From a51c4739fb3dc59f54611314e0bc6e2cb459eae0 Mon Sep 17 00:00:00 2001 From: Li Jun Date: Wed, 25 Jun 2014 15:28:45 +0800 Subject: 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 (cherry picked from commit 4aac546c4338246b1e55647796badedf6e80bfbe) --- Documentation/usb/chipidea.txt | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) (limited to 'Documentation/usb') 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 -- cgit v1.2.3