ARM MHU Mailbox

modulename: arm_mhu.ko
configname: CONFIG_ARM_MHU

Linux Kernel Configuration
└─> Device Drivers
└─> Mailbox Hardware Support
└─> ARM MHU Mailbox

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: