leo@leo-fedora:/home/staff/leo/pi3/asarhan/openocd-armv8% ./src/openocd -f tcl/interface/ftdi/olimex-arm-usb-ocd.cfg  -f tcl/target/rpi3.cfg
Open On-Chip Debugger 0.9.0-dev-gb796a58 (2017-07-07-11:47)
Licensed under GNU GPL v2
For bug reports, read
	http://openocd.sourceforge.net/doc/doxygen/bugs.html
trst_and_srst separate srst_gates_jtag trst_push_pull srst_open_drain connect_deassert_srst
adapter speed: 1000 kHz
jtag_ntrst_delay: 500
Info : clock speed 1000 kHz
Error: JTAG scan chain interrogation failed: all ones
Error: Check JTAG interface, timings, target power, etc.
Error: Trying to use configured scan chain anyway...
Error: rpi3.dap: IR capture error; saw 0x0f not 0x01
Warn : Bypassing JTAG setup events due to errors
Warn : Invalid ACK 0x7 in JTAG-DP transaction