On Thu, Mar 19, 2015 at 11:11:25AM +0800, Li Jun wrote: > From: Li Jun <b47624@xxxxxxxxxxxxx> > > Update HNP test procedure as HNP polling is supported. > > Signed-off-by: Li Jun <jun.li@xxxxxxxxxxxxx> > --- > Documentation/usb/chipidea.txt | 11 ++++++----- > 1 file changed, 6 insertions(+), 5 deletions(-) > > diff --git a/Documentation/usb/chipidea.txt b/Documentation/usb/chipidea.txt > index 3f848c1..ff965b2 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: > + 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 why is this still chipidea specific ? Why isn't this part on udc-core so that all OTG UDCs can support this too ? -- balbi
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