[U-Boot-Users] MPC8280 USB console
Hi; I am trying to bring up the USB controller on PQ2FADS-ZU with MPC8280 onboard. I have finished with the initialization and transaction routines but not the ones neccessary for usbtty to work. The u-boot-1.1.2 source tree that I am using is a release version that is definitely not from the top of the CVS. I notice that the usbtty is only implemented for the SX1 board in drivers/usbdcore_omap1510.c. Is omap1550 the name of the usb controller in arm925t core of the card? Some questions pertaining to USB requirements for usbtty to work. Sorry if this is more of usb-related rather than u-boot related. (1) The USB connector on PQ2FADS-ZU is a Type-A connector. Would this work as a console port? (2) What type of usb connections is neccessary for usbtty to work? I mean, is host PC running usb-host or usb-function and PQ2FADS-ZU running usb-host or usb-function? (3) What type of cable should I use? I assume a Type-A-to-Type-A PC-to-PC USB cable would work? How about a USB2.0 Link cable? www.usbcable.com
Thanks for any input.
Regards, TEH
In message OF148161B0.215740C5-ON4825705B.001BEE4A@uk.marconicomms.com you wrote:
I am trying to bring up the USB controller on PQ2FADS-ZU with MPC8280onboard. I have finished with the initialization and transaction routines but not the ones neccessary for usbtty to work. The u-boot-1.1.2 source
Don't use such old code. Please use a current version from CVS, for example CVS tag LABEL_2005_08_12_0050
tree that I am using is a release version that is definitely not from the top of the CVS. I notice that the usbtty is only implemented for the SX1
This will become a major problem if you should ever have any problems or questions.
(1) The USB connector on PQ2FADS-ZU is a Type-A connector. Would this work as a console port?
Can it operate in device mode?
(2) What type of usb connections is neccessary for usbtty to work? I mean, is host PC running usb-host or usb-function and PQ2FADS-ZU running usb-host or usb-function?
The PC is a standard USB host, and U-Boot will register itself as a serial device.
(3) What type of cable should I use? I assume a Type-A-to-Type-A PC-to-PC
You better check what your hardware allows. Using a A-to-A cable with hartdware that is not compatible may ruin both your target board and the PC.
Best regards,
Wolfgang Denk
Wolfgang Denk wrote:
In message OF148161B0.215740C5-ON4825705B.001BEE4A@uk.marconicomms.com you wrote:
I am trying to bring up the USB controller on PQ2FADS-ZU with MPC8280onboard. I have finished with the initialization and transaction routines but not the ones neccessary for usbtty to work. The u-boot-1.1.2 source
[snip]
(3) What type of cable should I use? I assume a Type-A-to-Type-A PC-to-PC
You better check what your hardware allows. Using a A-to-A cable with hartdware that is not compatible may ruin both your target board and the PC.
Best regards,
Wolfgang Denk
IIRC, the PQ2FADS board has an errata on using USB in slave mode: the circuitry does not disconnect the +5v power properly when in slave mode (sneak path through the MOSFET intrinsic diode?) and so the PQ2FADS board (as slave) could fight with the host (as master). CHECK THIS BEFORE CONNECTING IT UP.
gvb
participants (3)
-
Jerry Van Baren -
KokHow Teh -
Wolfgang Denk