Antonio Borneo wrote:
On Thu, Mar 25, 2010 at 9:31 PM, Laurent Gauch
<[email protected]> wrote:
T H E S O L U T I O N -----------------------------------
The solution is to add the absolute max frequency for a given device when we
create a "jtag newtap" as
jtag newtap $_CHIPNAME cpu .-freqmax_khz 10000 -irlen 7 -ircapture 0x1
-irmask 0x7f -expected-id $_CPUTAPID -expected-id $_CPUTAPID2
Laurent,
just my 2 cents contribution....
Give a look at tcl/interface/parport.cfg
This interface has one default parameter for parallel port address.
The default value can be modified, e.g., in the user configuration
script, without any need to change the interface script.
Can similar arrangement work for you too?
Best Regards
Antonio Borneo
Hi Antonio,
Thank you for trying to provide a solution ;-)
Yes, it could be a workaround. But not a final solution.
The JTAG frequency of the chain is not depending on the capability of
the JTAG Dongle but is depending on the chain itself :
- the target or the daisy chained targets
- the boards layout
- length and termination of the JTAG cable
The first dependence is coming from the targets. If we implement the
-freqmax in the 'jtag newtap' we can make sure to run JTAG lower than
the lowest JTAG frequency of any TAP and at any time.
Regards,
Laurent Gauch
http://www.amontec.com
_______________________________________________
Openocd-development mailing list
[email protected]
https://lists.berlios.de/mailman/listinfo/openocd-development
