Hello.
For testing purposes, try replacing the hub with a different brand
and
see if that works better. If it does, you'll know that the TUSB hub
is
causing the problems.
I connected the TUSB hub on my board (still connected to 9G20 but
stopped by uboot - ohci not initialized) to PC. x86 linux detects the
HUB and the modem. Test script (AT/OK) works like a charm. This
confirmed that problem is between the TUSB hub and 9G20 OHCI.
On the other hand it seems to be a hardware problem. I got the error
-62/ETIME (cc 5 => ohci.h: TD_DEVNOTRESP) because the modem is not able
to answer (upstream or downstream is broken, how to check?). If control
packet is lost/dropped I get input/output error. In another case it
loses AT-echo chars. See usbmon log below.
I have found also similar problems:
*
http://www.microcodes.info/at91sam9g45-usb-device-updhs-does-not-work-on-hub-15399.html
* http://www.microcodes.info/ohci-debug-message-meaning-15861.html
* http://www.at91.com/forum/viewtopic.php/f,12/t,19354/
* http://www.microcodes.info/at91_ohci-lose-devices-15866.html
* http://permalink.gmane.org/gmane.linux.ports.arm.general/10198
I also reviewed my GPIOs but I didn't find a conflict.
I will try to check if there is difference between 9G20 root-hub ports.
Here is usbmon log:
c3bbf760 2069764416 C Bi:1:004:2 -2 0
c39aeec0 2069892719 S Ii:1:004:9 -115:8 16 <
c3bbfce0 2069892800 S Co:1:004:0 s 21 22 0003 0000 0000 0
c3bbfce0 2069895620 C Co:1:004:0 0 0
c3bbf760 2069895901 S Bi:1:004:2 -115 64 <
c3bbf7e0 2069895961 S Bi:1:004:2 -115 64 <
c3bbf860 2069895990 S Bi:1:004:2 -115 64 <
c39ae8c0 2069896016 S Bi:1:004:2 -115 64 <
c39ae940 2069896041 S Bi:1:004:2 -115 64 <
c39ae9c0 2069896066 S Bi:1:004:2 -115 64 <
c39aea40 2069896091 S Bi:1:004:2 -115 64 <
c39aeac0 2069896116 S Bi:1:004:2 -115 64 <
c39aeb40 2069896142 S Bi:1:004:2 -115 64 <
c39aebc0 2069896167 S Bi:1:004:2 -115 64 <
c39aec40 2069896192 S Bi:1:004:2 -115 64 <
c39aecc0 2069896217 S Bi:1:004:2 -115 64 <
c39aed40 2069896242 S Bi:1:004:2 -115 64 <
c39aedc0 2069896268 S Bi:1:004:2 -115 64 <
c39aee40 2069896292 S Bi:1:004:2 -115 64 <
c39aef40 2069896317 S Bi:1:004:2 -115 64 <
c3bbf760 2069917746 C Bi:1:004:2 -62 0
c3bbf760 2069917820 S Bi:1:004:2 -115 64 <
c3bbf7e0 2069918732 C Bi:1:004:2 -62 0
c3bbf7e0 2069918801 S Bi:1:004:2 -115 64 <
c3bbf6e0 2069932140 S Bo:1:004:1 -115 1 D
c3bbf6e0 2069932673 C Bo:1:004:1 0 1 >
c3bbf860 2069940753 C Bi:1:004:2 -62 0
c3bbf860 2069940815 S Bi:1:004:2 -115 64 <
c39ae8c0 2069941736 C Bi:1:004:2 -62 0
c39ae8c0 2069941788 S Bi:1:004:2 -115 64 <
c3bbf6e0 2069952045 S Bo:1:004:1 -115 1 D
