On Mon, Aug 07, 2017 at 05:17:45PM +0300, Oleksandr Shamray wrote:

When a need raise up to use JTAG interface for system's devices
programming or CPU debugging, it could be done from the external
JTAG master controller.
 
For such purpose, usually the user layer
application implements jtag protocol or using a proprietary
connection to vendor hardware.
This method is slow and not generic.
 
We propose to implement general JTAG interface and infrastructure
to communicate with user layer application. 

Hi Oleksandr

You might find this discussion interesting:

https://lists.linuxfoundation.org/pipermail/ksummit-discuss/2017-August/004721.html

You are defining a new ABI here, so linux-abi should be involved in
the discussion of these patches.

    Andrew