Hi ALL,
When I connect devices to tier 2 hub(Host+RootHub
named tier 1 according to USB specification), all
devices cannot be detected on ppc32/ppc64 machine, but
all these devices connected to root hub, all work
fine, following is the relative information about this
problem:
#cat /proc/bus/usb/devices
......
T: Bus=01 Lev=00 Prnt=00 Port=00 Cnt=00 Dev#= 1
Spd=480 MxCh= 5
B: Alloc= 0/800 us ( 0%), #Int= 1, #Iso= 0
D: Ver= 2.00 Cls=09(hub ) Sub=00 Prot=01 MxPS= 8
#Cfgs= 1
P: Vendor=0000 ProdID=0000 Rev= 2.06
S: Manufacturer=Linux 2.6.5-203 ehci_hcd
S: Product=NEC Corporation USB 2.0
S: SerialNumber=0000:c8:01.2
C:* #Ifs= 1 Cfg#= 1 Atr=40 MxPwr= 0mA
I: If#= 0 Alt= 0 #EPs= 1 Cls=09(hub ) Sub=00 Prot=00
Driver=hub
E: Ad=81(I) Atr=03(Int.) MxPS= 2 Ivl=256ms
T: Bus=01 Lev=01 Prnt=01 Port=00 Cnt=01 Dev#= 2
Spd=480 MxCh= 4
D: Ver= 2.00 Cls=09(hub ) Sub=00 Prot=01 MxPS=64
#Cfgs= 1
P: Vendor=05e3 ProdID=0660 Rev= 5.07
S: Product=USB2.0 Hub
C:* #Ifs= 1 Cfg#= 1 Atr=e0 MxPwr=100mA
I: If#= 0 Alt= 0 #EPs= 1 Cls=09(hub ) Sub=00 Prot=00
Driver=hub
E: Ad=81(I) Atr=03(Int.) MxPS= 1 Ivl=256ms
#cat /proc/cpuinfo
processor : 0
cpu : POWER5 (gr)
clock : 1502.496000MHz
revision : 2.2
processor : 1
cpu : POWER5 (gr)
clock : 1502.496000MHz
revision : 2.2
processor : 2
cpu : POWER5 (gr)
clock : 1502.496000MHz
revision : 2.2
processor : 3
cpu : POWER5 (gr)
clock : 1502.496000MHz
revision : 2.2
timebase : 188046000
machine : CHRP IBM,9113-550
#lspci
0000:00:02.0 PCI bridge: IBM: Unknown device 0188 (rev
03)
0000:00:02.2 PCI bridge: IBM: Unknown device 0188 (rev
03)
0000:00:02.3 PCI bridge: IBM: Unknown device 0188 (rev
03)
0000:00:02.4 PCI bridge: IBM: Unknown device 0188 (rev
03)
0000:00:02.6 PCI bridge: IBM: Unknown device 0188 (rev
03)
0000:c8:01.0 USB Controller: NEC Corporation USB (rev
43)
0000:c8:01.1 USB Controller: NEC Corporation USB (rev
43)
0000:c8:01.2 USB Controller: NEC Corporation USB 2.0
(rev 04)
0000:cc:01.0 Unknown mass storage controller: Promise
Technology, Inc. 20275 (rev 01)
0001:00:02.0 PCI bridge: IBM: Unknown device 0188 (rev
03)
0001:00:02.2 PCI bridge: IBM: Unknown device 0188 (rev
03)
0001:00:02.4 PCI bridge: IBM: Unknown device 0188 (rev
03)
0001:00:02.6 PCI bridge: IBM: Unknown device 0188 (rev
03)
0001:c8:01.0 Ethernet controller: Intel Corp. 82546EB
Gigabit Ethernet Controller (Copper) (rev 01)
0001:c8:01.1 Ethernet controller: Intel Corp. 82546EB
Gigabit Ethernet Controller (Copper) (rev 01)
0001:d0:01.0 SCSI storage controller: Mylex
Corporation Gemstone chipset SCSI controller (rev 04)
0001:d8:01.0 PCI bridge: Hint Corp HB6 Universal
PCI-PCI bridge (non-transparent mode) (rev 15)
0001:d9:00.0 VGA compatible controller: Matrox
Graphics, Inc. MGA G400 AGP (rev 85)
#uname -a
Linux mcpsf4 2.6.5-203 #2 SMP Thu Nov 24 09:15:18 UTC
2005 ppc64 ppc64 ppc64 GNU/Linux
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