Re: [PATCH] ARM: dts: msm8974: Move arch-timer out of soc node

From: Christopher Covington
Date: Mon Mar 17 2014 - 13:31:36 EST

Hi Stephen,

On 03/11/2014 05:24 PM, Stephen Boyd wrote:
> The architected timer is not a register addressable piece of
> hardware. Instead it's accessed through cp15 accessors. Move it
> to the root of the devicetree to reflect this.

I find this confusing, perhaps due to overloading of the word "register".
Aren't CP15's a class of coprocessor _registers_? Could it perhaps be clearer
to talk about memory-mapped versus CP15-mapped timers?

Is "soc" documented somewhere or is it just a name for a container? Assuming
the latter, it's not obvious to me why being a child of a system on chip node
would imply having memory mapped registers.


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