On Wed, 21 Sep 2005 [EMAIL PROTECTED] wrote: > Hi > I've been designing a USB device (P18F2455) to communicate with PC(running > Linux OS), when the USB peripheral clock speed is 48MHZ and CPU works at > 16MHZ, the device works fine, and the Enumeration process is very fast. > > But, if the CPU clock speed is changed to 4MHZ and the USB peripheral clock > speed remains the same, the initialization fails most times(and it succeeds > sometimes, but not offten). > > Oddly enough, when I connect the device to Windows 2000, it works even when > the CPU clock speed is set to 1MHZ(and runs pretty well at 4MHZ)!! > > My manager wishes it to work at 4MHZ, but I don't even get the idea which > part > the fault lies in, the device part or the Linux usb driver. > > My linux kernel is 2.4.8-20, but I've tried 2.6.11.11 and it works no better.
Try using 2.6.41-rc1 or later. Alan Stern ------------------------------------------------------- SF.Net email is sponsored by: Tame your development challenges with Apache's Geronimo App Server. Download it for free - -and be entered to win a 42" plasma tv or your very own Sony(tm)PSP. Click here to play: http://sourceforge.net/geronimo.php _______________________________________________ [email protected] To unsubscribe, use the last form field at: https://lists.sourceforge.net/lists/listinfo/linux-usb-users
