config IMX_SCU bool "IMX SCU Protocol driver" depends on IMX_MBOX help The System Controller Firmware (SCFW) is a low-level system function which runs on a dedicated Cortex-M core to provide power, clock, and resource management. It exists on some i.MX8 processors. e.g. i.MX8QM (QM, QP), and i.MX8QX (QXP, DX). This driver manages the IPC interface between host CPU and the SCU firmware running on M4.