ARM: mvebu: Allow to power down L2 cache controller in idle mode
This commit adds a function which adjusts the PMSU configuration to automatically power down the L2 and coherency fabric when we enter a certain idle state. This feature is part of the Power Management Service Unit of the Armada 370 and Armada XP SoCs. Signed-off-by: NGregory CLEMENT <gregory.clement@free-electrons.com> Link: https://lkml.kernel.org/r/1397488214-20685-8-git-send-email-gregory.clement@free-electrons.comSigned-off-by: NJason Cooper <jason@lakedaemon.net>
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