reg = <0x0>;
             riscv,isa = "rv64imafdc";
             mmu-type = "riscv,sv48";
-            cpu-idle-states = <&CPU_RET_0_0 &CPU_NONRET_0_0
-                            &CLUSTER_RET_0 &CLUSTER_NONRET_0>;
+            cpu-idle-states = <&CPU_RET_0_0>, <&CPU_NONRET_0_0>,
+                            <&CLUSTER_RET_0>, <&CLUSTER_NONRET_0>;
 
             cpu_intc0: interrupt-controller {
                 #interrupt-cells = <1>;
             reg = <0x1>;
             riscv,isa = "rv64imafdc";
             mmu-type = "riscv,sv48";
-            cpu-idle-states = <&CPU_RET_0_0 &CPU_NONRET_0_0
-                            &CLUSTER_RET_0 &CLUSTER_NONRET_0>;
+            cpu-idle-states = <&CPU_RET_0_0>, <&CPU_NONRET_0_0>,
+                            <&CLUSTER_RET_0>, <&CLUSTER_NONRET_0>;
 
             cpu_intc1: interrupt-controller {
                 #interrupt-cells = <1>;
             reg = <0x10>;
             riscv,isa = "rv64imafdc";
             mmu-type = "riscv,sv48";
-            cpu-idle-states = <&CPU_RET_1_0 &CPU_NONRET_1_0
-                            &CLUSTER_RET_1 &CLUSTER_NONRET_1>;
+            cpu-idle-states = <&CPU_RET_1_0>, <&CPU_NONRET_1_0>,
+                            <&CLUSTER_RET_1>, <&CLUSTER_NONRET_1>;
 
             cpu_intc10: interrupt-controller {
                 #interrupt-cells = <1>;
             reg = <0x11>;
             riscv,isa = "rv64imafdc";
             mmu-type = "riscv,sv48";
-            cpu-idle-states = <&CPU_RET_1_0 &CPU_NONRET_1_0
-                            &CLUSTER_RET_1 &CLUSTER_NONRET_1>;
+            cpu-idle-states = <&CPU_RET_1_0>, <&CPU_NONRET_1_0>,
+                            <&CLUSTER_RET_1>, <&CLUSTER_NONRET_1>;
 
             cpu_intc11: interrupt-controller {
                 #interrupt-cells = <1>;