ARM MHU Mailbox

modulename: arm_mhu.ko

configname: CONFIG_ARM_MHU

Linux Kernel Configuration
└─>Device Drivers
└─>Mailbox Hardware Support
└─>ARM MHU Mailbox
In linux kernel since version 3.10 (release Date: 2013-06-30)  
Say Y here if you want to build the ARM MHU controller driver.
The controller has 3 mailbox channels, the last of which can be
used in Secure mode only.

source code: