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| author | Peter Chen <peter.chen@freescale.com> | 2014-12-23 13:11:34 +0800 |
|---|---|---|
| committer | Nitin Garg <nitin.garg@freescale.com> | 2015-01-15 21:19:08 -0600 |
| commit | c0ef1f7b695ee4b98064936c5cf9ca49b1629207 (patch) | |
| tree | 82702bd0693755e952a41c2476eea4dddf6a143e /Documentation | |
| parent | b11fb117866f88db00f01afe6dbcdea8f6de3268 (diff) | |
MLK-10088-10 doc: usb: chipidea: add usb wakeup enable example
Add the example for how to enable USB as system wakeup source.
Signed-off-by: Peter Chen <peter.chen@freescale.com>
Diffstat (limited to 'Documentation')
| -rw-r--r-- | Documentation/usb/chipidea.txt | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/Documentation/usb/chipidea.txt b/Documentation/usb/chipidea.txt index 995c8bca40e2..8974578facc1 100644 --- a/Documentation/usb/chipidea.txt +++ b/Documentation/usb/chipidea.txt @@ -69,3 +69,23 @@ cat /sys/kernel/debug/ci_hdrc.0/registers ---------------------- "On-The-Go and Embedded Host Supplement to the USB Revision 2.0 Specification July 27, 2012 Revision 2.0 version 1.1a" + +2. How to enable USB as system wakeup source +----------------------------------- +Below is the example for how to enable USB as system wakeup source +at imx6 platform. + +2.1 Enable core's wakeup +echo enabled > /sys/bus/platform/devices/ci_hdrc.0/power/wakeup +2.2 Enable glue layer's wakeup +echo enabled > /sys/bus/platform/devices/2184000.usb/power/wakeup +2.3 Enable PHY's wakeup (optional) +echo enabled > /sys/bus/platform/devices/20c9000.usbphy/power/wakeup +2.4 Enable roothub's wakeup +echo enabled > /sys/bus/usb/devices/usb1/power/wakeup +2.5 Enable related device's wakeup +echo enabled > /sys/bus/usb/devices/1-1/power/wakeup + +If the system has only one usb port, and you want usb wakeup at this port, you +can use below script to enable usb wakeup. +for i in $(find /sys -name wakeup | grep usb);do echo enabled > $i;done; |