diff --git a/arch/riscv/boot/dts/thead/th1520.dtsi b/arch/riscv/boot/dts/thead/th1520.dtsi
index 0b57699ba398..8e50e24040c2 100644
--- a/arch/riscv/boot/dts/thead/th1520.dtsi
+++ b/arch/riscv/boot/dts/thead/th1520.dtsi
@@ -24,8 +24,10 @@ c910_0: cpu@0 {
 			device_type = "cpu";
 			riscv,isa = "rv64imafdc";
 			riscv,isa-base = "rv64i";
-			riscv,isa-extensions = "i", "m", "a", "f", "d", "c", "zicntr", "zicsr",
-					       "zifencei", "zihpm", "xtheadvector";
+			riscv,isa-extensions = "i", "m", "a", "f", "d", "c",
+					       "ziccrse", "zicntr", "zicsr",
+					       "zifencei", "zihpm",
+					       "xtheadvector";
 			thead,vlenb = <16>;
 			reg = <0>;
 			i-cache-block-size = <64>;
@@ -49,8 +51,10 @@ c910_1: cpu@1 {
 			device_type = "cpu";
 			riscv,isa = "rv64imafdc";
 			riscv,isa-base = "rv64i";
-			riscv,isa-extensions = "i", "m", "a", "f", "d", "c", "zicntr", "zicsr",
-					       "zifencei", "zihpm", "xtheadvector";
+			riscv,isa-extensions = "i", "m", "a", "f", "d", "c",
+					       "ziccrse", "zicntr", "zicsr",
+					       "zifencei", "zihpm",
+					       "xtheadvector";
 			thead,vlenb = <16>;
 			reg = <1>;
 			i-cache-block-size = <64>;
@@ -74,8 +78,10 @@ c910_2: cpu@2 {
 			device_type = "cpu";
 			riscv,isa = "rv64imafdc";
 			riscv,isa-base = "rv64i";
-			riscv,isa-extensions = "i", "m", "a", "f", "d", "c", "zicntr", "zicsr",
-					       "zifencei", "zihpm", "xtheadvector";
+			riscv,isa-extensions = "i", "m", "a", "f", "d", "c",
+					       "ziccrse", "zicntr", "zicsr",
+					       "zifencei", "zihpm",
+					       "xtheadvector";
 			thead,vlenb = <16>;
 			reg = <2>;
 			i-cache-block-size = <64>;
@@ -99,8 +105,10 @@ c910_3: cpu@3 {
 			device_type = "cpu";
 			riscv,isa = "rv64imafdc";
 			riscv,isa-base = "rv64i";
-			riscv,isa-extensions = "i", "m", "a", "f", "d", "c", "zicntr", "zicsr",
-					       "zifencei", "zihpm", "xtheadvector";
+			riscv,isa-extensions = "i", "m", "a", "f", "d", "c",
+					       "ziccrse", "zicntr", "zicsr",
+					       "zifencei", "zihpm",
+					       "xtheadvector";
 			thead,vlenb = <16>;
 			reg = <3>;
 			i-cache-block-size = <64>;