arm64: dts: hi3660: add L2 cache topology

This patch adds the L2 cache topology on 96boards Hikey960.
Signed-off-by: Leo Yan <leo.yan@linaro.org>
Signed-off-by: Wei Xu <xuwei5@hisilicon.com>

arch/arm64/boot/dts/hisilicon/hi3660.dtsi

@@ -58,6 +58,7 @@ cpu0: cpu@0 {
 			device_type = "cpu";
 			reg = <0x0 0x0>;
 			enable-method = "psci";
+			next-level-cache = <&A53_L2>;
 			cpu-idle-states = <&CPU_SLEEP &CLUSTER_SLEEP_0>;
 		};
 
@@ -66,6 +67,7 @@ cpu1: cpu@1 {
 			device_type = "cpu";
 			reg = <0x0 0x1>;
 			enable-method = "psci";
+			next-level-cache = <&A53_L2>;
 			cpu-idle-states = <&CPU_SLEEP &CLUSTER_SLEEP_0>;
 		};
 
@@ -74,6 +76,7 @@ cpu2: cpu@2 {
 			device_type = "cpu";
 			reg = <0x0 0x2>;
 			enable-method = "psci";
+			next-level-cache = <&A53_L2>;
 			cpu-idle-states = <&CPU_SLEEP &CLUSTER_SLEEP_0>;
 		};
 
@@ -82,6 +85,7 @@ cpu3: cpu@3 {
 			device_type = "cpu";
 			reg = <0x0 0x3>;
 			enable-method = "psci";
+			next-level-cache = <&A53_L2>;
 			cpu-idle-states = <&CPU_SLEEP &CLUSTER_SLEEP_0>;
 		};
 
@@ -90,6 +94,7 @@ cpu4: cpu@100 {
 			device_type = "cpu";
 			reg = <0x0 0x100>;
 			enable-method = "psci";
+			next-level-cache = <&A73_L2>;
 			cpu-idle-states = <
 					&CPU_NAP
 					&CPU_SLEEP
@@ -102,6 +107,7 @@ cpu5: cpu@101 {
 			device_type = "cpu";
 			reg = <0x0 0x101>;
 			enable-method = "psci";
+			next-level-cache = <&A73_L2>;
 			cpu-idle-states = <
 					&CPU_NAP
 					&CPU_SLEEP
@@ -114,6 +120,7 @@ cpu6: cpu@102 {
 			device_type = "cpu";
 			reg = <0x0 0x102>;
 			enable-method = "psci";
+			next-level-cache = <&A73_L2>;
 			cpu-idle-states = <
 					&CPU_NAP
 					&CPU_SLEEP
@@ -126,6 +133,7 @@ cpu7: cpu@103 {
 			device_type = "cpu";
 			reg = <0x0 0x103>;
 			enable-method = "psci";
+			next-level-cache = <&A73_L2>;
 			cpu-idle-states = <
 					&CPU_NAP
 					&CPU_SLEEP
@@ -171,6 +179,14 @@ CLUSTER_SLEEP_1: cluster-sleep-1 {
 				min-residency-us = <20000>;
 			};
 		};
+
+		A53_L2: l2-cache0 {
+			compatible = "cache";
+		};
+
+		A73_L2: l2-cache1 {
+			compatible = "cache";
+		};
 	};
 
 	gic: interrupt-controller@e82b0000 {