[PATCH v2 1/1] arm64: dts: imx8mq: Add coresight trace components

[Alexander Stein]

Add coresight trace components (ETM, ETF, ETB and Funnel).

┌───────┐  ┌───────┐  ┌───────┐
│ CPU0  ├─►│ ETM0  ├─►│       │
└───────┘  └───────┘  │       │
                      │       │
┌───────┐  ┌───────┐  │  ATP  │
│ CPU1  ├─►│ ETM1  ├─►│       │
└───────┘  └───────┘  │       │
                      │ FUNNEL│
┌───────┐  ┌───────┐  │       │
│ CPU2  ├─►│ ETM2  ├─►│       │
└───────┘  └───────┘  │       │   ┌─────┐
                      │       │   │     │
┌───────┐  ┌───────┐  │       │   │ M4  │
│ CPU3  ├─►│ ETM3  ├─►│       │   │     │
└───────┘  └───────┘  └───┬───┘   └──┬──┘                        AXI
                          │          │                            ▲
                          ▼          ▼                            │
                      ┌───────────────────────────┐   ┌─────┐   ┌─┴──┐
                      │          ATP FUNNEL       ├──►│ ETF ├─► │ETR │
                      └───────────────────────────┘   └─────┘   └────┘

Signed-off-by: Alexander Stein <alexander.stein at ew.tq-group.com>
---
Changes in v2:
* Adjust reg size
* Remove arm,primecell-periphid

This is a 1:1 copy from commit 71c2ac9a2a3da ("arm64: dts: imx8mp: Add
coresight trace components") with the following changes:
* Adjust clock names
* Replace (Cortex-)M7 with M4 in comment
* Remove Audio DSP funnel port
* Changes from ba345b77fae7 ("arm64: dts: imx8mp: remove arm,primecell-periphid at etm nodes") included as well

I was able to test ETM using tools/perf/tests/shell/test_arm_coresight.sh
But I'm getting timeout errors for Manual Flushs, same on imx8mp though.

 arch/arm64/boot/dts/freescale/imx8mq.dtsi | 192 ++++++++++++++++++++++
 1 file changed, 192 insertions(+)

diff --git a/arch/arm64/boot/dts/freescale/imx8mq.dtsi b/arch/arm64/boot/dts/freescale/imx8mq.dtsi
index 0a0ec80a0b0c..7f4194c33683 100644
--- a/arch/arm64/boot/dts/freescale/imx8mq.dtsi
+++ b/arch/arm64/boot/dts/freescale/imx8mq.dtsi
@@ -330,6 +330,198 @@ soc: soc at 0 {
 		nvmem-cells = <&imx8mq_uid>;
 		nvmem-cell-names = "soc_unique_id";
 
