[PATCH 7/7] ARM: tegra30: cpuidle: add LP2 driver for CPU0

[Peter De Schrijver]

> > Even though we have plan to use coupled cpuidle, I still prefer to go
> > with the LP2 driver first. Then adding one more patch to support coupled
> > cpuidle based on LP2 driver. This is good for history. And if there is
> > any issue, it's more easy to roll back to the stable one.
> 
> I don't think that implementing it one way and then changing to a
> different way will benefit history at all. It'll make the history more
> complicated. What exactly is the problem with just using coupled cpuidle
> from the start? If we did merge this implementation now, then switch to
> coupled cpuidle later, when do you think the switch would happen?
> 

Before we consider doing this, I think we should have some idea on how
frequently we run into the situation where CPU0 is idle but a secondary
core is not. Depending on that we can then decide how useful coupled cpuidle
would be for us.

Cheers,

Peter.