diff options
Diffstat (limited to 'Documentation/usb/chipidea.txt')
| -rw-r--r-- | Documentation/usb/chipidea.txt | 9 |
1 files changed, 4 insertions, 5 deletions
diff --git a/Documentation/usb/chipidea.txt b/Documentation/usb/chipidea.txt index 8974578facc1..3dfda8de5f89 100644 --- a/Documentation/usb/chipidea.txt +++ b/Documentation/usb/chipidea.txt @@ -26,14 +26,13 @@ cat /sys/kernel/debug/ci_hdrc.0/registers On B-device: echo 1 > /sys/bus/platform/devices/ci_hdrc.0/inputs/b_bus_req - if HNP polling is not supported, also need: - On A-device: - echo 0 > /sys/bus/platform/devices/ci_hdrc.0/inputs/a_bus_req - B-device should take host role and enumrate A-device. 4) A-device switch back to host. - On B-device: + On A-device: + echo 1 > /sys/bus/platform/devices/ci_hdrc.0/inputs/a_bus_req + + or, on B-device: echo 0 > /sys/bus/platform/devices/ci_hdrc.0/inputs/b_bus_req A-device should switch back to host and enumrate B-device. |