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 -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html