diff options
author | Peter Chen <peter.chen@freescale.com> | 2015-02-10 23:44:50 -0500 |
---|---|---|
committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2015-03-18 11:19:09 -0400 |
commit | 01e3ad863fc0f15b802c8a5247e1c252bd04f429 (patch) | |
tree | 8221394e1808840495053cd81492d3ca1c6804cc /Documentation | |
parent | 6d6531104d20692190690ed73eaaac770c42aa49 (diff) |
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>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'Documentation')
-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 995c8bca40e2..3f848c1f2940 100644 --- a/Documentation/usb/chipidea.txt +++ b/Documentation/usb/chipidea.txt | |||
@@ -69,3 +69,24 @@ cat /sys/kernel/debug/ci_hdrc.0/registers | |||
69 | ---------------------- | 69 | ---------------------- |
70 | "On-The-Go and Embedded Host Supplement to the USB Revision 2.0 Specification | 70 | "On-The-Go and Embedded Host Supplement to the USB Revision 2.0 Specification |
71 | July 27, 2012 Revision 2.0 version 1.1a" | 71 | July 27, 2012 Revision 2.0 version 1.1a" |
72 | |||
73 | 2. How to enable USB as system wakeup source | ||
74 | ----------------------------------- | ||
75 | Below is the example for how to enable USB as system wakeup source | ||
76 | at imx6 platform. | ||
77 | |||
78 | 2.1 Enable core's wakeup | ||
79 | echo enabled > /sys/bus/platform/devices/ci_hdrc.0/power/wakeup | ||
80 | 2.2 Enable glue layer's wakeup | ||
81 | echo enabled > /sys/bus/platform/devices/2184000.usb/power/wakeup | ||
82 | 2.3 Enable PHY's wakeup (optional) | ||
83 | echo enabled > /sys/bus/platform/devices/20c9000.usbphy/power/wakeup | ||
84 | 2.4 Enable roothub's wakeup | ||
85 | echo enabled > /sys/bus/usb/devices/usb1/power/wakeup | ||
86 | 2.5 Enable related device's wakeup | ||
87 | echo enabled > /sys/bus/usb/devices/1-1/power/wakeup | ||
88 | |||
89 | If the system has only one usb port, and you want usb wakeup at this port, you | ||
90 | can use below script to enable usb wakeup. | ||
91 | for i in $(find /sys -name wakeup | grep usb);do echo enabled > $i;done; | ||
92 | |||