[RFC PATCH 4/6] USB: ehci-omap: Suspend the controller during bus suspend

Felipe Balbi balbi at ti.com
Wed Jul 3 08:57:19 EDT 2013


On Tue, Jul 02, 2013 at 01:17:58PM -0400, Alan Stern wrote:
> A PCI-based EHCI controller has two power sources: the core well (which
> is turned off during suspend) and the auxiliary well (which remains
> powered).  That's how remote wakeup works; it uses the auxiliary well.

This, kinda, matches what OMAP tries to do with pad wakeup. Just that
pad wakeup sits outside of the device itself. Perhaps we could look into
how PCI handles the aux well and take some inspiration from there.

Any pointers under drivers/pci/ would be great :-)

-------------- next part --------------
A non-text attachment was scrubbed...
Name: signature.asc
Type: application/pgp-signature
Size: 836 bytes
Desc: Digital signature
URL: <http://lists.infradead.org/pipermail/linux-arm-kernel/attachments/20130703/3c404967/attachment.sig>

More information about the linux-arm-kernel mailing list