arm64: dts: qcom: msm8916: Enable CoreSight STM component

Add DT binding for CoreSight System Trace Macrocell (STM) on msm8916,
which can benefit the CoreSight development on DB410c.
Signed-off-by: Georgi Djakov <georgi.djakov@linaro.org>
Signed-off-by: Leo Yan <leo.yan@linaro.org>
Acked-by: Stephan Gerhold <stephan@gerhold.net>
Link: https://lore.kernel.org/r/20210321124212.4253-1-leo.yan@linaro.orgSigned-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>

arch/arm64/boot/dts/qcom/apq8016-sbc.dtsi

@@ -414,6 +414,7 @@ &wcd_codec {
 &funnel0 { status = "okay"; };
 &funnel1 { status = "okay"; };
 &replicator { status = "okay"; };
+&stm { status = "okay"; };
 &tpiu { status = "okay"; };
 
 &smd_rpm_regulators {

arch/arm64/boot/dts/qcom/msm8916.dtsi

@@ -489,6 +489,26 @@ snoc: interconnect@580000 {
 				 <&rpmcc RPM_SMD_SNOC_A_CLK>;
 		};
 
+		stm: stm@802000 {
+			compatible = "arm,coresight-stm", "arm,primecell";
+			reg = <0x00802000 0x1000>,
+			      <0x09280000 0x180000>;
+			reg-names = "stm-base", "stm-stimulus-base";
+
+			clocks = <&rpmcc RPM_QDSS_CLK>, <&rpmcc RPM_QDSS_A_CLK>;
+			clock-names = "apb_pclk", "atclk";
+
+			status = "disabled";
+
+			out-ports {
+				port {
+					stm_out: endpoint {
+						remote-endpoint = <&funnel0_in7>;
+					};
+				};
+			};
+		};
+
 		/* System CTIs */
 		/* CTI 0 - TMC connections */
 		cti0: cti@810000 {
@@ -562,6 +582,13 @@ funnel0_in4: endpoint {
 						remote-endpoint = <&funnel1_out>;
 					};
 				};
+
+				port@7 {
+					reg = <7>;
+					funnel0_in7: endpoint {
+						remote-endpoint = <&stm_out>;
+					};
+				};
 			};
 
 			out-ports {