linux-kernel - [PATCH v7 3/3] arm64: dts: imx91: Add thermal-sensor and thermal-zone support

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [day] [month] [year] [list]

Message-Id: <20251020-imx91tmu-v7-3-48d7d9f25055@nxp.com>
Date: Mon, 20 Oct 2025 15:00:42 -0400
From: Frank Li <Frank.Li@....com>
To: "Rafael J. Wysocki" <rafael@...nel.org>, 
 Daniel Lezcano <daniel.lezcano@...aro.org>, Zhang Rui <rui.zhang@...el.com>, 
 Lukasz Luba <lukasz.luba@....com>, 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>, Pengfei Li <pengfei.li_1@....com>, 
 Marco Felsch <m.felsch@...gutronix.de>
Cc: linux-pm@...r.kernel.org, devicetree@...r.kernel.org, 
 imx@...ts.linux.dev, linux-arm-kernel@...ts.infradead.org, 
 linux-kernel@...r.kernel.org, ye.li@....com, joy.zou@....com, 
 Frank Li <Frank.Li@....com>
Subject: [PATCH v7 3/3] arm64: dts: imx91: Add thermal-sensor and
 thermal-zone support

Add thermal-sensor and thermal-zone support.

Signed-off-by: Frank Li <Frank.Li@....com>
---
changes in v7
- new patch
---
 arch/arm64/boot/dts/freescale/imx91.dtsi | 58 ++++++++++++++++++++++++++++++++
 1 file changed, 58 insertions(+)

diff --git a/arch/arm64/boot/dts/freescale/imx91.dtsi b/arch/arm64/boot/dts/freescale/imx91.dtsi
index 4d8300b2a7bca33bd0613db9e79d2fba6b40c052..f075592bfc01f1eb94d2a2bd8eea907cc2aed090 100644
--- a/arch/arm64/boot/dts/freescale/imx91.dtsi
+++ b/arch/arm64/boot/dts/freescale/imx91.dtsi
@@ -6,6 +6,54 @@
 #include "imx91-pinfunc.h"
 #include "imx91_93_common.dtsi"

+/{
+	thermal-zones {
+		cpu-thermal {
+			polling-delay-passive = <250>;
+			polling-delay = <2000>;
+			thermal-sensors = <&tmu 0>;
+
+			trips {
+				cpu_alert: cpu-alert {
+					temperature = <80000>;
+					hysteresis = <2000>;
+					type = "passive";
+				};
+
+				cpu_crit: cpu-crit {
+					temperature = <90000>;
+					hysteresis = <2000>;
+					type = "critical";
+				};
+			};
+
+			cooling-maps {
+				map0 {
+					trip = <&cpu_alert>;
+					cooling-device =
+						<&A55_0 THERMAL_NO_LIMIT THERMAL_NO_LIMIT>;
+				};
+			};
+		};
+	};
+};
+
+&aips1 {
+	tmu: thermal-sensor@...82000 {
+		compatible = "fsl,imx91-tmu";
+		reg = <0x44482000 0x1000>;
+		#thermal-sensor-cells = <0>;
+		clocks = <&clk IMX93_CLK_TMC_GATE>;
+		interrupt-parent = <&gic>;
+		interrupts = <GIC_SPI 83 IRQ_TYPE_LEVEL_HIGH>,
+			     <GIC_SPI 84 IRQ_TYPE_LEVEL_HIGH>,
+			     <GIC_SPI 85 IRQ_TYPE_LEVEL_HIGH>;
+		interrupt-names = "thr1", "thr2", "ready";
+		nvmem-cells = <&tmu_trim1>, <&tmu_trim2>;
+		nvmem-cell-names = "trim1", "trim2";
+	};
+};
+
 &clk {
 	compatible = "fsl,imx91-ccm";
 };
@@ -69,3 +117,13 @@ &media_blk_ctrl {
 	clock-names = "apb", "axi", "nic", "disp", "cam",
 		      "lcdif", "isi", "csi";
 };
+
+&ocotp {
+	tmu_trim1: tmu-trim@a0 {
+		reg = <0xa0 0x4>;
+	};
+
+	tmu_trim2: tmu-trim@a4 {
+		reg = <0xa4 0x4>;
+	};
+};

-- 
2.34.1