diff options
| author | Peter Chen <peter.chen@freescale.com> | 2011-12-09 14:17:24 +0800 |
|---|---|---|
| committer | Peter Chen <peter.chen@freescale.com> | 2011-12-13 11:38:13 +0800 |
| commit | 6fe19870720f0c91402e683f2fd8f4a578a35557 (patch) | |
| tree | 5b6f8b3658ad870af9f0daa6c27c862710003627 /Documentation | |
| parent | a327cd285ca0874144f8bc1ff16046c384fec179 (diff) | |
ENGR00169885-2 usb-udc: Add Doc for udc
Add remote wakeup test method to udc doc
Signed-off-by: Peter Chen <peter.chen@freescale.com>
Diffstat (limited to 'Documentation')
| -rw-r--r-- | Documentation/arm/imx/udc.txt | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/Documentation/arm/imx/udc.txt b/Documentation/arm/imx/udc.txt new file mode 100644 index 000000000000..fdbaa848983b --- /dev/null +++ b/Documentation/arm/imx/udc.txt @@ -0,0 +1,16 @@ +How to test remote wakeup (Make sure connecting to usb host and gadget is loaded) +1. Prepare a usb host which featured with remote wakeup +alternatively, You can use another i.mx board (like mx50 rdp, or mx6q) +2. Boot up both boards, and connect two boards with usb cable +3. At device side, do below commands: +- modprobe g_file_storage file=/dev/mmcblk0p1 (other gadgets are also ok) +- echo 1 > /sys/devices/platform/fsl-usb2-udc/gadget/remote_wakeup +4. At host side, do below command: +- echo enabled > /sys/devices/platform/fsl-ehci.1/power/wakeup +- echo standby > /sys/power/state +5. Send Remote wakeup to wake up host +At device side, do below command: +echo 1 > /sys/devices/platform/fsl-usb2-udc/gadget/start_remote_wakeup +6. The expected behaviour is: host is waked up, and there is +not re-enumeration happens. + |