c3bbf6e0 2069952700 C Bo:1:004:1 0 1 >
c39ae940 2069957704 C Bi:1:004:2 0 1 D
c39ae940 2069957818 S Bi:1:004:2 -115 64 <
c3bbf6e0 2069971999 S Bo:1:004:1 -115 1 D
c3bbf6e0 2069972732 C Bo:1:004:1 0 1 >
c39ae9c0 2069977734 C Bi:1:004:2 0 7 D
c39ae9c0 2069977807 S Bi:1:004:2 -115 64 <
c3bbfce0 2069984704 S Co:1:004:0 s 21 22 0000 0000 0000 0
c3bbfce0 2069987764 C Co:1:004:0 0 0
c39aeec0 2069988756 C Ii:1:004:9 -2:8 0
c39aef40 2069989761 C Bi:1:004:2 -2 0
c39aee40 2069990762 C Bi:1:004:2 -2 0
c39aedc0 2069991765 C Bi:1:004:2 -2 0
c39aed40 2069992766 C Bi:1:004:2 -2 0
c39aea40 2069993847 C Bi:1:004:2 -62 0
c39aecc0 2069993898 C Bi:1:004:2 -2 0
c39aeac0 2069994849 C Bi:1:004:2 -62 0
c39aec40 2069994901 C Bi:1:004:2 -2 0
c39aebc0 2069995770 C Bi:1:004:2 -2 0
c39aeb40 2069996773 C Bi:1:004:2 -2 0
c39ae9c0 2069997775 C Bi:1:004:2 -2 0
c39ae940 2069998776 C Bi:1:004:2 -2 0
c39ae8c0 2069999777 C Bi:1:004:2 -2 0
c3bbf860 2070000779 C Bi:1:004:2 -2 0
c3bbf7e0 2070001780 C Bi:1:004:2 -2 0
T^M^M
OK
c3bbf760 2070004786 C Bi:1:004:2 -2 0
c39aeec0 2070135748 S Ii:1:004:9 -115:8 16 <
c3bbfce0 2070135830 S Co:1:004:0 s 21 22 0003 0000 0000 0
c3bbfce0 2070137991 C Co:1:004:0 0 0
c3bbf760 2070138283 S Bi:1:004:2 -115 64 <
c3bbf7e0 2070138342 S Bi:1:004:2 -115 64 <
c3bbf860 2070138371 S Bi:1:004:2 -115 64 <
c39ae8c0 2070138398 S Bi:1:004:2 -115 64 <
c39ae940 2070138423 S Bi:1:004:2 -115 64 <
c39ae9c0 2070138448 S Bi:1:004:2 -115 64 <
c39aea40 2070138474 S Bi:1:004:2 -115 64 <
c39aeac0 2070138498 S Bi:1:004:2 -115 64 <
c39aeb40 2070138524 S Bi:1:004:2 -115 64 <
c39aebc0 2070138549 S Bi:1:004:2 -115 64 <
c39aec40 2070138574 S Bi:1:004:2 -115 64 <
c39aecc0 2070138600 S Bi:1:004:2 -115 64 <
c39aed40 2070138624 S Bi:1:004:2 -115 64 <
c39aedc0 2070138650 S Bi:1:004:2 -115 64 <
c39aee40 2070138675 S Bi:1:004:2 -115 64 <
c39aef40 2070138700 S Bi:1:004:2 -115 64 <
c3bbf760 2070156095 C Bi:1:004:2 -62 0
c3bbf760 2070156164 S Bi:1:004:2 -115 64 <
c3bbf7e0 2070157096 C Bi:1:004:2 -62 0
c3bbf7e0 2070157167 S Bi:1:004:2 -115 64 <
c3bbf6e0 2070172432 S Bo:1:004:1 -115 1 D
c3bbf6e0 2070173042 C Bo:1:004:1 0 1 >
c3bbf860 2070177041 C Bi:1:004:2 0 1 D
c3bbf860 2070177156 S Bi:1:004:2 -115 64 <
c3bbf6e0 2070192290 S Bo:1:004:1 -115 1 D
c3bbf6e0 2070193069 C Bo:1:004:1 0 1 >
c39ae8c0 2070197071 C Bi:1:004:2 0 1 D
c39ae8c0 2070197145 S Bi:1:004:2 -115 64 <
c3bbf6e0 2070212290 S Bo:1:004:1 -115 1 D
c3bbf6e0 2070213108 C Bo:1:004:1 0 1 >
c39ae940 2070217102 C Bi:1:004:2 0 7 D
c39ae940 2070217176 S Bi:1:004:2 -115 64 <
c3bbfce0 2070225028 S Co:1:004:0 s 21 22 0000 0000 0000 0
