[OpenOCD-user] Allwinner v851s how to enter debug

[Michał W. <mic...@gm...>]

Hello,

I made a custom board base on Allwinner V851s which contains embedded A7 and RiscV units.

I want to debug the A7 core with OpenOCD and J-Link.

Unfortunately, the V851s does not have a reset pin, so entering debug mode is a big question mark for me.
In target list I found a allwinner_v3s.cfg.

Quote
"
# JTAG is enabled by default after power-on on listed JTAG_* pins. So far the
# boot sequence is:
# Time		Action
# 0000ms	Power ON
# 0200ms	JTAG enabled
# 0220ms	JTAG pins switched to SD mode
"
To do power cycles EEZ H24005 was used.

Now, my question is, is it possible to somehow configure the srst pin to make a power cycle? 
Maybe there is some other way to enter debug mode.
Please share with me how to enter into debug mode for this unit.

Thanks
BR
Michal