Merge tag 'thermal-v6.8-rc1' of...

Merge tag 'thermal-v6.8-rc1' of ssh://gitolite.kernel.org/pub/scm/linux/kernel/git/thermal/linux into thermal

Merge thermal control material for 6.8-rc1 from Daniel Lezcano:

"- Converted Mediatek Thermal to the json-schema (Rafał Miłecki)

 - Fixed DT bindings issue on Loongson (Binbin Zhou)

 - Fixed returning NULL instead of -ENODEV on Loogsoo (Binbin Zhou)

 - Added the DT binding for the tsens on SM8650 platform (Neil Armstrong)

 - Added a reboot on critical option feature (Fabio Estevam)

 - Made usage of DEFINE_SIMPLE_DEV_PM_OPS on AmLogic (Uwe Kleine-König)

 - Added the D1/T113s THS controller support on Sun8i (Maxim Kiselev)

 - Fixed example in the DT binding for QCom SPMI (Johan Hovold)

 - Fixed compilation warning for the tmon utility (Florian Eckert)

 - Added interrupt based configuration on Exynos along with a set of
   related cleanups (Mateusz Majewski)"

* tag 'thermal-v6.8-rc1' of ssh://gitolite.kernel.org/pub/scm/linux/kernel/git/thermal/linux: (24 commits)
  thermal/drivers/exynos: Use set_trips ops
  thermal/drivers/exynos: Use BIT wherever possible
  thermal/drivers/exynos: Split initialization of TMU and the thermal zone
  thermal/drivers/exynos: Stop using the threshold mechanism on Exynos 4210
  thermal/drivers/exynos: Simplify regulator (de)initialization
  thermal/drivers/exynos: Handle devm_regulator_get_optional return value correctly
  thermal/drivers/exynos: Wwitch from workqueue-driven interrupt handling to threaded interrupts
  thermal/drivers/exynos: Drop id field
  thermal/drivers/exynos: Remove an unnecessary field description
  tools/thermal/tmon: Fix compilation warning for wrong format
  dt-bindings: thermal: qcom-spmi-adc-tm5/hc: Clean up examples
  dt-bindings: thermal: qcom-spmi-adc-tm5/hc: Fix example node names
  thermal/drivers/sun8i: Add D1/T113s THS controller support
  dt-bindings: thermal: sun8i: Add binding for D1/T113s THS controller
  thermal: amlogic: Use DEFINE_SIMPLE_DEV_PM_OPS for PM functions
  thermal: amlogic: Make amlogic_thermal_disable() return void
  thermal/thermal_of: Allow rebooting after critical temp
  reboot: Introduce thermal_zone_device_critical_reboot()
  thermal/core: Prepare for introduction of thermal reboot
  dt-bindings: thermal-zones: Document critical-action
  ...

Documentation/devicetree/bindings/thermal/allwinner,sun8i-a83t-ths.yaml

@@ -16,6 +16,7 @@ properties:
       - allwinner,sun8i-a83t-ths
       - allwinner,sun8i-h3-ths
       - allwinner,sun8i-r40-ths
+      - allwinner,sun20i-d1-ths
       - allwinner,sun50i-a64-ths
       - allwinner,sun50i-a100-ths
       - allwinner,sun50i-h5-ths
@@ -61,6 +62,7 @@ allOf:
         compatible:
           contains:
             enum:
+              - allwinner,sun20i-d1-ths
               - allwinner,sun50i-a100-ths
               - allwinner,sun50i-h6-ths
 
@@ -84,7 +86,9 @@ allOf:
       properties:
         compatible:
           contains:
-            const: allwinner,sun8i-h3-ths
+            enum:
+              - allwinner,sun8i-h3-ths
+              - allwinner,sun20i-d1-ths
 
     then:
       properties:
@@ -103,6 +107,7 @@ allOf:
             enum:
               - allwinner,sun8i-h3-ths
               - allwinner,sun8i-r40-ths
+              - allwinner,sun20i-d1-ths
               - allwinner,sun50i-a64-ths
               - allwinner,sun50i-a100-ths
               - allwinner,sun50i-h5-ths

