USB errors, ehci testing modes

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Hi

I have some stange errors on a arm pcm043 with internal usb phy. The log is 
attached at the end of the mail. It would be nice if someone could give me a 
pointer whats going wrong?. It would also be nice to know where the status 
flags which are output by the usb debug messages are documented?

As it might be a hw problem i would like to activate the testmodes of the ehci 
controller. The old Freescale BSP driver had a file in debugfs where enabling 
this stuff was easy. Is there also an easy way to enable the ehci debug 
facility from linux usermode? 

Thanks
Tim

The very seldom error i have seen:
usb-storage: Bulk data transfer result 0x0
usb-storage: Attempting to get CSW...
usb-storage: usb_stor_bulk_transfer_buf: xfer 13 bytes
usb-storage: Status code 0; transferred 13/13
usb-storage: -- transfer complete
usb-storage: Bulk status result = 0
usb-storage: Bulk Status S 0x53425355 T 0x148af R 0 Stat 0x0
usb-storage: scsi cmd done, result=0x0
usb-storage: *** thread sleeping.
hub 1-0:1.0: state 7 ports 1 chg 0000 evt 0002
mxc-ehci mxc-ehci.0: GetStatus port:1 status c00100a 6  ACK POWER sig=se0 PEC 
CSC
hub 1-0:1.0: port 1, status 0100, change 0003, 12 Mb/s
usb 1-1: USB disconnect, device number 23
usb 1-1: unregistering device
usb 1-1: unregistering interface 1-1:1.0
usb-storage: storage_disconnect() called
usb-storage: -- usb_stor_release_resources
usb-storage: -- sending exit command to thread
usb-storage: *** thread awakened.
usb-storage: -- exiting
usb-storage: -- dissociate_dev
usb 1-1: usb_disable_device nuking all URBs
mxc-ehci mxc-ehci.0: GetStatus port:1 status 001803 0  ACK POWER sig=j CSC 
CONNECT
hub 1-0:1.0: debounce: port 1: total 100ms stable 100ms status 0x101
mxc-ehci mxc-ehci.0: port 1 high speed
mxc-ehci mxc-ehci.0: GetStatus port:1 status 8001205 4  ACK POWER sig=se0 LPM 
PE CONNECT
usb 1-1: new high-speed USB device number 24 using mxc-ehci
mxc-ehci mxc-ehci.0: detected XactErr len 0/8 retry 1
mxc-ehci mxc-ehci.0: detected XactErr len 0/8 retry 2
mxc-ehci mxc-ehci.0: detected XactErr len 0/8 retry 3
mxc-ehci mxc-ehci.0: detected XactErr len 0/8 retry 4
mxc-ehci mxc-ehci.0: detected XactErr len 0/8 retry 5
mxc-ehci mxc-ehci.0: detected XactErr len 0/8 retry 6
mxc-ehci mxc-ehci.0: detected XactErr len 0/8 retry 7
mxc-ehci mxc-ehci.0: detected XactErr len 0/8 retry 8
mxc-ehci mxc-ehci.0: detected XactErr len 0/8 retry 9
mxc-ehci mxc-ehci.0: detected XactErr len 0/8 retry 10
mxc-ehci mxc-ehci.0: detected XactErr len 0/8 retry 11
mxc-ehci mxc-ehci.0: detected XactErr len 0/8 retry 12
mxc-ehci mxc-ehci.0: detected XactErr len 0/8 retry 13
mxc-ehci mxc-ehci.0: detected XactErr len 0/8 retry 14
mxc-ehci mxc-ehci.0: detected XactErr len 0/8 retry 15
mxc-ehci mxc-ehci.0: detected XactErr len 0/8 retry 16
mxc-ehci mxc-ehci.0: detected XactErr len 0/8 retry 17
mxc-ehci mxc-ehci.0: detected XactErr len 0/8 retry 18
mxc-ehci mxc-ehci.0: detected XactErr len 0/8 retry 19
mxc-ehci mxc-ehci.0: detected XactErr len 0/8 retry 20
mxc-ehci mxc-ehci.0: detected XactErr len 0/8 retry 21
mxc-ehci mxc-ehci.0: detected XactErr len 0/8 retry 22
mxc-ehci mxc-ehci.0: detected XactErr len 0/8 retry 23
mxc-ehci mxc-ehci.0: detected XactErr len 0/8 retry 24
mxc-ehci mxc-ehci.0: detected XactErr len 0/8 retry 25
mxc-ehci mxc-ehci.0: detected XactErr len 0/8 retry 26
mxc-ehci mxc-ehci.0: detected XactErr len 0/8 retry 27
mxc-ehci mxc-ehci.0: detected XactErr len 0/8 retry 28
mxc-ehci mxc-ehci.0: detected XactErr len 0/8 retry 29
mxc-ehci mxc-ehci.0: detected XactErr len 0/8 retry 30
mxc-ehci mxc-ehci.0: detected XactErr len 0/8 retry 31
mxc-ehci mxc-ehci.0: devpath 1 ep0in 3strikes
