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Re: Power Management Framework architectural design
On Apr 15, 2008, at 7:37 AM, Martin Husemann wrote:
But if the domain decides to power down, the device still needs to
power down it's children first (no matter in what domains those
are). This is not directly an issue in the case at hand due to the
flat device tree.
This may not always be a good assumption. I'm not sure yet how it's
actually done in the OLPC, but there's a device in the OLPC that stays
on even when the CPU is off - the wireless device. It remains on and
running at very low power in order to maintain the mesh network. So
it would be wrong to power it off when powering off whatever bus it's
on. I mention this only to point out that the mechanism you're
proposing will probably at least need to have exceptions.
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