diff options
| author | Peter Chen <peter.chen@freescale.com> | 2011-12-09 14:17:24 +0800 |
|---|---|---|
| committer | Jason Liu <r64343@freescale.com> | 2012-07-20 13:18:52 +0800 |
| commit | 4f915957d7a6b92d3d9bc4ef5a8a10dd58be64fb (patch) | |
| tree | a2a0b4a24258a16ad25386547013da4b9b6e238d /Documentation | |
| parent | 9cb852009646df3a4f9296e653ef4e78f03b4efa (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. + |