Documentation/devicetree/bindings/thermal/loongson,ls2k-thermal.yaml

@@ -10,6 +10,9 @@ maintainers:
   - zhanghongchen <zhanghongchen@loongson.cn>
   - Yinbo Zhu <zhuyinbo@loongson.cn>
 
+allOf:
+  - $ref: /schemas/thermal/thermal-sensor.yaml#
+
 properties:
   compatible:
     oneOf:
@@ -26,12 +29,16 @@ properties:
   interrupts:
     maxItems: 1
 
+  '#thermal-sensor-cells':
+    const: 1
+
 required:
   - compatible
   - reg
   - interrupts
+  - '#thermal-sensor-cells'
 
-additionalProperties: false
+unevaluatedProperties: false
 
 examples:
   - |
@@ -41,4 +48,5 @@ examples:
         reg = <0x1fe01500 0x30>;
         interrupt-parent = <&liointc0>;
         interrupts = <7 IRQ_TYPE_LEVEL_LOW>;
+        #thermal-sensor-cells = <1>;
     };

Documentation/devicetree/bindings/thermal/mediatek,thermal.yaml

+# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/thermal/mediatek,thermal.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Mediatek thermal controller for on-SoC temperatures
+
+maintainers:
+  - Sascha Hauer <s.hauer@pengutronix.de>
+
+description:
+  This device does not have its own ADC, instead it directly controls the AUXADC
+  via AHB bus accesses. For this reason it needs phandles to the AUXADC. Also it
+  controls a mux in the apmixedsys register space via AHB bus accesses, so a
+  phandle to the APMIXEDSYS is also needed.
+
+allOf:
+  - $ref: thermal-sensor.yaml#
+
+properties:
+  compatible:
+    enum:
+      - mediatek,mt2701-thermal
+      - mediatek,mt2712-thermal
+      - mediatek,mt7622-thermal
+      - mediatek,mt7981-thermal
+      - mediatek,mt7986-thermal
+      - mediatek,mt8173-thermal
+      - mediatek,mt8183-thermal
+      - mediatek,mt8365-thermal
+      - mediatek,mt8516-thermal
+
+  reg:
+    maxItems: 1
+
+  interrupts:
+    maxItems: 1
+
+  clocks:
+    items:
+      - description: Main clock needed for register access
+      - description: The AUXADC clock
+
+  clock-names:
+    items:
+      - const: therm
+      - const: auxadc
+
+  mediatek,auxadc:
+    $ref: /schemas/types.yaml#/definitions/phandle
+    description: A phandle to the AUXADC which the thermal controller uses
+
+  mediatek,apmixedsys:
+    $ref: /schemas/types.yaml#/definitions/phandle
+    description: A phandle to the APMIXEDSYS controller
+
+  resets:
+    description: Reset controller controlling the thermal controller
+
+  nvmem-cells:
+    items:
+      - description:
+          NVMEM cell with EEPROMA phandle to the calibration data provided by an
+          NVMEM device. If unspecified default values shall be used.
+
+  nvmem-cell-names:
+    items:
+      - const: calibration-data
+
+required:
+  - reg
+  - interrupts
+  - clocks
+  - clock-names
+  - mediatek,auxadc
+  - mediatek,apmixedsys
+
+unevaluatedProperties: false
+
+examples:
+  - |
+    #include <dt-bindings/interrupt-controller/irq.h>
+    #include <dt-bindings/clock/mt8173-clk.h>
+    #include <dt-bindings/reset/mt8173-resets.h>
+
+    thermal@1100b000 {
+        compatible = "mediatek,mt8173-thermal";
+        reg = <0x1100b000 0x1000>;
+        interrupts = <0 70 IRQ_TYPE_LEVEL_LOW>;
+        clocks = <&pericfg CLK_PERI_THERM>, <&pericfg CLK_PERI_AUXADC>;
+        clock-names = "therm", "auxadc";
+        resets = <&pericfg MT8173_PERI_THERM_SW_RST>;
+        mediatek,auxadc = <&auxadc>;
+        mediatek,apmixedsys = <&apmixedsys>;
+        nvmem-cells = <&thermal_calibration_data>;
+        nvmem-cell-names = "calibration-data";
+        #thermal-sensor-cells = <1>;
+    };

