iommu/mediatek: Add device link for smi-common and m4u
In the lastest SoC, M4U has its special power domain. thus, If the engine begin to work, it should help enable the power for M4U firstly. Currently if the engine work, it always enable the power/clocks for smi-larbs/smi-common. This patch adds device_link for smi-common and M4U. then, if smi-common power is enabled, the M4U power also is powered on automatically. Normally M4U connect with several smi-larbs and their smi-common always are the same, In this patch it get smi-common dev from the last smi-larb device, then add the device_link. Signed-off-by:Yong Wu <yong.wu@mediatek.com> Reviewed-by:
Tomasz Figa <tfiga@chromium.org> Link: https://lore.kernel.org/r/20210111111914.22211-19-yong.wu@mediatek.com Signed-off-by:
Will Deacon <will@kernel.org>
parent
986d9ec5
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