[PATCH 2/2] arm/mx5: add device tree support for imx51 babbage

[Russell King - ARM Linux]

On Thu, Oct 13, 2011 at 06:10:10PM +0200, Julien Boibessot wrote:
> On 30/09/2011 15:35, Shawn Guo wrote:
> > It adds device tree support for imx51 babbage board.
> >
> cut
> > diff --git a/arch/arm/mach-mx5/imx51-dt.c b/arch/arm/mach-mx5/imx51-dt.c
> > new file mode 100644
> > index 0000000..0878441
> > --- /dev/null
> > +++ b/arch/arm/mach-mx5/imx51-dt.c
> > @@ -0,0 +1,116 @@
> cut
> > +
> > +static void __init imx51_timer_init(void)
> > +{
> > +	mx51_clocks_init(32768, 24000000, 22579200, 0);
> > +}
> From my understanding, if put in arch/arm/mach-mx5/imx51-dt.c, this
> clock initialization will apply to all i.MX51 based platforms.
> Am I right ?

In the general case, from the above code fragment, I'd say you are.
The timer init stuff is supposed to be for bringing up the timers.

We do have an early init callback which can be used for this - which
gets things like the clk stuff up and running from immediately after
the page tables have been setup and initial device mappings put in
place - before any drivers or even IRQ controllers have been
initialized.