c3bbfce0 2070227128 C Co:1:004:0 0 0
c39aeec0 2070228122 C Ii:1:004:9 -2:8 0
c39aef40 2070229128 C Bi:1:004:2 -2 0
c39aee40 2070230129 C Bi:1:004:2 -2 0
c39aedc0 2070231131 C Bi:1:004:2 -2 0
c39aed40 2070232133 C Bi:1:004:2 -2 0
c39aecc0 2070233133 C Bi:1:004:2 -2 0
c39aec40 2070234137 C Bi:1:004:2 -2 0
c39aebc0 2070235137 C Bi:1:004:2 -2 0
c39aeb40 2070236140 C Bi:1:004:2 -2 0
c39aeac0 2070237139 C Bi:1:004:2 -2 0
c39aea40 2070238142 C Bi:1:004:2 -2 0
c39ae9c0 2070239143 C Bi:1:004:2 -2 0
c39ae940 2070240145 C Bi:1:004:2 -2 0
c39ae8c0 2070241146 C Bi:1:004:2 -2 0
c3bbf860 2070242148 C Bi:1:004:2 -2 0
c3bbf7e0 2070243149 C Bi:1:004:2 -2 0
c3bbf760 2070244151 C Bi:1:004:2 -2 0
AT^M^M
OK
c39aeec0 2070374541 S Ii:1:004:9 -115:8 16 <
c3bbfce0 2070374624 S Co:1:004:0 s 21 22 0003 0000 0000 0
c3bbfce0 2070377356 C Co:1:004:0 0 0
c3bbf760 2070377639 S Bi:1:004:2 -115 64 <
c3bbf7e0 2070377696 S Bi:1:004:2 -115 64 <
c3bbf860 2070377726 S Bi:1:004:2 -115 64 <
c39ae8c0 2070377753 S Bi:1:004:2 -115 64 <
c39ae940 2070377778 S Bi:1:004:2 -115 64 <
c39ae9c0 2070377803 S Bi:1:004:2 -115 64 <
c39aea40 2070377829 S Bi:1:004:2 -115 64 <
c39aeac0 2070377854 S Bi:1:004:2 -115 64 <
c39aeb40 2070377879 S Bi:1:004:2 -115 64 <
c39aebc0 2070377904 S Bi:1:004:2 -115 64 <
c39aec40 2070377930 S Bi:1:004:2 -115 64 <
c39aecc0 2070377955 S Bi:1:004:2 -115 64 <
c39aed40 2070377980 S Bi:1:004:2 -115 64 <
c39aedc0 2070378005 S Bi:1:004:2 -115 64 <
c39aee40 2070378030 S Bi:1:004:2 -115 64 <
c39aef40 2070378054 S Bi:1:004:2 -115 64 <
c3bbf6e0 2070412689 S Bo:1:004:1 -115 1 D
c3bbf6e0 2070413402 C Bo:1:004:1 0 1 >
c3bbf760 2070417404 C Bi:1:004:2 0 1 D
c3bbf760 2070417518 S Bi:1:004:2 -115 64 <
c3bbf6e0 2070432629 S Bo:1:004:1 -115 1 D
c3bbf6e0 2070433433 C Bo:1:004:1 0 1 >
c3bbf7e0 2070437435 C Bi:1:004:2 0 1 D
c3bbf7e0 2070437508 S Bi:1:004:2 -115 64 <
c3bbf6e0 2070452622 S Bo:1:004:1 -115 1 D
c3bbf6e0 2070453471 C Bo:1:004:1 0 1 >
c3bbf860 2070457465 C Bi:1:004:2 0 7 D
c3bbf860 2070457539 S Bi:1:004:2 -115 64 <
c3bbfce0 2070465299 S Co:1:004:0 s 21 22 0000 0000 0000 0
c39ae8c0 2070465631 C Bi:1:004:2 -62 0
c3bbfce0 2070465674 C Co:1:004:0 -62 0
c39ae940 2070466566 C Bi:1:004:2 -62 0
c39aeec0 2070466621 C Ii:1:004:9 -2:8 0
c39aef40 2070467492 C Bi:1:004:2 -2 0
c39aee40 2070468494 C Bi:1:004:2 -2 0
c39aedc0 2070469496 C Bi:1:004:2 -2 0
c39aed40 2070470496 C Bi:1:004:2 -2 0
c39aecc0 2070471498 C Bi:1:004:2 -2 0
c39aec40 2070472499 C Bi:1:004:2 -2 0
c39aebc0 2070476507 C Bi:1:004:2 -2 0
c39aeb40 2070477507 C Bi:1:004:2 -2 0
c39aeac0 2070478509 C Bi:1:004:2 -2 0
