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Some i.MX SoCs contain a system controller that is responsible for controlling the state of the IPs that are present. Communication between the host processor running an OS and the system controller happens through a SCU protocol. This patch adds SCU protocol based power domains drivers. Cc: Ulf Hansson <ulf.hansson@linaro.org> Cc: Rob Herring <robh+dt@kernel.org> Cc: Shawn Guo <shawnguo@kernel.org> Cc: Sascha Hauer <kernel@pengutronix.de> Cc: Fabio Estevam <fabio.estevam@nxp.com> Cc: "Rafael J. Wysocki" <rjw@rjwysocki.net> Cc: Kevin Hilman <khilman@kernel.org> Cc: linux-pm@vger.kernel.org Signed-off-by: Dong Aisheng <aisheng.dong@nxp.com> Reviewed-by: Ulf Hansson <ulf.hansson@linaro.org> Signed-off-by: Shawn Guo <shawnguo@kernel.org>
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574 B
config IMX_SCU bool "IMX SCU Protocol driver" depends on IMX_MBOX help The System Controller Firmware (SCFW) is a low-level system function which runs on a dedicated Cortex-M core to provide power, clock, and resource management. It exists on some i.MX8 processors. e.g. i.MX8QM (QM, QP), and i.MX8QX (QXP, DX).
This driver manages the IPC interface between host CPU and the
SCU firmware running on M4.
config IMX_SCU_PD bool "IMX SCU Power Domain driver" depends on IMX_SCU help The System Controller Firmware (SCFW) based power domain driver.