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Nikolai BurovandUlf Hansson
86cb2f65aa
On recent MediaTek SoCs such as MT6858, the kernel is required to use a secure monitor call (SMC) to enable or disable the modem power domain. The power domain control register can be read, but firmware prevents it from being modified directly. Some other parts of the power sequence, such as setting the ext_buck_iso register, still need to be performed on the kernel side. In preparation for modem support, add a flag to enable this new power sequence for SoCs that need it. Power domains using this flag are not expected to configure any bus protection registers, since these are handled internally by the SMC call. Signed-off-by: Nikolai Burov <nikolai.burov@jolla.com> Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com> Reviewed-by: Matthias Brugger <matthias.bgg@gmail.com> Signed-off-by: Ulf Hansson <ulfh@kernel.org>