linux-kernel - [PATCH v5 2/4] arm64: dts: ti: j721e: Add VTM node

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Date:   Tue, 12 Apr 2022 15:44:07 +0530
From:   Keerthy <j-keerthy@...com>
To:     <robh+dt@...nel.org>, <daniel.lezcano@...aro.org>,
        <rui.zhang@...el.com>, <amitk@...nel.org>, <kristo@...nel.org>
CC:     <j-keerthy@...com>, <linux-pm@...r.kernel.org>, <vigneshr@...com>,
        <devicetree@...r.kernel.org>, <linux-kernel@...r.kernel.org>
Subject: [PATCH v5 2/4] arm64: dts: ti: j721e: Add VTM node

VTM stands for Voltage Thermal Management

Signed-off-by: Keerthy <j-keerthy@...com>
---
 .../boot/dts/ti/k3-j721e-mcu-wakeup.dtsi      |  9 +++
 arch/arm64/boot/dts/ti/k3-j721e-thermal.dtsi  | 73 +++++++++++++++++++
 arch/arm64/boot/dts/ti/k3-j721e.dtsi          |  4 +
 3 files changed, 86 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 b4972dfb7da8..6290f563b8e7 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 @@
 		interrupt-names = "int0", "int1";
 		bosch,mram-cfg = <0x0 128 64 64 64 64 32 32>;
 	};
+
+	wkup_vtm0: wkup_vtm0@...40000 {
+		compatible = "ti,j721e-vtm";
+		reg = <0x0 0x42040000 0x0 0x350>,
+			<0x0 0x42050000 0x0 0x350>,
+			<0x0 0x43000300 0x0 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 000000000000..e922042f356f
--- /dev/null
+++ b/arch/arm64/boot/dts/ti/k3-j721e-thermal.dtsi
@@ -0,0 +1,73 @@
+// SPDX-License-Identifier: GPL-2.0
+
+#include <dt-bindings/thermal/thermal.h>
+
+wkup_thermal: wkup_thermal {
+	polling-delay-passive = <250>; /* milliseconds */
+	polling-delay = <500>; /* milliseconds */
+	thermal-sensors = <&wkup_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 = <&wkup_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 = <&wkup_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 = <&wkup_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 = <&wkup_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 0e23886c9fd1..6979863eb500 100644
--- a/arch/arm64/boot/dts/ti/k3-j721e.dtsi
+++ b/arch/arm64/boot/dts/ti/k3-j721e.dtsi
@@ -181,6 +181,10 @@
 				 <0x07 0x00000000 0x07 0x00000000 0x01 0x00000000>; /* FSS OSPI1 data region 3*/
 		};
 	};
+
+	thermal_zones: thermal-zones {
+		#include "k3-j721e-thermal.dtsi"
+	};
 };
 
 /* Now include the peripherals for each bus segments */
-- 
2.17.1