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+# SPDX-License-Identifier: GPL-2.0-only
+config IMX_DSP
+ tristate "IMX DSP Protocol driver"
+ depends on IMX_MBOX
+ help
+ This enables DSP IPC protocol between host AP (Linux)
+ and the firmware running on DSP.
+ DSP exists on some i.MX8 processors (e.g i.MX8QM, i.MX8QXP).
+
+ It acts like a doorbell. Client might use shared memory to
+ exchange information with DSP side.
+
+config IMX_SCU
+ bool "IMX SCU Protocol driver"
+ depends on IMX_MBOX
+ select SOC_BUS
+ 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.
+
+config IMX_SCU_PD
+ bool "IMX SCU Power Domain driver"
+ depends on IMX_SCU
+ help
+ The System Controller Firmware (SCFW) based power domain driver.