Re: USB EHCI issue on OMAP3 Beagle

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Op 30 apr 2008, om 11:17 heeft Felipe Balbi het volgende geschreven:


On Wed, 30 Apr 2008 11:09:37 +0200, Koen Kooi <k.kooi@xxxxxxxxxxxxxxxxxx >
wrote:
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Op 30 apr 2008, om 10:42 heeft Syed Mohammed, Khasim het volgende
geschreven:
Hi all,

We have USB ECHI port 1 integrated with SMSC PHY (USB 3326) on
Beagle Board. I have connected a high speed Mass Storage (USB
harddisk) to the port, the enumeration happens fine and I am also
able to do a data transfer, but after some time, it fails with below
message:

ehci-omap ehci-omap.0: port 1 reset error -110
hub 2-0:1.0: hub_port_status failed (err = -32)
# ehci-omap ehci-omap.0: port 1 reset error -110
hub 2-0:1.0: hub_port_status failed (err = -32)

I'm having similar issues with usbon the beagleboard:

usb 1-1: USB disconnect, address 2
usb 1-1.3: USB disconnect, address 7
eth0: unregister 'asix' usb-ehci-omap.0-1.3, ASIX AX8817x USB 2.0
Ethernet
usb 1-1: clear tt 4 (9082) error -19
usb 1-1: clear tt 4 (9082) error -19

I tried various combinations of the usb-ethernet adaptor with and
without hub and found:

* no hub,  low cpu load + slow transfer (e.g. download over adsl):
transferring a few MiBs is OK
* hub, low cpu load + slow transfer: transferring ~ 1MiB is OK
* big cpu load (e.g. using scp): 128KiB max

I didn't dare to try a USB disk yet :)

false overcurrent indication maybe ?

try modprobe ehci_hcd ignore_oc=1

I've uploaded a kernel with your timeout patch and a modular ehci_hcd (so you need to unpack modules.tgz into your rootfs) to here:

http://amethyst.openembedded.net/~koen/beagleboard/usbtest/

I'm currently 700 km from my beagleboard, so testing is appreciated :)

regards,

Koen

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