ARM MHUv2 Mailbox

modulename: arm_mhuv2.ko

configname: CONFIG_ARM_MHU_V2

Linux Kernel Configuration
└─>Device Drivers
└─>Mailbox Hardware Support
└─>ARM MHUv2 Mailbox
In linux kernel since version 5.2 (release Date: 2019-07-07)  
Say Y here if you want to build the ARM MHUv2 controller driver,
which provides unidirectional mailboxes between processing elements.

source code:
drivers/mailbox/arm_mhuv2.c