[PATCH V4 0/5] ARM: tegra20: cpuidle: add power-down state

[Stephen Warren]

On 01/16/2013 01:10 AM, Joseph Lo wrote:
> This adds a "powered-down" state in cpuidle for Tegra20. It requires power
> gating both CPU cores. When the CPU1 requests to enter "powered-down"
> state, it saves its own state and then enters WFI. When the CPU0 requests
> the same state, it attempts to put the CPU1 into reset to prevent it from
> waking up. Then power down both CPUs together and turn off the CPU rail.
> 
> If the CPU1 be woken up before CPU0 entering powered-down state, then it
> needs to restore it's CPU state and waits for next chance.

I have applied this series to Tegra's for-3.9/soc branch.