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zynqmp_pm_get_eemi_ops() was removed in commit4db8180ffe: "Firmware: xilinx: Remove eemi ops for fpga related APIs", but not in IS_REACHABLE(CONFIG_ZYNQMP_FIRMWARE). Any driver who want to communicate with PMC using EEMI APIs use the functions provided for each function This removed zynqmp_pm_get_eemi_ops() in IS_REACHABLE(CONFIG_ZYNQMP_FIRMWARE), and also modify the documentation for this driver. Fixes:4db8180ffe("firmware: xilinx: Remove eemi ops for fpga related APIs") Signed-off-by: Nobuhiro Iwamatsu <iwamatsu@nigauri.org> Link: https://lore.kernel.org/r/20210215155849.2425846-1-iwamatsu@nigauri.org Signed-off-by: Michal Simek <michal.simek@xilinx.com>
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====================================
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Xilinx Zynq MPSoC EEMI Documentation
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====================================
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Xilinx Zynq MPSoC Firmware Interface
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-------------------------------------
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The zynqmp-firmware node describes the interface to platform firmware.
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ZynqMP has an interface to communicate with secure firmware. Firmware
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driver provides an interface to firmware APIs. Interface APIs can be
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used by any driver to communicate with PMC(Platform Management Controller).
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Embedded Energy Management Interface (EEMI)
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----------------------------------------------
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The embedded energy management interface is used to allow software
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components running across different processing clusters on a chip or
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device to communicate with a power management controller (PMC) on a
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device to issue or respond to power management requests.
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Any driver who wants to communicate with PMC using EEMI APIs use the
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functions provided for each function.
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IOCTL
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------
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IOCTL API is for device control and configuration. It is not a system
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IOCTL but it is an EEMI API. This API can be used by master to control
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any device specific configuration. IOCTL definitions can be platform
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specific. This API also manage shared device configuration.
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The following IOCTL IDs are valid for device control:
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- IOCTL_SET_PLL_FRAC_MODE 8
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- IOCTL_GET_PLL_FRAC_MODE 9
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- IOCTL_SET_PLL_FRAC_DATA 10
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- IOCTL_GET_PLL_FRAC_DATA 11
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Refer EEMI API guide [0] for IOCTL specific parameters and other EEMI APIs.
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References
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----------
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[0] Embedded Energy Management Interface (EEMI) API guide:
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https://www.xilinx.com/support/documentation/user_guides/ug1200-eemi-api.pdf
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