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Date: Fri, 18 Feb 2011 22:16:06 +0000
From: Mark Brown <broonie@opensource.wolfsonmicro.com>
To: Russell King - ARM Linux <linux@arm.linux.org.uk>
Cc: "Rafael J. Wysocki" <rjw@sisk.pl>, khilman@ti.com, magnus.damm@gmail.com,
        LKML <linux-kernel@vger.kernel.org>, Rabin Vincent <rabin@rab.in>,
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        linux-pm@lists.linux-foundation.org,
        linux-arm-kernel <linux-arm-kernel@lists.infradead.org>
Subject: Re: platform/i2c busses: pm runtime and system sleep
Message-ID: <20110218221606.GB25168@sirena.org.uk>
References: <AANLkTinyDE3OxKup_aqsN8HJH_r5LcwkP17OtuMRpACx@mail.gmail.com> <201102181928.05911.rjw@sisk.pl> <AANLkTi=j9KeX2TSzMaKMWR6GpXjFcsjp0z8Rt+ArLXiV@mail.gmail.com> <201102182120.29977.rjw@sisk.pl> <20110218202744.GA19427@n2100.arm.linux.org.uk>
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On Fri, Feb 18, 2011 at 08:27:44PM +0000, Russell King - ARM Linux wrote:

> Do we have any pressing need to convert AMBA stuff?  I haven't heard any
> reason yet to convert them to runtime PM - they don't even make any
> runtime PM calls.

There's a bit of a chicken and egg problem in that it's not possible for
devices to make use of runtime PM unless the bus has runtime PM support
implemented - the bus implementation is mandatory, there's no default.
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