netdev - Re: smsc911x suspend/resume

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Message-ID: <OFB9598254.A94CFB16-ON802576C5.004BB8B6-802576C7.00655296@smsc.com>
Date:	Thu, 11 Feb 2010 18:26:32 +0000
From:	Steve.Glendinning@...c.com
To:	Daniel Mack <daniel@...aq.de>
Cc:	LAKML <linux-arm-kernel@...ts.infradead.org>,
	linux-arm-kernel-bounces@...ts.infradead.org,
	Mike Rapoport <mike@...pulab.co.il>, netdev@...r.kernel.org,
	Ian.Saturley@...c.com
Subject: Re: smsc911x suspend/resume

> Hmm, be careful about switching off power supplies that aren't supposed
> to be switched off while others are still powered. You can easily
> destroy hardware with that. Depending on how things are wired up
> internally, voltages can leak from one unit block to the other. Maybe
> Steve can can give a statement from official SMSC source about whether
> it is safe to switch off VDD33A in this case.

I've checked with the chip architects, no power planes should be 
externally
switched off in any suspend mode.

Steve
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