root@localhost:~# openocd -f interface/jlink.cfg -f target/imx6.cfg
Open On-Chip Debugger 0.10.0+dev-00548-g06589d2d (2018-10-15-22:06)
Licensed under GNU GPL v2
For bug reports, read
	http://openocd.org/doc/doxygen/bugs.html
Info : auto-selecting first available session transport "jtag". To override use 'transport select <transport>'.
Warn : imx6.sdma: nonstandard IR value
adapter speed: 1000 kHz
Info : Listening on port 6666 for tcl connections
Info : Listening on port 4444 for telnet connections
Info : J-Link ARM V8 compiled Nov 14 2012 22:34:52
Info : Hardware version: 8.00
Info : VTarget = 3.293 V
Info : clock speed 1000 kHz
Info : JTAG tap: imx6.cpu tap/device found: 0x4ba00477 (mfg: 0x23b (ARM Ltd.), part: 0xba00, ver: 0x4)
Info : TAP imx6.sdma does not have IDCODE
Info : JTAG tap: imx6.sjc tap/device found: 0x2191c01d (mfg: 0x00e (Freescale (Motorola)), part: 0x191c, ver: 0x2)
Info : imx6.cpu.0: hardware has 6 breakpoints, 4 watchpoints
Info : Listening on port 3333 for gdb connections
Info : accepting 'gdb' connection on tcp/3333
Error: attempted 'gdb' connection rejected
Info : accepting 'telnet' connection on tcp/4444
adapter speed: 1000 kHz
Info : JTAG tap: imx6.cpu tap/device found: 0x4ba00477 (mfg: 0x23b (ARM Ltd.), part: 0xba00, ver: 0x4)
Info : TAP imx6.sdma does not have IDCODE
Info : JTAG tap: imx6.sjc tap/device found: 0x2191c01d (mfg: 0x00e (Freescale (Motorola)), part: 0x191c, ver: 0x2)
Error: imx6.cpu.0: how to reset?
in procedure 'reset'
in procedure 'ocd_bouncer'


Error: unknown reset_config flag (seperate)
reset_config [none|trst_only|srst_only|trst_and_srst]
          [srst_pulls_trst|trst_pulls_srst|combined|separate]
          [srst_gates_jtag|srst_nogate] [trst_push_pull|trst_open_drain]
          [srst_push_pull|srst_open_drain]
          [connect_deassert_srst|connect_assert_srst]

trst_and_srst separate srst_gates_jtag trst_push_pull srst_open_drain connect_deassert_srst
adapter speed: 1000 kHz
Error: JTAG scan chain interrogation failed: all zeroes
Error: Check JTAG interface, timings, target power, etc.
Error: Trying to use configured scan chain anyway...
Error: imx6.cpu: IR capture error; saw 0x00 not 0x01
Warn : Bypassing JTAG setup events due to errors
Error: Invalid ACK (0) in DAP response
Error: Invalid ACK (0) in DAP response
Error: Invalid ACK (7) in DAP response
Error: Debug regions are unpowered, an unexpected reset might have happened
Error: JTAG-DP STICKY ERROR
Error: Could not find APB-AP for debug access