On Tue, Jan 19, 2016 at 01:45:37PM +0800, Li Jun wrote: > Update HNP test procedure as HNP polling is supported. > > Signed-off-by: Li Jun <jun.li@xxxxxxx> > --- > Documentation/usb/chipidea.txt | 9 +++++---- > 1 file changed, 5 insertions(+), 4 deletions(-) > > diff --git a/Documentation/usb/chipidea.txt b/Documentation/usb/chipidea.txt > index 05f735a..678741b 100644 > --- a/Documentation/usb/chipidea.txt > +++ b/Documentation/usb/chipidea.txt > @@ -26,16 +26,17 @@ 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: > 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 > + to be host role, so this role switch also can be trigged in A-peripheral > + side by answering the polling from B-Host, this can be done on A-device: > + echo 1 > /sys/bus/platform/devices/ci_hdrc.0/inputs/a_bus_req > + > A-device should switch back to host and enumrate B-device. > > 5) Remove B-device(unplug micro B plug) and insert again in 10 seconds, > -- > 1.9.1 > Acked-by: Peter Chen <peter.chen@xxxxxxx> -- Best Regards, Peter Chen -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
