Linux kernel and device drivers for NXP i.MX platforms
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From: "Peng Fan (OSS)" <peng.fan@oss.nxp.com>
To: Rob Herring <robh@kernel.org>,
	Krzysztof Kozlowski <krzk+dt@kernel.org>,
	 Conor Dooley <conor+dt@kernel.org>, Frank Li <Frank.Li@nxp.com>,
	 Sascha Hauer <s.hauer@pengutronix.de>,
	 Pengutronix Kernel Team <kernel@pengutronix.de>,
	 Fabio Estevam <festevam@gmail.com>,
	"A.s. Dong" <aisheng.dong@nxp.com>
Cc: devicetree@vger.kernel.org, imx@lists.linux.dev,
	 linux-arm-kernel@lists.infradead.org,
	linux-kernel@vger.kernel.org,  Peng Fan <peng.fan@nxp.com>
Subject: [PATCH 2/2] ARM: dts: imx7ulp: Add CPU clock and OPP table support
Date: Thu, 26 Feb 2026 19:04:16 +0800	[thread overview]
Message-ID: <20260226-imx7ulp-v1-2-3fd611ceb346@nxp.com> (raw)
In-Reply-To: <20260226-imx7ulp-v1-0-3fd611ceb346@nxp.com>

From: Peng Fan <peng.fan@nxp.com>

Add missing CPU clock definitions and operating-points-v2 table for the
Cortex-A7 on i.MX7ULP to enable proper CPU frequency scaling and
integration with the cpufreq/OPP frameworks.

Signed-off-by: Peng Fan <peng.fan@nxp.com>
---
 arch/arm/boot/dts/nxp/imx/imx7ulp.dtsi | 28 ++++++++++++++++++++++++++++
 1 file changed, 28 insertions(+)

diff --git a/arch/arm/boot/dts/nxp/imx/imx7ulp.dtsi b/arch/arm/boot/dts/nxp/imx/imx7ulp.dtsi
index 880b9a4f32b0846a773dbf9ad30715c84ac2fda6..1355feda1aa72d88dcf56033dfdeaae631c108f8 100644
--- a/arch/arm/boot/dts/nxp/imx/imx7ulp.dtsi
+++ b/arch/arm/boot/dts/nxp/imx/imx7ulp.dtsi
@@ -41,6 +41,34 @@ cpu0: cpu@f00 {
 			compatible = "arm,cortex-a7";
 			device_type = "cpu";
 			reg = <0xf00>;
+			clocks = <&smc1 IMX7ULP_CLK_ARM>,
+				 <&scg1 IMX7ULP_CLK_CORE>,
+				 <&scg1 IMX7ULP_CLK_SYS_SEL>,
+				 <&scg1 IMX7ULP_CLK_HSRUN_CORE>,
+				 <&scg1 IMX7ULP_CLK_HSRUN_SYS_SEL>,
+				 <&scg1 IMX7ULP_CLK_FIRC>;
+			clock-names = "arm", "core", "scs_sel",
+				      "hsrun_core", "hsrun_scs_sel",
+				      "firc";
+			operating-points-v2 = <&cpu0_opp_table>;
+		};
+	};
+
+	cpu0_opp_table: opp-table {
+		compatible = "operating-points-v2";
+		opp-shared;
+
+		opp-500210000 {
+			opp-hz = /bits/ 64 <500210000>;
+			opp-microvolt = <1025000>;
+			clock-latency-ns = <150000>;
+			opp-suspend;
+		};
+
+		opp-720000000 {
+			opp-hz = /bits/ 64 <720000000>;
+			opp-microvolt = <1125000>;
+			clock-latency-ns = <150000>;
 		};
 	};
 

-- 
2.37.1


      parent reply	other threads:[~2026-02-26 11:03 UTC|newest]

Thread overview: 5+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2026-02-26 11:04 [PATCH 0/2] ARM: dts: Add CPU clock and OPP table for i.MX7ULP Peng Fan (OSS)
2026-02-26 11:04 ` [PATCH 1/2] dt-bindings: fsl: fsl,imx7ulp-smc1: Add #clock-cells Peng Fan (OSS)
2026-02-26 18:32   ` Conor Dooley
2026-02-27  1:11     ` Peng Fan
2026-02-26 11:04 ` Peng Fan (OSS) [this message]

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