Subject: Re: PNP power management API for drivers
To: Jason Thorpe <firstname.lastname@example.org>
From: Jared D. McNeill <email@example.com>
Date: 10/16/2007 15:23:18
On Tue, 16 Oct 2007, Jason Thorpe wrote:
> ...and how does it power it on? On some devices (SoCs, especially), the
> power may be controlled by something completely unrelated to the device
> (within the scope of the device driver, at least).
> To power on a device, you need to make a request to the power domain that
> device resides in. In some cases, it might be PCI-style "go to D0". In some
> cases, it might be "call to board-specific ASIC that powers on 5 devices that
> are located in the same area of the board".
Gotcha. Thanks for clarifying.