[Macchiato] JTAG debugging a Macchiato

[Matt Sealey]

Hello all,

Anyone got *any* kind of JTAG debugger working with a Macchiato yet?

I was unpleasantly surprised that the EspressoBIN works out of the box, but
my McBIN seems to present me only with a single TAP with a strange (not
Marvell?) JEP106 vendor and the product ID 0x8040 - that’s no Coresight DAP
I’ve ever seen...

Is there some lockout that should not have been placed or something the PM
firmware running on the M3 could do to give us actual debug access (or
could I short a test pad, flip a switch or just forget it and use the damn
thing as a doorstop?)

Marvell are being their usual selves regarding any information and
documentation, so I’m putting it out here.

Ta,
Matt
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