tree 05dbe2a7497daffc8ed9818ec02d262ec444f70f
parent 2bd26faf62411c75111fea4b23c542865383b068
author Soby Mathew <soby.mathew@arm.com> 1479126345 +0000
committer Soby Mathew <soby.mathew@arm.com> 1496665937 +0100

CSS: Add SCMI driver for SCP

This patch adds the SCMI driver for communicating with SCP. The power
domain management and system power management protocol of the SCMI
specification[1] is implemented in the driver. The SCP power management
abstraction layer for SCMI for CSS power management is also added.

A new buid option `CSS_USE_SCMI_DRIVER` is introduced to select SCMI
driver over SCPI.

[1] ARM System Control and Management Interface v1.0 (SCMI)
Document number: ARM DEN 0056A

Change-Id: I67265615a17e679a2afe810b9b0043711ba09dbb
Signed-off-by: Soby Mathew <soby.mathew@arm.com>