c39aea40 2070479509 C Bi:1:004:2 -2 0
c39ae9c0 2070480512 C Bi:1:004:2 -2 0
c3bbf860 2070481512 C Bi:1:004:2 -2 0
c3bbf7e0 2070482514 C Bi:1:004:2 -2 0
c3bbf760 2070483516 C Bi:1:004:2 -2 0
AT^M^M
OK
c39aeec0 2070611126 S Ii:1:004:9 -115:8 16 <
c3bbfce0 2070611209 S Co:1:004:0 s 21 22 0003 0000 0000 0
c3bbfce0 2070611787 C Co:1:004:0 -62 0
c39aeec0 2070612745 C Ii:1:004:9 -2:8 0
./chat_at_go: line 3: /dev/ttyACM0: Input/output error
c39aeec0 2070735907 S Ii:1:004:9 -115:8 16 <
c3bbfce0 2070735989 S Co:1:004:0 s 21 22 0003 0000 0000 0
c3bbfce0 2070737909 C Co:1:004:0 0 0
c3bbf760 2070738194 S Bi:1:004:2 -115 64 <
c3bbf7e0 2070738252 S Bi:1:004:2 -115 64 <
c3bbf860 2070738282 S Bi:1:004:2 -115 64 <
c39ae8c0 2070738307 S Bi:1:004:2 -115 64 <
c39ae940 2070738333 S Bi:1:004:2 -115 64 <
c39ae9c0 2070738359 S Bi:1:004:2 -115 64 <
c39aea40 2070738384 S Bi:1:004:2 -115 64 <
c39aeac0 2070738409 S Bi:1:004:2 -115 64 <
c39aeb40 2070738435 S Bi:1:004:2 -115 64 <
c39aebc0 2070738459 S Bi:1:004:2 -115 64 <
c39aec40 2070738484 S Bi:1:004:2 -115 64 <
c39aecc0 2070738509 S Bi:1:004:2 -115 64 <
c39aed40 2070738534 S Bi:1:004:2 -115 64 <
c39aedc0 2070738559 S Bi:1:004:2 -115 64 <
c39aee40 2070738584 S Bi:1:004:2 -115 64 <
c39aef40 2070738609 S Bi:1:004:2 -115 64 <
c3bbf6e0 2070773128 S Bo:1:004:1 -115 1 D
c3bbf6e0 2070773957 C Bo:1:004:1 0 1 >
c3bbf760 2070777958 C Bi:1:004:2 0 1 D
c3bbf760 2070778072 S Bi:1:004:2 -115 64 <
c3bbf6e0 2070793081 S Bo:1:004:1 -115 1 D
c3bbf6e0 2070793987 C Bo:1:004:1 0 1 >
c3bbf7e0 2070797988 C Bi:1:004:2 0 1 D
c3bbf7e0 2070798059 S Bi:1:004:2 -115 64 <
c3bbf6e0 2070813074 S Bo:1:004:1 -115 1 D
c3bbf6e0 2070814023 C Bo:1:004:1 0 1 >
c3bbf860 2070818021 C Bi:1:004:2 0 7 D
c3bbf860 2070818096 S Bi:1:004:2 -115 64 <
c3bbfce0 2070825790 S Co:1:004:0 s 21 22 0000 0000 0000 0
c3bbfce0 2070828049 C Co:1:004:0 0 0
c39aeec0 2070829041 C Ii:1:004:9 -2:8 0
c39aef40 2070830048 C Bi:1:004:2 -2 0
c39aee40 2070831049 C Bi:1:004:2 -2 0
c39aedc0 2070832051 C Bi:1:004:2 -2 0
c39aed40 2070833050 C Bi:1:004:2 -2 0
c39aecc0 2070834054 C Bi:1:004:2 -2 0
c39aec40 2070835055 C Bi:1:004:2 -2 0
c39aebc0 2070836056 C Bi:1:004:2 -2 0
c39aeb40 2070837058 C Bi:1:004:2 -2 0
c39aeac0 2070838060 C Bi:1:004:2 -2 0
c39aea40 2070839063 C Bi:1:004:2 -2 0
c39ae9c0 2070840062 C Bi:1:004:2 -2 0
c39ae940 2070841064 C Bi:1:004:2 -2 0
c39ae8c0 2070842065 C Bi:1:004:2 -2 0
c3bbf860 2070843069 C Bi:1:004:2 -2 0
c3bbf7e0 2070844069 C Bi:1:004:2 -2 0
c3bbf760 2070845070 C Bi:1:004:2 -2 0
AT^M^M
OK
best regards
Janusz
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