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IMX6 powermanagement in linux

Question asked by anoop mm on Dec 24, 2014
Latest reply on Dec 24, 2014 by igorpadykov



We are doing power management in Linux(L3.0.35_4.1.0_130816_source) for imx6 board.

As part of power management, we want to power off arm core or gate off arm core during suspend.

But we cannot find the code portion to do this in Linux source. Is this feature is implemented in Linux code?

In one portion (mxc_cpu_lp_set function)  ARM_POWER_OFF case, we can see the code to power off the arm core.

But I am not seeing arm power down request bit similar to VPU/GPU(gpu_vpu_pdn_req) to switch off the arm core in imx6.

Can you please help to identify the arm power down request bit?