GTA01 USB host mode

christophe buton christophe.buton at gemalto.com
Tue Jan 22 09:05:47 CET 2008


Hi,

I own a Neo 1973 GTA01 BV4 and averything is working fine to download 
load kernel and filesystem to SD and then run it.
I need to switch usb to host and for this I follow this procedure: 
http://wiki.openmoko.org/wiki/Neo1973_USB_host
I patch a 2.6.22.5 kernel following procedure from 
http://wiki.openmoko.org/wiki/Kernel. Everything seems ok as the file 
/sys/devices/platform/s3c2410-ohci/usb_mode| |is present.
Unfortunately when I switch to usb host mode I get the following 
messages in var/log/messages:

Jan 22 13:38:40 fic-gta01 user.warn kernel: s3c2410: changing usb to host
Jan 22 13:38:40 fic-gta01 user.info kernel: usb 1-2: new full speed USB 
device using s3c2410-ohci and address 3
Jan 22 13:38:40 fic-gta01 user.err kernel: usb 1-2: device descriptor 
read/64, error -62
Jan 22 13:38:41 fic-gta01 user.err kernel: usb 1-2: device descriptor 
read/64, error -62
Jan 22 13:38:41 fic-gta01 user.info kernel: usb 1-2: new full speed USB 
device using s3c2410-ohci and address 4
Jan 22 13:38:41 fic-gta01 user.err kernel: usb 1-2: device descriptor 
read/64, error -62
Jan 22 13:38:41 fic-gta01 user.err kernel: usb 1-2: device descriptor 
read/64, error -62
Jan 22 13:38:42 fic-gta01 user.info kernel: usb 1-2: new full speed USB 
device using s3c2410-ohci and address 5
Jan 22 13:38:42 fic-gta01 user.err kernel: usb 1-2: device not accepting 
address 5, error -62
Jan 22 13:38:42 fic-gta01 user.info kernel: usb 1-2: new full speed USB 
device using s3c2410-ohci and address 6
Jan 22 13:38:43 fic-gta01 user.err kernel: usb 1-2: device not accepting 
address 6, error -62

I also made the following tests:
-  modification of  usb-modeswitch patch with GPE9 instead of GPE5: same 
error messages
- I have also tested the following patched kernel: 
http://celtune.morb-design.com/uImage-2.6.22.5-moko11+svnr3238-r10-usb-host-neo1973.bin 
with modules-2.6.22.5-moko11+svnr3238-r10-usb-host-neo1973.tar and 
OpenMoko-openmoko-devel-image-glibc-ipk-P1-Snapshot-20080120-fic-gta01.rootfs.tar 
without any success.

Does somebody know what I missed?

Christophe





More information about the openmoko-kernel mailing list