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tcl/target/stm32f4: ramp up JTAG speed, HSI is 16MHz there 

Since all F4 parts have an internal HSI providing 16MHz, it's safe to
use 2MHz JTAG frequency by default.

Change-Id: I2702d5a1d642d4acd4af2db54c028949132c6900
Signed-off-by: Uwe Bonnes <bon@elektron.ikp.physik.tu-darmstadt.de>
Signed-off-by: Paul Fertser <fercerpav@gmail.com>
Reviewed-on: http://openocd.zylin.com/2383
Tested-by: jenkins
Reviewed-by: Spencer Oliver <spen@spen-soft.co.uk>
This commit is contained in:
Uwe Bonnes 2014-11-18 17:30:44 +03:00 committed by Spencer Oliver
parent 41a968ec05
commit 9c4d294654
1 changed files with 2 additions and 2 deletions
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4
tcl/target/stm32f4x.cfg
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@ -73,13 +73,13 @@ $_TARGETNAME configure -work-area-phys 0x20000000 -work-area-size $_WORKAREASIZE
set _FLASHNAME $_CHIPNAME.flash
flash bank $_FLASHNAME stm32f2x 0 0 0 0 $_TARGETNAME
# JTAG speed should be <= F_CPU/6. F_CPU after reset is 8MHz, so use F_JTAG = 1MHz
# JTAG speed should be <= F_CPU/6. F_CPU after reset is 16MHz, so use F_JTAG = 2MHz
#
# 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 1000
adapter_khz 2000
adapter_nsrst_delay 100
if {[using_jtag]} {