Hello Maulik, I have exactly the same problem with my USB host controller, which i haven't been able to resolve for the last two weeks. I am working with an IXP425 and an external Philips isp116a1 USB host controller. I am also using kernel 2.6.12 and uClinux. My isp116a1 HC driver loads properly however as soon as i plug a device it results in
usb 1-1: device not accepting address 2, error -110 I did try with kernel 2.6.14 but it didn't help as i was getting the same timeout error -110. It is rather interesting as i have the same setup working fine under kernel 2.4.27. I was told to put 'noapic' in the kernel command line but that was of no help too. I did setup the usb HC exactly as i have it under kernel 2.4.27 again nothing so i am not sure where the problem lies any more, initially i thought it was the HC driver. Could it be something IXP4XX specific ... a timing issue perhaps ... i don't know but work is ongoing so i'll let you know if i find out the cause. In the mean time please let me know if you find out how to fix that error -110 problem. Good luck ! Danny Ignatov Thales Advanced Engineering South Africa Alan Stern wrote: > [Thread moved to linux-usb-devel, which seems more appropriate] > > On Wed, 21 Jun 2006, Maulik Mankad wrote: > >> Hello Alan, >> >> I am a member of the Linux usb user group and am very new to USB >> device drivers >> and USB specifications. >> >> I am working on USB host driver porting for Intel's IXDP465 network >> processor. > > Good for you. It's not an easy job... > >> I am using Snap gear Linux Kernel 2.6.12, which runs on IXDP465. >> >> I am facing the following issues: - >> >> (1) The USB bus enumeration does not complete fully. The request for >> getting the >> device descriptor fails with timeout error. >> "device descriptor read/64, error -110" >> >> (2) My USB host controller is EHCI compliant. Although it supports >> only full and >> low speed mode. There are neither transaction translators nor companion >> controllers available with the USB host. > > This sounds backward. EHCI supports only high speed, not full or low > speed. If the host doesn't have full-speed capability then it is not > USB-2.0 compliant. > >> (3) I have ported the host driver using the host controller >> registers. The host >> gets initialized properly and I do get interrupts on plugging / >> unplugging of a >> USB device (pen drive) to the device port. I also do get the SOF’s >> occurring >> down the enabled port. >> >> (4) The asynchronous schedule also executes properly as I get >> interrupts for >> asynchronous schedule advance. >> >> (5) The host is not able to set the address of the device. This >> request also >> times out with error "usb 1-1: device not accepting address 3, error >> -110". >> >> The request for the device descriptor and SET_ADDRESS gets submitted >> properly in >> the queue. But somehow the timer times out and a function >> timeout_kill () gets >> called. This function then >> calls a function usb_unlink_urb (), which aborts the request and >> removes it from >> the queue. Does any one know why this can happen? > > Certainly. The timer expires because the request doesn't complete > quickly enough. Probably because a bug in your driver prevents the > request from completing at all. > > What does a bus trace reveal? > >> Can anyone let me know what can be the issue in this case? I am >> struggling with >> the above issue from three weeks now. Also has anyone worked with >> IXDP465 USB >> host controller? >> Please share your experience. >> >> Please let me know if you need more details. >> >> Thanks, >> Maulik Mankad > > Alan Stern > > > > _______________________________________________ > linux-usb-devel@lists.sourceforge.net > To unsubscribe, use the last form field at: > https://lists.sourceforge.net/lists/listinfo/linux-usb-devel > All the advantages of Linux Managed Hosting--Without the Cost and Risk! Fully trained technicians. The highest number of Red Hat certifications in the hosting industry. Fanatical Support. Click to learn more http://sel.as-us.falkag.net/sel?cmd=lnk&kid=107521&bid=248729&dat=121642 _______________________________________________ linux-usb-devel@lists.sourceforge.net To unsubscribe, use the last form field at: https://lists.sourceforge.net/lists/listinfo/linux-usb-devel
