From 9c4d2946548f72d77f103b978ab30501d5953f04 Mon Sep 17 00:00:00 2001 From: Uwe Bonnes Date: Tue, 18 Nov 2014 17:30:44 +0300 Subject: [PATCH 1/1] 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 Signed-off-by: Paul Fertser Reviewed-on: http://openocd.zylin.com/2383 Tested-by: jenkins Reviewed-by: Spencer Oliver --- tcl/target/stm32f4x.cfg | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/tcl/target/stm32f4x.cfg b/tcl/target/stm32f4x.cfg index ecd39de77c..a7ec5eab3e 100644 --- a/tcl/target/stm32f4x.cfg +++ b/tcl/target/stm32f4x.cfg @@ -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]} { -- 2.30.2