i.MX8QM disable Cortex-A cores and power management

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i.MX8QM disable Cortex-A cores and power management

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Contributor III

Hi,

I'd like to disable Cortex-A (and/or Cortex-M) cores for the iMX8QM MEK at start up. Potentially disable the cores at run time as well. Are there any examples/explanations of this ?

Also, about the power management features available for Cortex-A we can use for the iMX8QM.

My image is not using U-boot. The image has scfw, mx8qm-ahab-container.img and bl31.bin to boot the Cortex-A test image.

Thank you.

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NXP TechSupport
NXP TechSupport

Hi rkohli2000

 

for such example one can look at  i.MX8 Android Auto releases,

in this case the M4 is the parent of the AP and M4 boots the AP via sc_pm_boot()

https://www.nxp.com/design/software/embedded-software/i-mx-software/android-os-for-i-mx-applications...

 

Best regards
igor

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