[U-Boot] Enabling L2 cache on mx53

[Marek Vasut]

Dear Fabio Estevam,

> Hi Dirk,
> 
> On Mon, Aug 19, 2013 at 12:16 PM, Dirk Behme <dirk.behme at gmail.com> wrote:
> > Is the mx53 L2 cache the same like on mx6?
> 
> I think they are different.
> 
> On mx6 the L2 cache controller is memory mapped ,but on mx53 there is
> no L2 cache entry in its memory map.
> 
> Regards,
> 
> Fabio Estevam

L2CC on MX53 is enabled by setting just the L2ON and C bits in CP15, there's no 
configuration. Not even Linux enables the L2CC on MX53, so if it's not on in U-
Boot, then it's not on at all (and that sucks).

Best regards,
Marek Vasut