linux-kernel - Re: [PATCH 06/13] arm64: dts: imx95: Add coresight nodes

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Message-ID: <aJ9iO+iJL6aZBz0t@lizhi-Precision-Tower-5810>
Date: Fri, 15 Aug 2025 12:37:15 -0400
From: Frank Li <Frank.li@....com>
To: Peng Fan <peng.fan@....com>
Cc: Rob Herring <robh@...nel.org>, Krzysztof Kozlowski <krzk+dt@...nel.org>,
	Conor Dooley <conor+dt@...nel.org>, Shawn Guo <shawnguo@...nel.org>,
	Sascha Hauer <s.hauer@...gutronix.de>,
	Pengutronix Kernel Team <kernel@...gutronix.de>,
	Fabio Estevam <festevam@...il.com>, devicetree@...r.kernel.org,
	imx@...ts.linux.dev, linux-arm-kernel@...ts.infradead.org,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH 06/13] arm64: dts: imx95: Add coresight nodes

On Fri, Aug 15, 2025 at 05:03:52PM +0800, Peng Fan wrote:
> Add etf, etm, etr, funnel nodes for coresight.
>
> Signed-off-by: Peng Fan <peng.fan@....com>
> ---
>  arch/arm64/boot/dts/freescale/imx95.dtsi | 104 +++++++++++++++++++++++++++++++
>  1 file changed, 104 insertions(+)
>
> diff --git a/arch/arm64/boot/dts/freescale/imx95.dtsi b/arch/arm64/boot/dts/freescale/imx95.dtsi
> index adc63448aa15b148ca0eb8499ff5bc217fe8208e..2fbdd9c7ca099ba6971e4f6914be680a5b96da36 100644
> --- a/arch/arm64/boot/dts/freescale/imx95.dtsi
> +++ b/arch/arm64/boot/dts/freescale/imx95.dtsi
> @@ -492,6 +492,110 @@ soc {
>  		#size-cells = <2>;
>  		ranges;
>
> +		etm0: etm@...40000 {
> +			compatible = "arm,coresight-etm4x", "arm,primecell";
> +			reg = <0x0 0x40840000 0x0 0x10000>;
> +			arm,primecell-periphid = <0xbb95d>;
> +			cpu = <&A55_0>;
> +			clocks = <&scmi_clk IMX95_CLK_A55PERIPH>;
> +			clock-names = "apb_pclk";
> +			status = "disabled";
> +
> +			out-ports {
> +				port {
> +					etm0_out_port: endpoint {
> +						remote-endpoint = <&ca_funnel_in_port0>;
> +					};
> +				};
> +			};
> +		};
> +
> +		funnel0: 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";
> +			status = "disabled";
> +
> +			in-ports {
> +				port {
> +					ca_funnel_in_port0: endpoint {
> +						remote-endpoint = <&etm0_out_port>;
> +					};
> +				};
> +			};
> +
> +			out-ports {
> +				port {
> +					ca_funnel_out_port0: endpoint {
> +						remote-endpoint = <&hugo_funnel_in_port0>;
> +					};
> +				};
> +			};
> +		};
> +
> +		funnel1: funnel_sys {

node name use -, funnel-sys

Frank
> +			compatible = "arm,coresight-static-funnel";
> +			status = "disabled";
> +
> +			in-ports {
> +				port {
> +					hugo_funnel_in_port0: endpoint {
> +						remote-endpoint = <&ca_funnel_out_port0>;
> +					};
> +				};
> +			};
> +
> +			out-ports {
> +				port {
> +					hugo_funnel_out_port0: endpoint {
> +						remote-endpoint = <&etf_in_port>;
> +					};
> +				};
> +			};
> +		};
> +
> +		etf: etf@...30000 {
> +			compatible = "arm,coresight-tmc", "arm,primecell";
> +			reg = <0x0 0x41030000 0x0 0x1000>;
> +			clocks = <&scmi_clk IMX95_CLK_A55PERIPH>;
> +			clock-names = "apb_pclk";
> +			status = "disabled";
> +
> +			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: etr@...40000 {
> +			compatible = "arm,coresight-tmc", "arm,primecell";
> +			reg = <0x0 0x41040000 0x0 0x1000>;
> +			clocks = <&scmi_clk IMX95_CLK_A55PERIPH>;
> +			clock-names = "apb_pclk";
> +			status = "disabled";
> +
> +			in-ports {
> +				port {
> +					etr_in_port: endpoint {
> +						remote-endpoint = <&etf_out_port>;
> +					};
> +				};
> +			};
> +		};
> +
>  		aips2: bus@...00000 {
>  			compatible = "fsl,aips-bus", "simple-bus";
>  			reg = <0x0 0x42000000 0x0 0x800000>;
>
> --
> 2.37.1
>