Re: [PATCH] OMAP: USB : Fix the EHCI enumeration and core retention issue

[Alan Stern <stern@xxxxxxxxxxxxxxxxxxx>]

On Fri, 22 Jun 2012, Kevin Hilman wrote:

> As I said way back in the beginning this thread.  The runtime PM of this
> driver is leaving the device enabled.
> 
> To test idle retention, ensure the UART auto-suspend is enable for all
> UARTS:
> 
> echo 3000 > /sys/devices/platform/omap_uart.0/power/autosuspend_delay_ms
> echo 3000 > /sys/devices/platform/omap_uart.1/power/autosuspend_delay_ms
> echo 3000 > /sys/devices/platform/omap_uart.2/power/autosuspend_delay_ms
> echo 3000 > /sys/devices/platform/omap_uart.3/power/autosuspend_delay_ms
> 
> Then wait > 3 seconds and 'cat /debug/pm_debug/count'.  

This is probably a foolish question, but have you checked that the 
power/control attribute is set to "auto"?

Alan Stern

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