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AM335X linux cpuidle driver for C3 state

Hi,

I'm playing with the linux cpuidle power management for one of our school project.

I noticed that current cpuidle driver used in arch/arm/mach-omap2/cpuidle33XX.c only supports two states (C1 and C2).

According to this user guide, there should be another C3 state:

processors.wiki.ti.com/index.php/AM335x_Linux_Power_Management_User_Guide

Is there a version of linux driver that supports the C3 state?

Thanks,

Liangzhen