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| author | Dave Airlie <airlied@redhat.com> | 2015-04-20 01:32:26 (GMT) |
|---|---|---|
| committer | Dave Airlie <airlied@redhat.com> | 2015-04-20 03:05:20 (GMT) |
| commit | 2c33ce009ca2389dbf0535d0672214d09738e35e (patch) | |
| tree | 6186a6458c3c160385d794a23eaf07c786a9e61b /Documentation/usb/chipidea.txt | |
| parent | cec32a47010647e8b0603726ebb75b990a4057a4 (diff) | |
| parent | 09d51602cf84a1264946711dd4ea0dddbac599a1 (diff) | |
| download | linux-2c33ce009ca2389dbf0535d0672214d09738e35e.tar.xz | |
Merge Linus master into drm-next
The merge is clean, but the arm build fails afterwards,
due to API changes in the regulator tree.
I've included the patch into the merge to fix the build.
Signed-off-by: Dave Airlie <airlied@redhat.com>
Diffstat (limited to 'Documentation/usb/chipidea.txt')
| -rw-r--r-- | Documentation/usb/chipidea.txt | 21 |
1 files changed, 21 insertions, 0 deletions
diff --git a/Documentation/usb/chipidea.txt b/Documentation/usb/chipidea.txt index 995c8bc..3f848c1 100644 --- a/Documentation/usb/chipidea.txt +++ b/Documentation/usb/chipidea.txt @@ -69,3 +69,24 @@ 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; + |