linux-kernel - [PATCH v3 6/7] arm64: dts: ti: j7200: Add VTM node

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Message-ID: <20230405215328.3755561-7-bb@ti.com>
Date:   Wed, 5 Apr 2023 16:53:27 -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 6/7] arm64: dts: ti: j7200: Add VTM node

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

VTM stands for Voltage Thermal Management. Add the thermal zones.
Three sensors mapping to 3 thermal zones. MCU, MPU & Main 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-j7200-mcu-wakeup.dtsi      |  9 ++++
 arch/arm64/boot/dts/ti/k3-j7200-thermal.dtsi  | 47 +++++++++++++++++++
 arch/arm64/boot/dts/ti/k3-j7200.dtsi          |  2 +
 3 files changed, 58 insertions(+)
 create mode 100644 arch/arm64/boot/dts/ti/k3-j7200-thermal.dtsi

diff --git a/arch/arm64/boot/dts/ti/k3-j7200-mcu-wakeup.dtsi b/arch/arm64/boot/dts/ti/k3-j7200-mcu-wakeup.dtsi
index 331b4e482e41c..e2ca7cc35119c 100644
--- a/arch/arm64/boot/dts/ti/k3-j7200-mcu-wakeup.dtsi
+++ b/arch/arm64/boot/dts/ti/k3-j7200-mcu-wakeup.dtsi
@@ -459,4 +459,13 @@ rng: rng@...10000 {
 			status = "disabled"; /* Used by OP-TEE */
 		};
 	};
+
+	wkup_vtm0: temperature-sensor@...40000 {
+		compatible = "ti,j7200-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-j7200-thermal.dtsi b/arch/arm64/boot/dts/ti/k3-j7200-thermal.dtsi
new file mode 100644
index 0000000000000..e7e3a643a6f0c
--- /dev/null
+++ b/arch/arm64/boot/dts/ti/k3-j7200-thermal.dtsi
@@ -0,0 +1,47 @@
+// SPDX-License-Identifier: GPL-2.0
+
+#include <dt-bindings/thermal/thermal.h>
+
+thermal_zones: thermal-zones {
+	mcu_thermal: mcu-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";
+			};
+		};
+	};
+
+	main_thermal: main-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";
+			};
+		};
+	};
+};
diff --git a/arch/arm64/boot/dts/ti/k3-j7200.dtsi b/arch/arm64/boot/dts/ti/k3-j7200.dtsi
index bbe380c72a7ec..47befaffad436 100644
--- a/arch/arm64/boot/dts/ti/k3-j7200.dtsi
+++ b/arch/arm64/boot/dts/ti/k3-j7200.dtsi
@@ -170,6 +170,8 @@ cbass_mcu_wakeup: bus@...80000 {
 				 <0x07 0x00000000 0x07 0x00000000 0x01 0x00000000>; /* FSS OSPI1 data region 3 */
 		};
 	};
+
+	#include "k3-j7200-thermal.dtsi"
 };
 
 /* Now include the peripherals for each bus segments */
-- 
2.40.0