linux-kernel - [PATCH 02/13] arm64: dts: imx95: Add System Counter node

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Message-Id: <20250815-imx9-dts-v1-2-e609eb4e3105@nxp.com>
Date: Fri, 15 Aug 2025 17:03:48 +0800
From: Peng Fan <peng.fan@....com>
To: 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>, Frank Li <Frank.Li@....com>
Cc: devicetree@...r.kernel.org, imx@...ts.linux.dev, 
 linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org, 
 Peng Fan <peng.fan@....com>
Subject: [PATCH 02/13] arm64: dts: imx95: Add System Counter node

Add System Counter node to support cpuidle when arm generic timer stops

Signed-off-by: Peng Fan <peng.fan@....com>
---
 arch/arm64/boot/dts/freescale/imx95.dtsi | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/arch/arm64/boot/dts/freescale/imx95.dtsi b/arch/arm64/boot/dts/freescale/imx95.dtsi
index dbcc557d07f5b8a0ef27d68b7211b07d26fdb9bc..642dc4b7a4770be50960f53a73db965ea4374e24 100644
--- a/arch/arm64/boot/dts/freescale/imx95.dtsi
+++ b/arch/arm64/boot/dts/freescale/imx95.dtsi
@@ -1260,6 +1260,15 @@ mu1: mailbox@...20000 {
 				status = "disabled";
 			};
 
+			system_counter: timer@...90000 {
+				compatible = "nxp,imx95-sysctr-timer";
+				reg = <0x44290000 0x30000>;
+				interrupts = <GIC_SPI 72 IRQ_TYPE_LEVEL_HIGH>;
+				clocks = <&osc_24m>;
+				clock-names = "per";
+				nxp,no-divider;
+			};
+
 			tpm1: pwm@...10000 {
 				compatible = "fsl,imx7ulp-pwm";
 				reg = <0x44310000 0x1000>;

-- 
2.37.1