[PATCH v2] clk: respect the clock dependencies in of_clk_init

[ezequiel.garcia@free-electrons.com (Ezequiel Garcia)]

Tomasz, Mike:

On Sun, Feb 23, 2014 at 01:20:40PM -0800, Mike Turquette wrote:
> Quoting Tomasz Figa (2014-02-23 10:46:35)
> > On 10.02.2014 18:42, Gregory CLEMENT wrote:
> > > Until now the clock providers were initialized in the order found in
> > > the device tree. This led to have the dependencies between the clocks
> > > not respected: children clocks could be initialized before their
> > > parent clocks.
> > >
> > > Instead of forcing each platform to manage its own initialization order,
> > > this patch adds this work inside the framework itself.
> > >
> > > Using the data of the device tree the of_clk_init function now delayed
> > > the initialization of a clock provider if its parent provider was not
> > > ready yet.
> > 
> > In general this is really great. It's a first step towards sorting out 
> > dependencies between clock providers correctly. I have some comments 
> > inline, though.
> 
> Just to add in here, I think the approach is good but agree with Tomasz'
> review comments.
> 

I'm wondering if any of you has followed the discussion that Greg,
Emilio and I had about the need of this change.

If so, can you point out *why* we need to sort out registration
dependency?
-- 
Ezequiel Garc?a, Free Electrons
Embedded Linux, Kernel and Android Engineering
http://free-electrons.com