How to enable xhci_dbg_trace?

=y · Ftrace usage: ; -t debugfs none /sys/kernel/ debug / · HOST Mode: ; 1 > /sys/kernel/ debug / tracing /events/ xhci -hcd/ enable · GADGET Mode: ; 1 > /sys/

Hardware Configure USB in Kernel Verify USB in sysfs Use USB Debug USB root@am57xx-evm:~# ls /sys/kernel/ debug / tracing /events/ xhci -hcd/ enable

I'm debugging an USB xHCI host controller issue So I want to print information deeply with USB In windows XP, I will do ed USBPORT!

The xHCI specification describes DbC in the section 76 When DbC is initialized and enabled , it will present a debug device through the debug port

trace -cmd plugin for parsing in a human readable format xhci tracing output To use the plugin_xhcipy, you need first to download and install the

Dynamic debugging is a kernel debug mechanism that aims to allow linux users and developers to dynamically enable or suppress kernel