1*4882a593Smuzhiyun----------------------------------------------------------------- 2*4882a593SmuzhiyunDevice Tree Bindings for the Xilinx Zynq MPSoC Firmware Interface 3*4882a593Smuzhiyun----------------------------------------------------------------- 4*4882a593Smuzhiyun 5*4882a593SmuzhiyunThe zynqmp-firmware node describes the interface to platform firmware. 6*4882a593SmuzhiyunZynqMP has an interface to communicate with secure firmware. Firmware 7*4882a593Smuzhiyundriver provides an interface to firmware APIs. Interface APIs can be 8*4882a593Smuzhiyunused by any driver to communicate to PMUFW(Platform Management Unit). 9*4882a593SmuzhiyunThese requests include clock management, pin control, device control, 10*4882a593Smuzhiyunpower management service, FPGA service and other platform management 11*4882a593Smuzhiyunservices. 12*4882a593Smuzhiyun 13*4882a593SmuzhiyunRequired properties: 14*4882a593Smuzhiyun - compatible: Must contain any of below: 15*4882a593Smuzhiyun "xlnx,zynqmp-firmware" for Zynq Ultrascale+ MPSoC 16*4882a593Smuzhiyun "xlnx,versal-firmware" for Versal 17*4882a593Smuzhiyun - method: The method of calling the PM-API firmware layer. 18*4882a593Smuzhiyun Permitted values are: 19*4882a593Smuzhiyun - "smc" : SMC #0, following the SMCCC 20*4882a593Smuzhiyun - "hvc" : HVC #0, following the SMCCC 21*4882a593Smuzhiyun 22*4882a593Smuzhiyun------- 23*4882a593SmuzhiyunExample 24*4882a593Smuzhiyun------- 25*4882a593Smuzhiyun 26*4882a593SmuzhiyunZynq Ultrascale+ MPSoC 27*4882a593Smuzhiyun---------------------- 28*4882a593Smuzhiyunfirmware { 29*4882a593Smuzhiyun zynqmp_firmware: zynqmp-firmware { 30*4882a593Smuzhiyun compatible = "xlnx,zynqmp-firmware"; 31*4882a593Smuzhiyun method = "smc"; 32*4882a593Smuzhiyun ... 33*4882a593Smuzhiyun }; 34*4882a593Smuzhiyun}; 35*4882a593Smuzhiyun 36*4882a593SmuzhiyunVersal 37*4882a593Smuzhiyun------ 38*4882a593Smuzhiyunfirmware { 39*4882a593Smuzhiyun versal_firmware: versal-firmware { 40*4882a593Smuzhiyun compatible = "xlnx,versal-firmware"; 41*4882a593Smuzhiyun method = "smc"; 42*4882a593Smuzhiyun ... 43*4882a593Smuzhiyun }; 44*4882a593Smuzhiyun}; 45