I am not getting the error after doing the following,

1) While enabling USB Support->USB Gadget Support ->Support for USB Gadgets, select the option with <M> (as a module), not with <*>

2) Then in System Type->Freescale MXC Implementations->MX3 options, enable ISP1540 transceiver support. (This step is optional)

We have tried and made changes as per the required and as mentioned in IMX31ADS USB Document , but we are seeing that when the OTG port is connected to a linux host pc, we are getting the following error

[114925.671295] usb 1-6: USB disconnect, address 78
[114948.396175] usb 1-6: new high speed USB device using ehci_hcd and address 79
[114948.453613] ehci_hcd 0000:00:1d.7: port 6 reset error -110
[114948.453626] hub 1-0:1.0: hub_port_status failed (err = -32)
[114949.267025] hub 1-0:1.0: Cannot enable port 6. Maybe the USB cable is bad?
[114949.570403] usb 1-6: new high speed USB device using ehci_hcd and address 81
[114949.627847] ehci_hcd 0000:00:1d.7: port 6 reset error -110
[114949.627863] hub 1-0:1.0: hub_port_status failed (err = -32)
[114950.441412] hub 1-0:1.0: Cannot enable port 6. Maybe the USB cable is bad?
[114950.744629] usb 1-6: new high speed USB device using ehci_hcd and address 83
[114950.802068] ehci_hcd 0000:00:1d.7: port 6 reset error -110
[114950.802079] hub 1-0:1.0: hub_port_status failed (err = -32)

The following configurations has been done for making the OTG work

1. For support of the OTG port in host mode, enable:
Device Drivers -> USB Support -> EHCI HCD (USB 2.0) support -> Support for
ARC controller -> Support for OTG HS Host port on ARC controller

2. Gadget configuration
Device Drivers -> USB Support -> Gadget Support -> Support for USB Gadgets
Device Drivers -> USB Support -> Gadget Support -> USB Peripheral Controller -
> ARC USB Device Controller
Device Drivers -> USB Support -> Gadget Support ->Select OTG transceiver: High
Speed
(Only the high speed transceiver is supported)

3 USB networking support.
Enable:
Device Drivers -> USB Support -> USB Gadget Support -> USB Gadget Drivers ->
Ethernet Gadget (with CDC Ethernet support),
and select RNDIS support

After compiling the Gadget modules as kernel modules and after running modprobe g_ether in shell we are getting the following log

mx31# modprobe g_ether
[ 54.430000] ARC USBOTG Device Controller driver version 1 August 2005 init

[ 52.440000] [arcotg_udc_probe] pdev=0xc0349448 config=0xc03495dc

[ 52.450000] [board_init] dev=0xc0349450 config=0xc03495dc

[ 52.460000] [struct_udc_setup] kmalloc(ucd)=0xc0024000

[ 52.460000] [struct_udc_setup] udc->ep_qh=0xc69cb000 ep_qh_base=0xc69cb000

[ 52.470000] [arcotg_alloc_request] req=0xc05270c0 set req.dma=0xffffffff

[ 52.480000] [struct_udc_setup] status_req=0xc05270c0 status_req->req.buf=0xc06ffb80 status_req->req.dma=0x806ffb80

[ 52.490000] [arcotg_udc_probe] udc_controller=0xc0024000

[ 52.500000] [arcotg_udc_probe] otg_get_transceiver returns 0xc0651200

[ 52.500000] [arcotg_udc_probe] start=0x43f88000 end=0x43f881ff

[ 52.500000]

[ 52.510000] [arcotg_udc_probe] rsrc_start=0x43f88000 rsrc_len=0x200


After this we tested ifconfig usb0 and ping commands and are working fine

Now when we connect the USB Mini A-B cable to Host Linux PC, we are getting the error

If any body has solved this please help.

Posted By vasanthk@yahoo.com on 11 Dec 2007 3:44 AM
I am not getting the error after doing the following,

1) While enabling USB Support->USB Gadget Support ->Support for USB Gadgets, select the option with <M> (as a module), not with <*>

2) Then in System Type->Freescale MXC Implementations->MX3 options, enable ISP1540 transceiver support. (This step is optional)

Is your USB Host working? lets say for example.. like mass storage host?

Yes infact we have USB HOST working and we have tested with USB Mass storage and we have booted the filesystem from USB Pen drive and also we have tested usb devices like USB KBD/MOUSE , USB Camera , etc successfully in Linux 2.6.19-2 on Daniel's Patch

We have not tested MMC and COMPACT FLASH only

We have tested USB HOST , SOUND (only play back) and USB OTG in IMX31 only(host pc conenction not working )

If required we will send the patch for your tests , so that OTG can also be solved

Posted By DrOctavius on 11 Dec 2007 9:12 PM
Is your USB Host working? lets say for example.. like mass storage host?

Vasanthk,

Could you send me the patch? I would like to solve the OTG.
lngentili@hotmail.com

Hai,

I am trying USB OTG in linux-2.6.19.2 kernel, after booting as per the manual i am testing gadget, after "modprobe g_file_storage file=/dev/ram0" command i am connecting usb otg cable to host machine but i am getting the error
as shown "device descriptor read/64, error -110".

what may be the problem?

or pls. let me know how to test the usb otg

thanks.


*********************************************************

Mounting filesystems
Starting syslogd and klogd
Running sysctl
Setting up networking on loopback device:
Setting up networking on eth0:
Adding static route for default gateway to 192.168.50.1:
route: SIOC[ADD|DEL]RT: File exists
Setting nameserver to 192.168.50.1 in /etc/resolv.conf:
Setting time from ntp server: north-america.pool.ntp.org
Starting inetd:
Starting the dropbear ssh server:
mx31# lsusb
Bus 002 Device 001: ID 0000:0000
Bus 001 Device 001: ID 0000:0000
mx31# lsmod
Module Size Used by
isp1504_arc 13216 0
mx31# modprobe g_file_storage file=/dev/ram0
[ 54.530000] ARC USBOTG Device Controller driver version 1 August 2005 init

[ 54.540000] ARC USBOTG h/w ID=0x5 revision=0x40

[ 54.570000] g_file_storage gadget: File-backed Storage Gadget, version: 28 November 2005

[ 54.580000] g_file_storage gadget: Number of LUNs=1

[ 54.580000] g_file_storage gadget-lun0: ro=0, file: /dev/ram/0

[ 54.590000] arcotg_udc: gadget arc_udc bound to driver g_file_storage

mx31# [ 54.990000] usb 1-1: new high speed USB device using fsl-ehci and address 2

[ 51.110000] usb 1-1: device descriptor read/64, error -110