Thread (51 messages) 51 messages, 8 authors, 2012-03-19

[PATCH v5 3/4] clk: introduce the common clock framework

From: Shawn Guo <hidden>
Date: 2012-03-19 07:41:32
Also in: lkml

On Fri, Mar 16, 2012 at 08:23:57PM -0700, Saravana Kannan wrote:
On 03/07/2012 01:20 PM, Turquette, Mike wrote:
...
quoted
Admittedly I think that the OMAP code could migrate some of these bits
to a lazy-registration model, specifically the hwmod object instances,
but that requires an awful lot of refactoring for a fairly large stack
of platform code.  This might be something to achieve in the future
but for now we *need* initialisation to be fully static.
When we work on moving clocks to device tree, wouldn't you face the
same problem? You will have to dynamically create most of the clocks
in that case too.

From what I heard from Mike[1], Omap will not have most of the clocks
encoded in device tree. 

Although my original preference was to have all the clocks represented
in device tree and dynamically registered to clk framework, I've heard
people including Grant incline to only have oscillator and leaf modules
clocks in device tree.  I somehow agree with that now, because having
all the clocks in there will bloat device tree dramatically, considering
there will be 3 clks, clk_gate, clk_divider and clk_mux backing one
clock in general.

Assuming we would agree to have most SoC internal clocks registered
from clock driver rather than device tree, I would like to hear about
how we should have these clock registered from clock driver, static
initialization or using register function?

-- 
Regards,
Shawn

[1] http://article.gmane.org/gmane.linux.linaro.devel/10554
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