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Linux/AM5718: Kernel and PMIC shutdown

Part Number: AM5718

Tool/software: Linux

Hi,

In my design  I power up AM5718 using PMIC, TPS6590379.

I was trying to experiment with Shutdown using DEV_ON bit in TPS6590379. On setting high for DEV_ON , PMIC executes power down sequence.

This happen without any delay.

From linux application if we call to set DEV_ON,  device shutdown will happen even before we try to execute the power down release of Linux kernel.

How is self shut down implemented in Linux environment.?? Is there any example available for AM57xx series (I guess AM5728GP evm will have this feature) for shutdown from Linux environment

Does it not need sufficient time to release Kernel elements before turning OFF power??