I have a running 2.4.26 Linux kernel (penguinppc.org) on a commercial built embedded PPC405 (Xilinx VirtexII Pro) attached to a Cypress SL811 shown to work, I am now trying to attach a Texas Instruments TUSB2077a Hub chip. When I first attach the hub to the host on Data +/- (pins 7 & 8) the host recognizes the hub and then reports "USB device not accepting new address (error=-110)
** SNIP **
/dev # cd /mnt
/mnt # insmod usbcore.o -f
Warning: kernel-module version mismatch
usbcore.o was compiled for kernel version 2.4.26-msi
while this kernel is version 2.4.26-pre3
Warning: loading usbcore.o will taint the kernel: forced load
See http://www.tux.org/lkml/#export-tainted for information about tainted modules
Module usbcore loaded, with warnings
/mnt # insmod -f sl__
/mnt # insmod -f sl811.o _[J
Warning: kernel-module version mismatch
sl811.o was compiled for kernel version 2.4.26-msi
while this kernel is version 2.4.26-pre3
Warning: loading sl811.o will taint the kernel: no license
See http://www.tux.org/lkml/#export-tainted for information about tainted modules
Warning: loading sl811.o will taint the kernel: forced load
Module sl811 loaded, with warnings
/mnt #
; MSC - External Hub is identified
; MSC - And reports over-current on three of the four available ports
hub.c: port 2 over-current change
hub.c: port 3 over-current change
hub.c: port 4 over-current change
; MSC – Host controller unable to set USB address on new HUB
; Hub is disconnected and un-reachable from this point on
hub.c: USB device not accepting new address (error=-110)
hub.c: error resetting hub 2 - disconnecting
** SNIP **
At this point the hub is completely un-responsive, but re-plugging the hub will return the same results. If I have a thumb drive attached to the hub, before I plug the hub into the host controller, I see the thumb drive properly but exit with the same error "USB device not accepting new address (error=-110).
** SNIP **
usb.c: USB device 2 (vend/prod 0x781/0x7104) is not claimed by any active driver.
; MSC – Thumb drive is enumberated
Length = 18
DescriptorType = 01
USB version = 2.00
Vendor:Product = 0781:7104
MaxPacketSize0 = 64
NumConfigurations = 1
Device version = 10.33
Device Class:SubClass:Protocol = 00:00:00
Per-interface classes
Configuration:
bLength = 9
. . . . .
bInterval = 00
; MSC – Host controller unable to set USB address on new HUB
; Hub is disconnected and un-reachable from this point on
hub.c: USB device not accepting new address (error=-110)
hub.c: error resetting hub 127 - disconnecting
** SNIP **
What am I doing wrong?
Michael S. Chaffin
Satellite Test Engineer
MicroSat Systems, Inc.
microsatsystems.com
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