Freescale fec.c driver breakage

[broonie@opensource.wolfsonmicro.com (Mark Brown)]

On Tue, Jun 05, 2012 at 10:36:30PM +1000, Greg Ungerer wrote:

> I am pretty sure AHB was bolted on later. This FEC core has progressed
> from very old Motorola PowerPC platforms to ColdFire/M68k to ARM, over
> something coming close to a 20 year period. In the earlier uses of it
> there is quite a few differences (including some quite odd register
> layout differences).

> There may be other things that are somewhat like an ahb clock and ipg
> clock, but really these are things that have come along later with a
> specific platform implementation.

For AHB that sounds plausible, but for the IPG clock (assuming I've
identified the function correctly) I've got a very hard time believing
that the IP ever didn't need a clock - my understanding is that it's the
master clock for the IP ("IP gate").
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