tree ac28789f2b0185772b53cba68d3a6a8a0375b85d
parent c3bdd3d3cf0f9cdf3be117e39386492e645a1bb5
author Tamas Ban <tamas.ban@arm.com> 1641830643 +0100
committer David Vincze <david.vincze@arm.com> 1652276822 +0200

feat(drivers/arm/mhu): add MHU driver

The Arm Message Handling Unit (MHU) is a mailbox controller used to
communicate with other processing element(s). Adding a driver to
enable the communication:
- Adding generic MHU driver interface,
- Adding MHU_v2_x driver.

Driver supports:
 - Discovering available MHU channels,
 - Sending / receiving words over MHU channels,
 - Signaling happens over a dedicated channel.

Signed-off-by: Tamas Ban <tamas.ban@arm.com>
Signed-off-by: David Vincze <david.vincze@arm.com>
Change-Id: I41a5b968f6b8319cdbdf7907d70bd8837839862e