linux-kernel - [PATCH v3 7/7] arm64: dts: ti: j721s2: Add VTM node

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Message-ID: <20230405215328.3755561-8-bb@ti.com>
Date:   Wed, 5 Apr 2023 16:53:28 -0500
From:   Bryan Brattlof <bb@...com>
To:     Nishanth Menon <nm@...com>, Vignesh Raghavendra <vigneshr@...com>,
        Tero Kristo <kristo@...nel.org>
CC:     Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Keerthy <j-keerthy@...com>,
        Device Tree Mailing List <devicetree@...r.kernel.org>,
        ARM Linux Mailing List <linux-arm-kernel@...ts.infradead.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        Bryan Brattlof <bb@...com>
Subject: [PATCH v3 7/7] arm64: dts: ti: j721s2: Add VTM node

From: Keerthy <j-keerthy@...com>

VTM stands for Voltage Thermal Management. Add the thermal zones.
Six sensors mapping to six thermal zones. Main0, Main1, Main2, Main3,
WKUP1 & WKUP2 domains respectively.

Signed-off-by: Keerthy <j-keerthy@...com>
[bb@...com: rebased on v6.3-rc1]
Signed-off-by: Bryan Brattlof <bb@...com>
---
 .../boot/dts/ti/k3-j721s2-mcu-wakeup.dtsi     |   9 ++
 arch/arm64/boot/dts/ti/k3-j721s2-thermal.dtsi | 101 ++++++++++++++++++
 arch/arm64/boot/dts/ti/k3-j721s2.dtsi         |   4 +
 3 files changed, 114 insertions(+)
 create mode 100644 arch/arm64/boot/dts/ti/k3-j721s2-thermal.dtsi

diff --git a/arch/arm64/boot/dts/ti/k3-j721s2-mcu-wakeup.dtsi b/arch/arm64/boot/dts/ti/k3-j721s2-mcu-wakeup.dtsi
index a353705a7463e..a178368224f44 100644
--- a/arch/arm64/boot/dts/ti/k3-j721s2-mcu-wakeup.dtsi
+++ b/arch/arm64/boot/dts/ti/k3-j721s2-mcu-wakeup.dtsi
@@ -379,4 +379,13 @@ adc {
 			compatible = "ti,am3359-adc";
 		};
 	};
+
+	wkup_vtm0: temperature-sensor@...40000 {
+		compatible = "ti,j7200-vtm";
+		reg = <0x0 0x42040000 0x0 0x350>,
+		      <0x0 0x42050000 0x0 0x350>,
+		      <0x0 0x43000300 0x0 0x10>;
+		power-domains = <&k3_pds 154 TI_SCI_PD_SHARED>;
+		#thermal-sensor-cells = <1>;
+	};
 };
diff --git a/arch/arm64/boot/dts/ti/k3-j721s2-thermal.dtsi b/arch/arm64/boot/dts/ti/k3-j721s2-thermal.dtsi
new file mode 100644
index 0000000000000..f7b1a15b8fa0a
--- /dev/null
+++ b/arch/arm64/boot/dts/ti/k3-j721s2-thermal.dtsi
@@ -0,0 +1,101 @@
+// SPDX-License-Identifier: GPL-2.0
+
+#include <dt-bindings/thermal/thermal.h>
+
+wkup0_thermal: wkup0-thermal {
+	polling-delay-passive = <250>; /* milliseconds */
+	polling-delay = <500>; /* milliseconds */
+	thermal-sensors = <&wkup_vtm0 0>;
+
+	trips {
+		wkup0_crit: wkup0-crit {
+			temperature = <125000>; /* milliCelsius */
+			hysteresis = <2000>; /* milliCelsius */
+			type = "critical";
+		};
+	};
+};
+
+wkup1_thermal: wkup1-thermal {
+	polling-delay-passive = <250>; /* milliseconds */
+	polling-delay = <500>; /* milliseconds */
+	thermal-sensors = <&wkup_vtm0 1>;
+
+	trips {
+		wkup1_crit: wkup1-crit {
+			temperature = <125000>; /* milliCelsius */
+			hysteresis = <2000>; /* milliCelsius */
+			type = "critical";
+		};
+	};
+};
+
+main0_thermal: main0-thermal {
+	polling-delay-passive = <250>; /* milliseconds */
+	polling-delay = <500>; /* milliseconds */
+	thermal-sensors = <&wkup_vtm0 2>;
+
+	trips {
+		main0_crit: main0-crit {
+			temperature = <125000>; /* milliCelsius */
+			hysteresis = <2000>; /* milliCelsius */
+			type = "critical";
+		};
+	};
+};
+
+main1_thermal: main1-thermal {
+	polling-delay-passive = <250>; /* milliseconds */
+	polling-delay = <500>; /* milliseconds */
+	thermal-sensors = <&wkup_vtm0 3>;
+
+	trips {
+		main1_crit: main1-crit {
+			temperature = <125000>; /* milliCelsius */
+			hysteresis = <2000>; /* milliCelsius */
+			type = "critical";
+		};
+	};
+};
+
+main2_thermal: main2-thermal {
+	polling-delay-passive = <250>; /* milliseconds */
+	polling-delay = <500>; /* milliseconds */
+	thermal-sensors = <&wkup_vtm0 4>;
+
+	trips {
+		main2_crit: main2-crit {
+			temperature = <125000>; /* milliCelsius */
+			hysteresis = <2000>; /* milliCelsius */
+			type = "critical";
+		};
+	};
+};
+
+main3_thermal: main3-thermal {
+	polling-delay-passive = <250>; /* milliseconds */
+	polling-delay = <500>; /* milliseconds */
+	thermal-sensors = <&wkup_vtm0 5>;
+
+	trips {
+		main3_crit: main3-crit {
+			temperature = <125000>; /* milliCelsius */
+			hysteresis = <2000>; /* milliCelsius */
+			type = "critical";
+		};
+	};
+};
+
+main4_thermal: main4-thermal {
+	polling-delay-passive = <250>; /* milliseconds */
+	polling-delay = <500>; /* milliseconds */
+	thermal-sensors = <&wkup_vtm0 6>;
+
+	trips {
+		main4_crit: main4-crit {
+			temperature = <125000>; /* milliCelsius */
+			hysteresis = <2000>; /* milliCelsius */
+			type = "critical";
+		};
+	};
+};
diff --git a/arch/arm64/boot/dts/ti/k3-j721s2.dtsi b/arch/arm64/boot/dts/ti/k3-j721s2.dtsi
index 376924726f1f3..4aab2daf85fc7 100644
--- a/arch/arm64/boot/dts/ti/k3-j721s2.dtsi
+++ b/arch/arm64/boot/dts/ti/k3-j721s2.dtsi
@@ -163,6 +163,10 @@ cbass_mcu_wakeup: bus@...80000 {
 		};
 
 	};
+
+	thermal_zones: thermal-zones {
+		#include "k3-j721s2-thermal.dtsi"
+	};
 };
 
 /* Now include peripherals from each bus segment */
-- 
2.40.0