1----------------------------------------------------------------- 2Device Tree Bindings for the Xilinx Zynq MPSoC Firmware Interface 3----------------------------------------------------------------- 4 5The zynqmp-firmware node describes the interface to platform firmware. 6ZynqMP has an interface to communicate with secure firmware. Firmware 7driver provides an interface to firmware APIs. Interface APIs can be 8used by any driver to communicate to PMUFW(Platform Management Unit). 9These requests include clock management, pin control, device control, 10power management service, FPGA service and other platform management 11services. 12 13Required properties: 14 - compatible: Must contain any of below: 15 "xlnx,zynqmp-firmware" for Zynq Ultrascale+ MPSoC 16 "xlnx,versal-firmware" for Versal 17 - method: The method of calling the PM-API firmware layer. 18 Permitted values are: 19 - "smc" : SMC #0, following the SMCCC 20 - "hvc" : HVC #0, following the SMCCC 21 22------- 23Example 24------- 25 26Zynq Ultrascale+ MPSoC 27---------------------- 28firmware { 29 zynqmp_firmware: zynqmp-firmware { 30 compatible = "xlnx,zynqmp-firmware"; 31 method = "smc"; 32 ... 33 }; 34}; 35 36Versal 37------ 38firmware { 39 versal_firmware: versal-firmware { 40 compatible = "xlnx,versal-firmware"; 41 method = "smc"; 42 ... 43 }; 44}; 45