arm64: dts: sprd: adding ETM entries to Spreadtrum SC9836

Since ETMv4 driver has been merged, this patch adds ETM nodes for SC9836,
and four funnel input ports to connect with ETM output ports.

Signed-off-by: Chunyan Zhang <zhang.chunyan@linaro.org>
Signed-off-by: Olof Johansson <olof@lixom.net>

arch/arm64/boot/dts/sprd/sc9836.dtsi

@@ -16,28 +16,28 @@
 		#address-cells = <2>;
 		#size-cells = <0>;
 
-		cpu@0 {
+		cpu0: cpu@0 {
 			device_type = "cpu";
 			compatible = "arm,cortex-a53", "arm,armv8";
 			reg = <0x0 0x0>;
 			enable-method = "psci";
 		};
 
-		cpu@1 {
+		cpu1: cpu@1 {
 			device_type = "cpu";
 			compatible = "arm,cortex-a53", "arm,armv8";
 			reg = <0x0 0x1>;
 			enable-method = "psci";
 		};
 
-		cpu@2 {
+		cpu2: cpu@2 {
 			device_type = "cpu";
 			compatible = "arm,cortex-a53", "arm,armv8";
 			reg = <0x0 0x2>;
 			enable-method = "psci";
 		};
 
-		cpu@3 {
+		cpu3: cpu@3 {
 			device_type = "cpu";
 			compatible = "arm,cortex-a53", "arm,armv8";
 			reg = <0x0 0x3>;
@@ -75,14 +75,103 @@
 				};
 			};
 
-			/* funnel input port 0~3 is reserved for ETMs */
+			/* funnel input port 0-4 */
 			port@1 {
+				reg = <0>;
+				funnel_in_port0: endpoint {
+					slave-mode;
+					remote-endpoint = <&etm0_out>;
+				};
+			};
+
+			port@2 {
+				reg = <1>;
+				funnel_in_port1: endpoint {
+					slave-mode;
+					remote-endpoint = <&etm1_out>;
+				};
+			};
+
+			port@3 {
+				reg = <2>;
+				funnel_in_port2: endpoint {
+					slave-mode;
+					remote-endpoint = <&etm2_out>;
+				};
+			};
+
+			port@4 {
+				reg = <3>;
+				funnel_in_port3: endpoint {
+					slave-mode;
+					remote-endpoint = <&etm3_out>;
+				};
+			};
+
+			port@5 {
 				reg = <4>;
 				funnel_in_port4: endpoint {
 					slave-mode;
 					remote-endpoint = <&stm_out>;
 				};
 			};
+			/* Other input ports aren't connected to anyone */
+		};
+	};
+
+	etm@10440000 {
+		compatible = "arm,coresight-etm4x", "arm,primecell";
+		reg = <0 0x10440000 0 0x1000>;
+
+		cpu = <&cpu0>;
+		clocks = <&clk26mhz>;
+		clock-names = "apb_pclk";
+		port {
+			etm0_out: endpoint {
+				remote-endpoint = <&funnel_in_port0>;
+			};
+		};
+	};
+
+	etm@10540000 {
+		compatible = "arm,coresight-etm4x", "arm,primecell";
+		reg = <0 0x10540000 0 0x1000>;
+
+		cpu = <&cpu1>;
+		clocks = <&clk26mhz>;
+		clock-names = "apb_pclk";
+		port {
+			etm1_out: endpoint {
+				remote-endpoint = <&funnel_in_port1>;
+			};
+		};
+	};
+
+	etm@10640000 {
+		compatible = "arm,coresight-etm4x", "arm,primecell";
+		reg = <0 0x10640000 0 0x1000>;
+
+		cpu = <&cpu2>;
+		clocks = <&clk26mhz>;
+		clock-names = "apb_pclk";
+		port {
+			etm2_out: endpoint {
+				remote-endpoint = <&funnel_in_port2>;
+			};
+		};
+	};
+
+	etm@10740000 {
+		compatible = "arm,coresight-etm4x", "arm,primecell";
+		reg = <0 0x10740000 0 0x1000>;
+
+		cpu = <&cpu3>;
+		clocks = <&clk26mhz>;
+		clock-names = "apb_pclk";
+		port {
+			etm3_out: endpoint {
+				remote-endpoint = <&funnel_in_port3>;
+			};
 		};
 	};