LoongArch: dts: Add new supported device nodes to Loongson-2K2000

By now, more Loongson-2K2000 related drivers are supported, such as
clock controller and thermal controller. So we add these device nodes
to the Loongson-2K2000 dts file.
Signed-off-by: Binbin Zhou <zhoubinbin@loongson.cn>
Signed-off-by: Huacai Chen <chenhuacai@loongson.cn>

arch/loongarch/boot/dts/loongson-2k2000.dtsi

@@ -6,6 +6,7 @@
 /dts-v1/;
 
 #include <dt-bindings/interrupt-controller/irq.h>
+#include <dt-bindings/clock/loongson,ls2k-clk.h>
 
 / {
 	#address-cells = <2>;
@@ -19,21 +20,22 @@ cpu0: cpu@1 {
 			compatible = "loongson,la364";
 			device_type = "cpu";
 			reg = <0x0>;
-			clocks = <&cpu_clk>;
+			clocks = <&clk LOONGSON2_NODE_CLK>;
 		};
 
 		cpu1: cpu@2 {
 			compatible = "loongson,la364";
 			device_type = "cpu";
 			reg = <0x1>;
-			clocks = <&cpu_clk>;
+			clocks = <&clk LOONGSON2_NODE_CLK>;
 		};
 	};
 
-	cpu_clk: cpu-clk {
+	ref_100m: clock-ref-100m {
 		compatible = "fixed-clock";
 		#clock-cells = <0>;
-		clock-frequency = <1400000000>;
+		clock-frequency = <100000000>;
+		clock-output-names = "ref_100m";
 	};
 
 	cpuintc: interrupt-controller {
@@ -42,6 +44,28 @@ cpuintc: interrupt-controller {
 		interrupt-controller;
 	};
 
+	thermal-zones {
+		cpu-thermal {
+			polling-delay-passive = <1000>;
+			polling-delay = <5000>;
+			thermal-sensors = <&tsensor 0>;
+
+			trips {
+				cpu-alert {
+					temperature = <40000>;
+					hysteresis = <2000>;
+					type = "active";
+				};
+
+				cpu-crit {
+					temperature = <85000>;
+					hysteresis = <5000>;
+					type = "critical";
+				};
+			};
+		};
+	};
+
 	bus@10000000 {
 		compatible = "simple-bus";
 		ranges = <0x0 0x10000000 0x0 0x10000000 0x0 0x10000000>,
@@ -58,6 +82,14 @@ isa@18400000 {
 			ranges = <1 0x0 0x0 0x18400000 0x4000>;
 		};
 
+		clk: clock-controller@10010480 {
+			compatible = "loongson,ls2k2000-clk";
+			reg = <0x0 0x10010480 0x0 0x100>;
+			#clock-cells = <1>;
+			clocks = <&ref_100m>;
+			clock-names = "ref_100m";
+		};
+
 		pmc: power-management@100d0000 {
 			compatible = "loongson,ls2k2000-pmc", "loongson,ls2k0500-pmc", "syscon";
 			reg = <0x0 0x100d0000 0x0 0x58>;
@@ -80,6 +112,15 @@ syscon-poweroff {
 			};
 		};
 
+		tsensor: thermal-sensor@1fe01460 {
+			compatible = "loongson,ls2k2000-thermal";
+			reg = <0x0 0x1fe01460 0x0 0x30>,
+			      <0x0 0x1fe0019c 0x0 0x4>;
+			interrupt-parent = <&liointc>;
+			interrupts = <7 IRQ_TYPE_LEVEL_HIGH>;
+			#thermal-sensor-cells = <1>;
+		};
+
 		liointc: interrupt-controller@1fe01400 {
 			compatible = "loongson,liointc-1.0";
 			reg = <0x0 0x1fe01400 0x0 0x64>;