> > I've been doing my recent work with a P2040 and prior to that I did test 
> > out the recovery on a T2081 (which isn't documented to have this 
> > erratum) when I was re-working the driver. The "new" recovery actually 
> > seems better but I don't have a reliably faulty i2c device so that's 
> > only based on me writing some code to manually trigger the recovery 
> > (using the snippet below) and observing it with an oscilloscope.
> 
> You don't need a faulty device, just an aborted I2C read/write op.

If you can wire GPIOs to the bus, you can use the I2C fault injector:

	Documentation/i2c/gpio-fault-injection.rst

There are already two "incomplete transfer" injectors.