diff options
| author | Li Jun <b47624@freescale.com> | 2014-06-25 15:28:45 +0800 |
|---|---|---|
| committer | Leonard Crestez <leonard.crestez@nxp.com> | 2018-08-23 16:42:41 +0300 |
| commit | a51c4739fb3dc59f54611314e0bc6e2cb459eae0 (patch) | |
| tree | 4903abb6c6196b5d7767d325fadfcd57ad70e381 /Documentation/usb | |
| parent | 5d63aaa6827847f520f7a968f1b2e492435fed6f (diff) | |
MLK-11340-34 Documentation: usb: chipidea: Update test procedure for HNP polling support
Update HNP test procedure as HNP polling is supported.
Signed-off-by: Li Jun <b47624@freescale.com>
(cherry picked from commit 4aac546c4338246b1e55647796badedf6e80bfbe)
Diffstat (limited to 'Documentation/usb')
| -rw-r--r-- | Documentation/usb/chipidea.txt | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/Documentation/usb/chipidea.txt b/Documentation/usb/chipidea.txt index edf7cdfddc88..059ee3251e63 100644 --- a/Documentation/usb/chipidea.txt +++ b/Documentation/usb/chipidea.txt @@ -32,7 +32,10 @@ cat /sys/kernel/debug/ci_hdrc.0/registers 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 or, by introducing HNP polling, B-Host can know when A-peripheral wish |