Hold A53 in reset from M7 on i.MX8M+

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Hold A53 in reset from M7 on i.MX8M+

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aadvark
Contributor I

Hello,

 

Is it possible to hold the A53s in reset from the M7 on the i.MX8M+? From the reference manual there are some registers related to the reset of the A53 platform. I'm able to do that from the M7, but the reset is self-clearing. How would I go forward when wanting to keep the A53 in reset from the M7?

 

Our use case is having the M7 as the master in a power-constrained system. Under certain conditions we want to keep the A53s in reset and take the power with the use of the PCA9450 PMIC.

 

Thank you 

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