linux-kernel - [PATCH v2 09/11] arm64: dts: ti: k3-j721e-mcu-wakeup: add VTM node

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Date:   Tue, 25 Oct 2022 14:15:13 -0500
From:   Bryan Brattlof <bb@...com>
To:     "Rafael J. Wysocki" <rafael@...nel.org>,
        Daniel Lezcano <daniel.lezcano@...aro.org>,
        Amit Kucheria <amitk@...nel.org>,
        Zhang Rui <rui.zhang@...el.com>,
        Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Nishanth Menon <nm@...com>,
        Vignesh Raghavendra <vigneshr@...com>,
        Tero Kristo <kristo@...nel.org>
CC:     Keerthy <j-keerthy@...com>, Linux PM <linux-pm@...r.kernel.org>,
        Device Trees <devicetree@...r.kernel.org>,
        LKML <linux-kernel@...r.kernel.org>,
        LKML ARM <linux-arm-kernel@...ts.infradead.org>,
        Bryan Brattlof <bb@...com>
Subject: [PATCH v2 09/11] arm64: dts: ti: k3-j721e-mcu-wakeup: add VTM node

The j721e supports a single Voltage and Thermal Management (VTM) module
located in the wakeup domain with five associated temperature monitors
located in various hot spots on the die.

Signed-off-by: Bryan Brattlof <bb@...com>
---
 .../boot/dts/ti/k3-j721e-mcu-wakeup.dtsi      |  9 +++
 arch/arm64/boot/dts/ti/k3-j721e-thermal.dtsi  | 75 +++++++++++++++++++
 arch/arm64/boot/dts/ti/k3-j721e.dtsi          |  3 +
 3 files changed, 87 insertions(+)
 create mode 100644 arch/arm64/boot/dts/ti/k3-j721e-thermal.dtsi

diff --git a/arch/arm64/boot/dts/ti/k3-j721e-mcu-wakeup.dtsi b/arch/arm64/boot/dts/ti/k3-j721e-mcu-wakeup.dtsi
index df08724bbf1c5..9a09f66c51c01 100644
--- a/arch/arm64/boot/dts/ti/k3-j721e-mcu-wakeup.dtsi
+++ b/arch/arm64/boot/dts/ti/k3-j721e-mcu-wakeup.dtsi
@@ -418,4 +418,13 @@ mcu_mcan1: can@...68000 {
 		interrupt-names = "int0", "int1";
 		bosch,mram-cfg = <0x0 128 64 64 64 64 32 32>;
 	};
+
+	vtm0: temperature-sensor@...40000 {
+		compatible = "ti,j721e-vtm";
+		reg = <0x00 0x42040000 0x00 0x350>,
+		      <0x00 0x42050000 0x00 0x350>,
+		      <0x00 0x43000300 0x00 0x10>;
+		power-domains = <&k3_pds 154 TI_SCI_PD_EXCLUSIVE>;
+		#thermal-sensor-cells = <1>;
+	};
 };
diff --git a/arch/arm64/boot/dts/ti/k3-j721e-thermal.dtsi b/arch/arm64/boot/dts/ti/k3-j721e-thermal.dtsi
new file mode 100644
index 0000000000000..79641927a9092
--- /dev/null
+++ b/arch/arm64/boot/dts/ti/k3-j721e-thermal.dtsi
@@ -0,0 +1,75 @@
+// SPDX-License-Identifier: GPL-2.0
+
+#include <dt-bindings/thermal/thermal.h>
+
+thermal_zones: thermal-zones {
+	wkup_thermal: wkup-thermal {
+		polling-delay-passive = <250>;	/* milliSeconds */
+		polling-delay = <500>;		/* milliSeconds */
+		thermal-sensors = <&vtm0 0>;
+
+		trips {
+			wkup_crit: wkup-crit {
+				temperature = <125000>;	/* milliCelsius */
+				hysteresis = <2000>;	/* milliCelsius */
+				type = "critical";
+			};
+		};
+	};
+
+	mpu_thermal: mpu-thermal {
+		polling-delay-passive = <250>;	/* milliSeconds */
+		polling-delay = <500>;		/* milliSeconds */
+		thermal-sensors = <&vtm0 1>;
+
+		trips {
+			mpu_crit: mpu-crit {
+				temperature = <125000>;	/* milliCelsius */
+				hysteresis = <2000>;	/* milliCelsius */
+				type = "critical";
+			};
+		};
+	};
+
+	c7x_thermal: c7x-thermal {
+		polling-delay-passive = <250>;	/* milliSeconds */
+		polling-delay = <500>;		/* milliSeconds */
+		thermal-sensors = <&vtm0 2>;
+
+		trips {
+			c7x_crit: c7x-crit {
+				temperature = <125000>;	/* milliCelsius */
+				hysteresis = <2000>;	/* milliCelsius */
+				type = "critical";
+			};
+		};
+	};
+
+	gpu_thermal: gpu-thermal {
+		polling-delay-passive = <250>;	/* milliSeconds */
+		polling-delay = <500>;		/* milliSeconds */
+		thermal-sensors = <&vtm0 3>;
+
+		trips {
+			gpu_crit: gpu-crit {
+				temperature = <125000>; /* milliCelsius */
+				hysteresis = <2000>;	/* milliCelsius */
+				type = "critical";
+			};
+		};
+	};
+
+	r5f_thermal: r5f-thermal {
+		polling-delay-passive = <250>;	/* milliSeconds */
+		polling-delay = <500>;		/* milliSeconds */
+		thermal-sensors = <&vtm0 4>;
+
+		trips {
+			r5f_crit: r5f-crit {
+				temperature = <125000>;	/* milliCelsius */
+				hysteresis = <2000>;	/* milliCelsius */
+				type = "critical";
+			};
+		};
+	};
+};
diff --git a/arch/arm64/boot/dts/ti/k3-j721e.dtsi b/arch/arm64/boot/dts/ti/k3-j721e.dtsi
index 0e23886c9fd1d..cfab10e2455c4 100644
--- a/arch/arm64/boot/dts/ti/k3-j721e.dtsi
+++ b/arch/arm64/boot/dts/ti/k3-j721e.dtsi
@@ -181,6 +181,9 @@ cbass_mcu_wakeup: bus@...80000 {
 				 <0x07 0x00000000 0x07 0x00000000 0x01 0x00000000>; /* FSS OSPI1 data region 3*/
 		};
 	};
+
+	#include "k3-j721e-thermal.dtsi"
+
 };
 
 /* Now include the peripherals for each bus segments */
-- 
2.38.1