytenh@...tstofly.org>
To:	Matthew Garrett <mjg59@...f.ucam.org>
Cc:	Arjan van de Ven <arjan@...ux.intel.com>,
	Török Edvin <edwintorok@...il.com>,
	netdev@...r.kernel.org, power@...host.org, zambrano@...adcom.com,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH] b44: power down PHY when interface down

On Sat, Jun 30, 2007 at 04:19:23PM +0100, Matthew Garrett wrote:

> I'd agree that there's a need for a state where we power down as much as 
> possible (even at the cost of functionality), but where possible it 
> would also be nice to offer a state where the mac is powered down and 
> the phy left up.

There are PHYs which can detect that someone's on the other end even
when powered down..
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