+		etm0: etm at 28440000 {
+			compatible = "arm,coresight-etm4x", "arm,primecell";
+			reg = <0x28440000 0x1000>;
+			cpu = <&A53_0>;
+			clocks = <&clk IMX8MQ_CLK_MAIN_AXI>;
+			clock-names = "apb_pclk";
+
+			out-ports {
+				port {
+					etm0_out_port: endpoint {
+						remote-endpoint = <&ca_funnel_in_port0>;
+					};
+				};
+			};
+		};
+
+		etm1: etm at 28540000 {
+			compatible = "arm,coresight-etm4x", "arm,primecell";
+			reg = <0x28540000 0x1000>;
+			cpu = <&A53_1>;
+			clocks = <&clk IMX8MQ_CLK_MAIN_AXI>;
+			clock-names = "apb_pclk";
+
+			out-ports {
+				port {
+					etm1_out_port: endpoint {
+						remote-endpoint = <&ca_funnel_in_port1>;
+					};
+				};
+			};
+		};
+
+		etm2: etm at 28640000 {
+			compatible = "arm,coresight-etm4x", "arm,primecell";
+			reg = <0x28640000 0x1000>;
+			cpu = <&A53_2>;
+			clocks = <&clk IMX8MQ_CLK_MAIN_AXI>;
+			clock-names = "apb_pclk";
+
+			out-ports {
+				port {
+					etm2_out_port: endpoint {
+						remote-endpoint = <&ca_funnel_in_port2>;
+					};
+				};
+			};
+		};
+
+		etm3: etm at 28740000 {
+			compatible = "arm,coresight-etm4x", "arm,primecell";
+			reg = <0x28740000 0x1000>;
+			cpu = <&A53_3>;
+			clocks = <&clk IMX8MQ_CLK_MAIN_AXI>;
+			clock-names = "apb_pclk";
+
+			out-ports {
+				port {
+					etm3_out_port: endpoint {
+						remote-endpoint = <&ca_funnel_in_port3>;
+					};
+				};
+			};
+		};
+
+		funnel {
+			/*
+			 * non-configurable funnel don't show up on the AMBA
+			 * bus.  As such no need to add "arm,primecell".
+			 */
+			compatible = "arm,coresight-static-funnel";
+
+			in-ports {
+				#address-cells = <1>;
+				#size-cells = <0>;
+
+				port at 0 {
+					reg = <0>;
+
+					ca_funnel_in_port0: endpoint {
+						remote-endpoint = <&etm0_out_port>;
+					};
+				};
+
+				port at 1 {
+					reg = <1>;
+
+					ca_funnel_in_port1: endpoint {
+						remote-endpoint = <&etm1_out_port>;
+					};
+				};
+
+				port at 2 {
+					reg = <2>;
+
+					ca_funnel_in_port2: endpoint {
+						remote-endpoint = <&etm2_out_port>;
+					};
+				};
+
+				port at 3 {
+					reg = <3>;
+
+					ca_funnel_in_port3: endpoint {
+						remote-endpoint = <&etm3_out_port>;
+					};
+				};
+			};
+
+			out-ports {
+				port {
+					ca_funnel_out_port0: endpoint {
+						remote-endpoint = <&hugo_funnel_in_port0>;
+					};
+				};
+			};
+		};
+
+		funnel at 28c03000 {
+			compatible = "arm,coresight-dynamic-funnel", "arm,primecell";
+			reg = <0x28c03000 0x1000>;
+			clocks = <&clk IMX8MQ_CLK_MAIN_AXI>;
+			clock-names = "apb_pclk";
+
+			in-ports {
+				#address-cells = <1>;
+				#size-cells = <0>;
+
+				port at 0 {
+					reg = <0>;
+
+					hugo_funnel_in_port0: endpoint {
+						remote-endpoint = <&ca_funnel_out_port0>;
+					};
+				};
+
+				port at 1 {
+					reg = <1>;
+
+					hugo_funnel_in_port1: endpoint {
+					/* M4 input */
+					};
+				};
+				/* the other input ports are not connect to anything */
+			};
+
+			out-ports {
+				port {
+					hugo_funnel_out_port0: endpoint {
+						remote-endpoint = <&etf_in_port>;
+					};
+				};
+			};
+		};
+
+		etf at 28c04000 {
+			compatible = "arm,coresight-tmc", "arm,primecell";
+			reg = <0x28c04000 0x1000>;
+			clocks = <&clk IMX8MQ_CLK_MAIN_AXI>;
+			clock-names = "apb_pclk";
+
+			in-ports {
+				port {
+					etf_in_port: endpoint {
+						remote-endpoint = <&hugo_funnel_out_port0>;
+					};
+				};
+			};
+
+			out-ports {
+				port {
+					etf_out_port: endpoint {
+						remote-endpoint = <&etr_in_port>;
+					};
+				};
+			};
+		};
+
+		etr at 28c06000 {
+			compatible = "arm,coresight-tmc", "arm,primecell";
+			reg = <0x28c06000 0x1000>;
+			clocks = <&clk IMX8MQ_CLK_MAIN_AXI>;
+			clock-names = "apb_pclk";
+
+			in-ports {
+				port {
+					etr_in_port: endpoint {
+						remote-endpoint = <&etf_out_port>;
+					};
+				};
+			};
+		};
+
 		aips1: bus at 30000000 { /* AIPS1 */
 			compatible = "fsl,aips-bus", "simple-bus";
 			reg = <0x30000000 0x400000>;
-- 
2.34.1