[PATCH v2 1/2] arm: a driver for on-chip ETM and ETB

[Linus Walleij]

2009/10/19 Alexander Shishkin <virtuoso at slind.org>:

> That said, I'm personally not overly concerned about the support for
> earlier versions of those macrocells and if you maintain that those
> are better off implemented as AMBA drivers, I've not problem doing
> that.

If people are using older versions, they can hardcode the peripheral
ID when they define the AMBA device in their board setup. This
effectively deactivates the probe for device ID:s.

So it's safe to use the AMBA PrimeCell abstraction anyway.

Linus Walleij