1*4882a593Smuzhiyun-------------------------------------------------------------------------- 2*4882a593Smuzhiyun = Zynq UltraScale+ MPSoC and Versal reset driver binding = 3*4882a593Smuzhiyun-------------------------------------------------------------------------- 4*4882a593SmuzhiyunThe Zynq UltraScale+ MPSoC and Versal has several different resets. 5*4882a593Smuzhiyun 6*4882a593SmuzhiyunSee Chapter 36 of the Zynq UltraScale+ MPSoC TRM (UG) for more information 7*4882a593Smuzhiyunabout zynqmp resets. 8*4882a593Smuzhiyun 9*4882a593SmuzhiyunPlease also refer to reset.txt in this directory for common reset 10*4882a593Smuzhiyuncontroller binding usage. 11*4882a593Smuzhiyun 12*4882a593SmuzhiyunRequired Properties: 13*4882a593Smuzhiyun- compatible: "xlnx,zynqmp-reset" for Zynq UltraScale+ MPSoC platform 14*4882a593Smuzhiyun "xlnx,versal-reset" for Versal platform 15*4882a593Smuzhiyun- #reset-cells: Specifies the number of cells needed to encode reset 16*4882a593Smuzhiyun line, should be 1 17*4882a593Smuzhiyun 18*4882a593Smuzhiyun------- 19*4882a593SmuzhiyunExample 20*4882a593Smuzhiyun------- 21*4882a593Smuzhiyun 22*4882a593Smuzhiyunfirmware { 23*4882a593Smuzhiyun zynqmp_firmware: zynqmp-firmware { 24*4882a593Smuzhiyun compatible = "xlnx,zynqmp-firmware"; 25*4882a593Smuzhiyun method = "smc"; 26*4882a593Smuzhiyun 27*4882a593Smuzhiyun zynqmp_reset: reset-controller { 28*4882a593Smuzhiyun compatible = "xlnx,zynqmp-reset"; 29*4882a593Smuzhiyun #reset-cells = <1>; 30*4882a593Smuzhiyun }; 31*4882a593Smuzhiyun }; 32*4882a593Smuzhiyun}; 33*4882a593Smuzhiyun 34*4882a593SmuzhiyunSpecifying reset lines connected to IP modules 35*4882a593Smuzhiyun============================================== 36*4882a593Smuzhiyun 37*4882a593SmuzhiyunDevice nodes that need access to reset lines should 38*4882a593Smuzhiyunspecify them as a reset phandle in their corresponding node as 39*4882a593Smuzhiyunspecified in reset.txt. 40*4882a593Smuzhiyun 41*4882a593SmuzhiyunFor list of all valid reset indices for Zynq UltraScale+ MPSoC see 42*4882a593Smuzhiyun<dt-bindings/reset/xlnx-zynqmp-resets.h> 43*4882a593SmuzhiyunFor list of all valid reset indices for Versal see 44*4882a593Smuzhiyun<dt-bindings/reset/xlnx-versal-resets.h> 45*4882a593Smuzhiyun 46*4882a593SmuzhiyunExample: 47*4882a593Smuzhiyun 48*4882a593Smuzhiyunserdes: zynqmp_phy@fd400000 { 49*4882a593Smuzhiyun ... 50*4882a593Smuzhiyun 51*4882a593Smuzhiyun resets = <&zynqmp_reset ZYNQMP_RESET_SATA>; 52*4882a593Smuzhiyun reset-names = "sata_rst"; 53*4882a593Smuzhiyun 54*4882a593Smuzhiyun ... 55*4882a593Smuzhiyun}; 56