IMX DSP Protocol driver

modulename: imx-dsp.ko

configname: CONFIG_IMX_DSP

Linux Kernel Configuration
└─>Device Drivers
└─>Firmware Drivers
└─>IMX DSP Protocol driver
In linux kernel since version 4.14.326 (release Date: 2023-09-23)  
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.

source code: