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USB resume not waking device from Standby

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USB resume not waking device from Standby

‎01-12-2012 05:12 AM
802 Views
hbucknell
Contributor I

Has anyone experienced this problem? We want to place the device into a low power mode while the PC is Sleeping, but when the PC powers up the device does not wake correctly.

linux-2.6.31 BSP

imx233

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‎01-12-2012 06:21 AM
683 Views
Felix1z
Contributor I

Confirmed. Same here. To solve the issue i run watchdog interrupts, they wake device, i service them, and if usb is not awake i'm entering to low power mode. 300mS of high power, every 3 seconds is best it can do. It seems that usb interrupts cannot wake device. Unless we both are doing something wrong.

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