Modem Host Interface (MHI) bus

modulename: mhi.ko

configname: CONFIG_MHI_BUS

Linux Kernel Configuration
└─>Device Drivers
└─>Bus devices
└─>Modem Host Interface (MHI) bus
In linux kernel since version 5.1 (release Date: 2019-05-05)  
Bus driver for MHI protocol. Modem Host Interface (MHI) is a
communication protocol used by the host processors to control
and communicate with modem devices over a high speed peripheral
bus or shared memory.

source code:
is selected by
CONFIG_DRM_ACCEL_QAIC