* USB EHCI - Power Management - Query
@ 2009-04-29 11:02 Remith Ravi
2009-04-29 15:20 ` Greg KH
0 siblings, 1 reply; 2+ messages in thread
From: Remith Ravi @ 2009-04-29 11:02 UTC (permalink / raw)
To: linux-omap@vger.kernel.org, linux-usb
Hi,
I have a query on OMAP3530 USB EHCI Power Management.
USB EHCI port is not switching off the port during suspend activity
and it is drawing current from the system.
Is the power management tested for USB EHCI ?
In file "drivers/usb/host/ehci-omap.c", the function
ehci_hcd_omap_drv_suspend() and ehci_hcd_omap_drv_resume() is
commented out.
Did anybody tried power management on USB EHCI ?
Regards,
Remith
^ permalink raw reply [flat|nested] 2+ messages in thread
* Re: USB EHCI - Power Management - Query
2009-04-29 11:02 USB EHCI - Power Management - Query Remith Ravi
@ 2009-04-29 15:20 ` Greg KH
0 siblings, 0 replies; 2+ messages in thread
From: Greg KH @ 2009-04-29 15:20 UTC (permalink / raw)
To: Remith Ravi; +Cc: linux-omap@vger.kernel.org, linux-usb
On Wed, Apr 29, 2009 at 04:32:21PM +0530, Remith Ravi wrote:
> Hi,
>
> I have a query on OMAP3530 USB EHCI Power Management.
> USB EHCI port is not switching off the port during suspend activity
> and it is drawing current from the system.
>
> Is the power management tested for USB EHCI ?
> In file "drivers/usb/host/ehci-omap.c", the function
> ehci_hcd_omap_drv_suspend() and ehci_hcd_omap_drv_resume() is
> commented out.
>
> Did anybody tried power management on USB EHCI ?
On some EHCI controllers, yes, it has been tested and works. However it
looks like for your specific hardware, it hasn't been.
Care to send us patches to implement it as you have the hardware to test
it out with?
thanks,
greg k-h
^ permalink raw reply [flat|nested] 2+ messages in thread
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