tree 716cedfd84392ae1e91b640a595a653ddde019a9
parent 1fe767a56c32730a947fc2bfcac5d14490bde6ff
author Elaine Zhang <zhangqing@rock-chips.com> 1457558575 +0800
committer Heiko Stuebner <heiko@sntech.de> 1459162665 +0200

soc: rockchip: power-domain: add support for sub-power domains

This patch adds support for making one power domain a sub-domain of
other domain. This is useful for modeling power dependences,
which needs to have more than one power domain enabled to be operational.

Signed-off-by: Elaine Zhang <zhangqing@rock-chips.com>
[restructured error handling in subdomain-addition]
Signed-off-by: Heiko Stuebner <heiko@sntech.de>