41 lines · plain
1====================================2Xilinx Zynq MPSoC EEMI Documentation3====================================4 5Xilinx Zynq MPSoC Firmware Interface6-------------------------------------7The zynqmp-firmware node describes the interface to platform firmware.8ZynqMP has an interface to communicate with secure firmware. Firmware9driver provides an interface to firmware APIs. Interface APIs can be10used by any driver to communicate with PMC(Platform Management Controller).11 12Embedded Energy Management Interface (EEMI)13----------------------------------------------14The embedded energy management interface is used to allow software15components running across different processing clusters on a chip or16device to communicate with a power management controller (PMC) on a17device to issue or respond to power management requests.18 19Any driver who wants to communicate with PMC using EEMI APIs use the20functions provided for each function.21 22IOCTL23------24IOCTL API is for device control and configuration. It is not a system25IOCTL but it is an EEMI API. This API can be used by master to control26any device specific configuration. IOCTL definitions can be platform27specific. This API also manage shared device configuration.28 29The following IOCTL IDs are valid for device control:30- IOCTL_SET_PLL_FRAC_MODE 831- IOCTL_GET_PLL_FRAC_MODE 932- IOCTL_SET_PLL_FRAC_DATA 1033- IOCTL_GET_PLL_FRAC_DATA 1134 35Refer EEMI API guide [0] for IOCTL specific parameters and other EEMI APIs.36 37References38----------39[0] Embedded Energy Management Interface (EEMI) API guide:40 https://www.xilinx.com/support/documentation/user_guides/ug1200-eemi-api.pdf41