i.MX 8M Low Power Design By M Core Running In System Suspend Application Note

2022-05-13
●Introduction
■The i.MX 8M family of applications processors, based on Arm® Cortex®-A53, and Cortex-M cores, provide industry-leading audio, voice, and video processing for applications that scale from consumer home audio to industrial building automation and mobile computers.
■As more users intend to use the Cortex-M core in their products for low-power purposes, this application note aims to help you to deploy low-power applications with the M core alive on the NXP i.MX 8M series SoCs.
■It demonstrates how to minimize power consumption with changes on the kernel, the M core application, ATF, and U-Boot when the main system is set into Suspend mode.
■The target audiences of the document are those users who want:
▲Low-power requirement on i.MX 8M.
▲To run both the Linux kernel and the M core application.
▲To run the M core application only in TCM without DDR when the kernel is suspended.
▲SoC IP peripherals’ ownership shared/switched between cores.
▲To become familiar with the expected processor power consumption in various scenarios.
■The data presented in this application note is based on empirical measurements taken on a small sample; the presented results are not guaranteed.

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i.MX 8Mi.MX 8M family

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Application note & Design Guide

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4 October 2021

Rev. 0

AN13400

1.1 MB

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