[PlanetCCRMA] apple thunderbolt 2 to fw800 adapter

[Juan I Reyes]

Turns out that the ThinkPad W540 has an unusual chipset or controller
for the Thunderbolt Bus, not supported in Linux (Thanks for your
research and response Adam).

But the Thunderbolt-2 to firewire 800 adapter works on other ThinkPads,
and other laptops with Thunderbolt-2. There is a thunderbolt module on
4.x Kernels.

Good news is that USB-C-Thunderbolt-3 seems to be supported on newer
laptops. Just need to be aware of granting levels of security, since
thunderbolt is an extension of pci-e. There are drivers and utilities 
for
thunderbolt-3, though not thunderbolt-2.

But, question remains: will FireWire work daisy chaining Thunderbolt
adapters from 3-to-2-to-FireWire. People have reported success on qpple
hardware.

   -- Juan


> 
> Have read that Qpple Thunderbolt-2 to firewire 800 adapter works on
> kernels like 4.17.x.x.
> 
> However, I have not been able to get it working on a ThinkPad W540
> which has a Thunderbolt-2 port.
> 
> The adapter gets recognized but it doesn't go beyond the system
> peripheral part (Thunderbolt NHI).
> 
> The adapter tested OK on windoze.
> 
> Do any additional libraries or modules need to be installed?.
> 
> Anyone using this kind of set up?.
>