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| author | Li Jun <b47624@freescale.com> | 2014-06-25 15:28:45 +0800 |
|---|---|---|
| committer | Jason Liu <jason.hui.liu@nxp.com> | 2019-02-12 10:21:34 +0800 |
| commit | a07193074bfe03bd838041fd6ae319ebdbb91a2a (patch) | |
| tree | 4860d065d0d26bb76f50b459d24b9fbe25135606 /Documentation/usb/chipidea.txt | |
| parent | 680ed7f042e74dab0c043ef9bdfa67255dc1e600 (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/chipidea.txt')
| -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 |