diff options
| author | Li Jun <jun.li@freescale.com> | 2015-06-01 10:34:42 +0800 |
|---|---|---|
| committer | Li Jun <jun.li@freescale.com> | 2015-06-05 16:05:58 +0800 |
| commit | 8de6b09949cf2c6df24230f67fb9fa29795482da (patch) | |
| tree | 45939235d9b825cd074391788bc9af031d465c83 /Documentation | |
| parent | 50a48196060c4cc5ca41240d35ef1dd32fac2074 (diff) | |
MLK-11005-6 Documentation: usb: chipidea: add usb OTG ADP test
Add how to enable USB OTG ADP feature and test sequence.
Signed-off-by: Li Jun <jun.li@freescale.com>
Diffstat (limited to 'Documentation')
| -rw-r--r-- | Documentation/usb/chipidea.txt | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/Documentation/usb/chipidea.txt b/Documentation/usb/chipidea.txt index 678ebb986f55..5b3878cbf070 100644 --- a/Documentation/usb/chipidea.txt +++ b/Documentation/usb/chipidea.txt @@ -88,6 +88,19 @@ end device by: echo 1 or 0 > /sys/bus/platform/devices/ci_hdrc.0/inputs/hnp_enable If this input is 0, only OTG role switch by ID pin detection can be supported. +1.6 Enable and test USB OTG ADP +---------------------- +Enable: +1) Enable OTG FSM as 1.1 +2) Add "adp-support" properity in dts for your hardware + +Test sequence: +1) Connect 2 OTG devices, enable HNP by enable hnp_enable at 2 boards + echo 1 > /sys/bus/platform/devices/ci_hdrc.0/inputs/hnp_enable +2) After A-device ends session(remove B-device and wait 10s, or a_bus_drop) +3) Remove B-device, B-device will show "OTG device detached". +4) Insert B-device, A-device will enumerate B-device. + 2. How to enable USB as system wakeup source ----------------------------------- Below is the example for how to enable USB as system wakeup source |