mxc-ehci mxc-ehci.0: detected XactErr len 0/8 retry 1
mxc-ehci mxc-ehci.0: detected XactErr len 0/8 retry 2
mxc-ehci mxc-ehci.0: detected XactErr len 0/8 retry 3
mxc-ehci mxc-ehci.0: detected XactErr len 0/8 retry 4
mxc-ehci mxc-ehci.0: detected XactErr len 0/8 retry 5
mxc-ehci mxc-ehci.0: detected XactErr len 0/8 retry 6
mxc-ehci mxc-ehci.0: detected XactErr len 0/8 retry 7
mxc-ehci mxc-ehci.0: detected XactErr len 0/8 retry 8
mxc-ehci mxc-ehci.0: detected XactErr len 0/8 retry 9
mxc-ehci mxc-ehci.0: detected XactErr len 0/8 retry 10
mxc-ehci mxc-ehci.0: detected XactErr len 0/8 retry 11
mxc-ehci mxc-ehci.0: detected XactErr len 0/8 retry 12
mxc-ehci mxc-ehci.0: detected XactErr len 0/8 retry 13
mxc-ehci mxc-ehci.0: detected XactErr len 0/8 retry 14
mxc-ehci mxc-ehci.0: detected XactErr len 0/8 retry 15
mxc-ehci mxc-ehci.0: detected XactErr len 0/8 retry 16
mxc-ehci mxc-ehci.0: detected XactErr len 0/8 retry 17
mxc-ehci mxc-ehci.0: detected XactErr len 0/8 retry 18
mxc-ehci mxc-ehci.0: detected XactErr len 0/8 retry 19
mxc-ehci mxc-ehci.0: detected XactErr len 0/8 retry 20
mxc-ehci mxc-ehci.0: detected XactErr len 0/8 retry 21
mxc-ehci mxc-ehci.0: detected XactErr len 0/8 retry 22
mxc-ehci mxc-ehci.0: detected XactErr len 0/8 retry 23
mxc-ehci mxc-ehci.0: detected XactErr len 0/8 retry 24
mxc-ehci mxc-ehci.0: detected XactErr len 0/8 retry 25
mxc-ehci mxc-ehci.0: detected XactErr len 0/8 retry 26
mxc-ehci mxc-ehci.0: detected XactErr len 0/8 retry 27
mxc-ehci mxc-ehci.0: detected XactErr len 0/8 retry 28
mxc-ehci mxc-ehci.0: detected XactErr len 0/8 retry 29
mxc-ehci mxc-ehci.0: detected XactErr len 0/8 retry 30
mxc-ehci mxc-ehci.0: detected XactErr len 0/8 retry 31
mxc-ehci mxc-ehci.0: devpath 1 ep0in 3strikes
mxc-ehci mxc-ehci.0: detected XactErr len 0/8 retry 1
mxc-ehci mxc-ehci.0: detected XactErr len 0/8 retry 2
mxc-ehci mxc-ehci.0: detected XactErr len 0/8 retry 3
mxc-ehci mxc-ehci.0: detected XactErr len 0/8 retry 4
mxc-ehci mxc-ehci.0: detected XactErr len 0/8 retry 5
mxc-ehci mxc-ehci.0: detected XactErr len 0/8 retry 6
mxc-ehci mxc-ehci.0: detected XactErr len 0/8 retry 7
mxc-ehci mxc-ehci.0: detected XactErr len 0/8 retry 8
mxc-ehci mxc-ehci.0: detected XactErr len 0/8 retry 9
mxc-ehci mxc-ehci.0: detected XactErr len 0/8 retry 10
mxc-ehci mxc-ehci.0: detected XactErr len 0/8 retry 11
mxc-ehci mxc-ehci.0: detected XactErr len 0/8 retry 12
mxc-ehci mxc-ehci.0: detected XactErr len 0/8 retry 13
mxc-ehci mxc-ehci.0: detected XactErr len 0/8 retry 14
mxc-ehci mxc-ehci.0: detected XactErr len 0/8 retry 15
mxc-ehci mxc-ehci.0: detected XactErr len 0/8 retry 16
mxc-ehci mxc-ehci.0: detected XactErr len 0/8 retry 17
mxc-ehci mxc-ehci.0: detected XactErr len 0/8 retry 18
mxc-ehci mxc-ehci.0: detected XactErr len 0/8 retry 19
mxc-ehci mxc-ehci.0: detected XactErr len 0/8 retry 20
mxc-ehci mxc-ehci.0: detected XactErr len 0/8 retry 21
mxc-ehci mxc-ehci.0: detected XactErr len 0/8 retry 22
mxc-ehci mxc-ehci.0: detected XactErr len 0/8 retry 23
mxc-ehci mxc-ehci.0: detected XactErr len 0/8 retry 24
mxc-ehci mxc-ehci.0: detected XactErr len 0/8 retry 25
mxc-ehci mxc-ehci.0: detected XactErr len 0/8 retry 26
mxc-ehci mxc-ehci.0: detected XactErr len 0/8 retry 27
mxc-ehci mxc-ehci.0: detected XactErr len 0/8 retry 28
mxc-ehci mxc-ehci.0: detected XactErr len 0/8 retry 29
mxc-ehci mxc-ehci.0: detected XactErr len 0/8 retry 30
mxc-ehci mxc-ehci.0: detected XactErr len 0/8 retry 31
mxc-ehci mxc-ehci.0: devpath 1 ep0in 3strikes
mxc-ehci mxc-ehci.0: GetStatus port:1 status c00100a 6  ACK POWER sig=se0 PEC 
CSC
hub 1-0:1.0: unable to enumerate USB device on port 1
hub 1-0:1.0: state 7 ports 1 chg 0000 evt 0002
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