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at91sam3XXX.cfg: Configure JTAG clock to 500 kHz. 

This affects all configurations including target/at91sam3XXX.cfg

Change-Id: I2c1e1edf0986d30e63f109604a38bf402ded369e
Signed-off-by: Ulf Samuelsson <ulf@emagii.com>
Reviewed-on: http://openocd.zylin.com/292
Tested-by: jenkins
Reviewed-by: Spencer Oliver <spen@spen-soft.co.uk>
This commit is contained in:
Ulf Samuelsson 2011-12-20 19:09:26 +01:00 committed by Spencer Oliver
parent 77accb2f3d
commit c6f44bde73
1 changed files with 12 additions and 0 deletions
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12
tcl/target/at91sam3XXX.cfg
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@ -29,6 +29,18 @@ if { [info exists ENDIAN] } {
set _ENDIAN little
}
# JTAG speed should be <= F_CPU/6. F_CPU after reset is 4 MHz, so use F_JTAG = 0.5MHz
#
# Since we may be running of an RC oscilator, we crank down the speed a
# bit more to be on the safe side. Perhaps superstition, but if are
# running off a crystal, we can run closer to the limit. Note
# that there can be a pretty wide band where things are more or less stable.
adapter_khz 500
adapter_nsrst_delay 100
jtag_ntrst_delay 100
#jtag scan chain
if { [info exists CPUTAPID] } {
set _CPUTAPID $CPUTAPID