[PATCH] ARM: remove ixp2000 platform
khc at pm.waw.pl
Sun Mar 11 08:31:36 EDT 2012
Greg Ungerer <gerg at snapgear.com> writes:
> The built in ethernet interfaces on the ixp4xx family are not PCI
> based. So they at least do not suffer from the BE/LE conversions
> at the eth driver.
The problematic one is IXP42x rev. A0. It has no support for hw mixed
mode (LE core + lane swapping where needed). Unfortunately this early
chip is quite popular. "Software" mixed mode means byte swapping in the
network drivers and IIRC the crypto accelerator becomes unusable (at
least without workarounds).
Later revisions (42x rev. B0 and up, and all other IXP4) can work
in the most efficient hw mixed mode. Support is not upstream but it's
basically ready. I think it may be incompatible with XIP.
More information about the linux-arm-kernel