On Thursday 13 July 2006 2:22 am, Santosh M wrote: > Hi , > > I am testing the ehci-hc driver for McImx31 controller. > When a USB2.0 HS speed device(Maxtor USB 2.0 hard disk) was connected > to the IMX31 ADS board, there is no interrupt genearated & Power is not > available in the port > even after powering the USB HOST-2 port using Port Power (PP) bit is set in > PORTSC Register.
On embedded boards it's pretty common that port power switching needs external logic, with the OHCI or EHCI root hub bits being NOPs. Dedicating a pin for such a role would generally waste scarce real estate... Read your board schematics to see how VBUS is wired, and update your driver support accordingly. Maybe you just need to mux some pins correctly. - Dave ------------------------------------------------------------------------- Using Tomcat but need to do more? Need to support web services, security? Get stuff done quickly with pre-integrated technology to make your job easier Download IBM WebSphere Application Server v.1.0.1 based on Apache Geronimo http://sel.as-us.falkag.net/sel?cmd=lnk&kid=120709&bid=263057&dat=121642 _______________________________________________ [email protected] To unsubscribe, use the last form field at: https://lists.sourceforge.net/lists/listinfo/linux-usb-devel
