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2 Xilinx Zynq MPSoC EEMI Documentation 2 Xilinx Zynq MPSoC EEMI Documentation
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4 4
5 Xilinx Zynq MPSoC Firmware Interface 5 Xilinx Zynq MPSoC Firmware Interface
6 ------------------------------------- 6 -------------------------------------
7 The zynqmp-firmware node describes the interfa 7 The zynqmp-firmware node describes the interface to platform firmware.
8 ZynqMP has an interface to communicate with se 8 ZynqMP has an interface to communicate with secure firmware. Firmware
9 driver provides an interface to firmware APIs. 9 driver provides an interface to firmware APIs. Interface APIs can be
10 used by any driver to communicate with PMC(Pla 10 used by any driver to communicate with PMC(Platform Management Controller).
11 11
12 Embedded Energy Management Interface (EEMI) 12 Embedded Energy Management Interface (EEMI)
13 ---------------------------------------------- 13 ----------------------------------------------
14 The embedded energy management interface is us 14 The embedded energy management interface is used to allow software
15 components running across different processing 15 components running across different processing clusters on a chip or
16 device to communicate with a power management 16 device to communicate with a power management controller (PMC) on a
17 device to issue or respond to power management 17 device to issue or respond to power management requests.
18 18
19 Any driver who wants to communicate with PMC u 19 Any driver who wants to communicate with PMC using EEMI APIs use the
20 functions provided for each function. 20 functions provided for each function.
21 21
22 IOCTL 22 IOCTL
23 ------ 23 ------
24 IOCTL API is for device control and configurat 24 IOCTL API is for device control and configuration. It is not a system
25 IOCTL but it is an EEMI API. This API can be u 25 IOCTL but it is an EEMI API. This API can be used by master to control
26 any device specific configuration. IOCTL defin 26 any device specific configuration. IOCTL definitions can be platform
27 specific. This API also manage shared device c 27 specific. This API also manage shared device configuration.
28 28
29 The following IOCTL IDs are valid for device c 29 The following IOCTL IDs are valid for device control:
30 - IOCTL_SET_PLL_FRAC_MODE 8 30 - IOCTL_SET_PLL_FRAC_MODE 8
31 - IOCTL_GET_PLL_FRAC_MODE 9 31 - IOCTL_GET_PLL_FRAC_MODE 9
32 - IOCTL_SET_PLL_FRAC_DATA 10 32 - IOCTL_SET_PLL_FRAC_DATA 10
33 - IOCTL_GET_PLL_FRAC_DATA 11 33 - IOCTL_GET_PLL_FRAC_DATA 11
34 34
35 Refer EEMI API guide [0] for IOCTL specific pa 35 Refer EEMI API guide [0] for IOCTL specific parameters and other EEMI APIs.
36 36
37 References 37 References
38 ---------- 38 ----------
39 [0] Embedded Energy Management Interface (EEMI 39 [0] Embedded Energy Management Interface (EEMI) API guide:
40 https://www.xilinx.com/support/documentati 40 https://www.xilinx.com/support/documentation/user_guides/ug1200-eemi-api.pdf
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