Why is the e500v2 core not using cpuidle?

[Thomas Waldecker]

Hi,

As part of my masterthesis I was just looking around the kernel 
sources for cpuidle and figured out that the only CPU in the PowerPC 
architecture using the cpuidle framework is the pseries.

I assume the e500v2 core is using the idle modes 
in arch/powerpc/kernel/idle_e500.S

Why is there no support for the cpuidle framework?

How can I debug the e500 idle modes? 
Are there any statistics?

I already ran PowerTOP on a QorIQ P2020 but it's almost useless 
because the information is missing.

Kind regards,
Thomas Waldecker