linux-kernel - [PATCH v1 4/4] arm64: dts: imx93: Add CPU thermal zone

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Message-Id: <20230105101748.6714-5-alice.guo@oss.nxp.com>
Date:   Thu,  5 Jan 2023 18:17:48 +0800
From:   "Alice Guo (OSS)" <alice.guo@....nxp.com>
To:     rafael@...nel.org, daniel.lezcano@...aro.org, amitk@...nel.org,
        rui.zhang@...el.com, robh+dt@...nel.org,
        krzysztof.kozlowski+dt@...aro.org, shawnguo@...nel.org,
        s.hauer@...gutronix.de, festevam@...il.com
Cc:     linux-pm@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org, devicetree@...r.kernel.org,
        linux-imx@....com
Subject: [PATCH v1 4/4] arm64: dts: imx93: Add CPU thermal zone

From: Alice Guo <alice.guo@....com>

Add CPU thermal zone and attach it to the TMU which monitors the CPU
temperature.

Signed-off-by: Alice Guo <alice.guo@....com>
Reviewed-by: Jacky Bai <ping.bai@....com>
Reviewed-by: Ye Li <ye.li@....com>
Signed-off-by: Dong Aisheng <aisheng.dong@....com>
---
 arch/arm64/boot/dts/freescale/imx93.dtsi | 48 ++++++++++++++++++++++++
 1 file changed, 48 insertions(+)

diff --git a/arch/arm64/boot/dts/freescale/imx93.dtsi b/arch/arm64/boot/dts/freescale/imx93.dtsi
index 6808321ed809..60306f3c5e7f 100644
--- a/arch/arm64/boot/dts/freescale/imx93.dtsi
+++ b/arch/arm64/boot/dts/freescale/imx93.dtsi
@@ -8,6 +8,7 @@
 #include <dt-bindings/input/input.h>
 #include <dt-bindings/interrupt-controller/arm-gic.h>
 #include <dt-bindings/power/fsl,imx93-power.h>
+#include <dt-bindings/thermal/thermal.h>
 
 #include "imx93-pinfunc.h"
 
@@ -116,6 +117,38 @@
 		interrupt-parent = <&gic>;
 	};
 
+	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>,
+						<&A55_1 THERMAL_NO_LIMIT THERMAL_NO_LIMIT>;
+				};
+			};
+		};
+	};
+
 	soc@0 {
 		compatible = "simple-bus";
 		#address-cells = <1>;
@@ -280,6 +313,21 @@
 				compatible = "fsl,imx93-anatop", "syscon";
 				reg = <0x44480000 0x10000>;
 			};
+
+			tmu: tmu@...82000 {
+				compatible = "fsl,imx93-tmu";
+				reg = <0x44482000 0x1000>;
+				clocks = <&clk IMX93_CLK_TMC_GATE>;
+				little-endian;
+				fsl,tmu-calibration = <0x0000000e 0x800000da
+						       0x00000029 0x800000e9
+						       0x00000056 0x80000102
+						       0x000000a2 0x8000012a
+						       0x00000116 0x80000166
+						       0x00000195 0x800001a7
+						       0x000001b2 0x800001b6>;
+				#thermal-sensor-cells = <1>;
+			};
 		};
 
 		aips2: bus@...00000 {
-- 
2.17.1