Sharing SWD lines between nRF52 and nRF91

[Smart.Enrg]

Hi,

I have nRF52833 and nRF9160 on my custom board. Due to limited space available, trying to use a common SWD interface between the two SoCs.
As follows: 
1) SWDIO and SWDCK from each SoC connected together and out to debug/ programming header; 
2) Reset from each SoC brought out to debug/ programming header as dedicated signal trace each; 
3) Idea is when say nRF52 is being programmed/ debugged, reset for nRF91 will be held low; and vice-versa.

Would this arrangement work, without any interference?

Please advise. Thanks.

[ketiljo]

This is not recommended and all sorts of problem may happen. Given that you can share VDD and GND, you need 6 pins for the two devices with separate SWD lines, and 6 pins with shared SWD and a reset line for each. So you don't save any pins this way. 

Reset is not needed for the debugger/programmer.