Documentation/devicetree/bindings/thermal/mediatek-thermal.txt

-* Mediatek Thermal
-
-This describes the device tree binding for the Mediatek thermal controller
-which measures the on-SoC temperatures. This device does not have its own ADC,
-instead it directly controls the AUXADC via AHB bus accesses. For this reason
-this device needs phandles to the AUXADC. Also it controls a mux in the
-apmixedsys register space via AHB bus accesses, so a phandle to the APMIXEDSYS
-is also needed.
-
-Required properties:
-- compatible:
-  - "mediatek,mt8173-thermal" : For MT8173 family of SoCs
-  - "mediatek,mt2701-thermal" : For MT2701 family of SoCs
-  - "mediatek,mt2712-thermal" : For MT2712 family of SoCs
-  - "mediatek,mt7622-thermal" : For MT7622 SoC
-  - "mediatek,mt7981-thermal", "mediatek,mt7986-thermal" : For MT7981 SoC
-  - "mediatek,mt7986-thermal" : For MT7986 SoC
-  - "mediatek,mt8183-thermal" : For MT8183 family of SoCs
-  - "mediatek,mt8365-thermal" : For MT8365 family of SoCs
-  - "mediatek,mt8516-thermal", "mediatek,mt2701-thermal : For MT8516 family of SoCs
-- reg: Address range of the thermal controller
-- interrupts: IRQ for the thermal controller
-- clocks, clock-names: Clocks needed for the thermal controller. required
-                       clocks are:
-		       "therm":	 Main clock needed for register access
-		       "auxadc": The AUXADC clock
-- mediatek,auxadc: A phandle to the AUXADC which the thermal controller uses
-- mediatek,apmixedsys: A phandle to the APMIXEDSYS controller.
-- #thermal-sensor-cells : Should be 0. See Documentation/devicetree/bindings/thermal/thermal-sensor.yaml for a description.
-
-Optional properties:
-- resets: Reference to the reset controller controlling the thermal controller.
-- nvmem-cells: A phandle to the calibration data provided by a nvmem device. If
-               unspecified default values shall be used.
-- nvmem-cell-names: Should be "calibration-data"
-
-Example:
-
-	thermal: thermal@1100b000 {
-		#thermal-sensor-cells = <1>;
-		compatible = "mediatek,mt8173-thermal";
-		reg = <0 0x1100b000 0 0x1000>;
-		interrupts = <0 70 IRQ_TYPE_LEVEL_LOW>;
-		clocks = <&pericfg CLK_PERI_THERM>, <&pericfg CLK_PERI_AUXADC>;
-		clock-names = "therm", "auxadc";
-		resets = <&pericfg MT8173_PERI_THERM_SW_RST>;
-		reset-names = "therm";
-		mediatek,auxadc = <&auxadc>;
-		mediatek,apmixedsys = <&apmixedsys>;
-		nvmem-cells = <&thermal_calibration_data>;
-		nvmem-cell-names = "calibration-data";
-	};

Documentation/devicetree/bindings/thermal/qcom-spmi-adc-tm-hc.yaml

@@ -114,12 +114,14 @@ examples:
   - |
     #include <dt-bindings/iio/qcom,spmi-vadc.h>
     #include <dt-bindings/interrupt-controller/irq.h>
-    spmi_bus {
+
+    pmic {
         #address-cells = <1>;
         #size-cells = <0>;
+
         pm8998_adc: adc@3100 {
-            reg = <0x3100>;
             compatible = "qcom,spmi-adc-rev2";
+            reg = <0x3100>;
             #address-cells = <1>;
             #size-cells = <0>;
             #io-channel-cells = <1>;
@@ -130,7 +132,7 @@ examples:
             };
         };
 
-        pm8998_adc_tm: adc-tm@3400 {
+        adc-tm@3400 {
             compatible = "qcom,spmi-adc-tm-hc";
             reg = <0x3400>;
             interrupts = <0x2 0x34 0x0 IRQ_TYPE_EDGE_RISING>;

Documentation/devicetree/bindings/thermal/qcom-spmi-adc-tm5.yaml

@@ -167,12 +167,14 @@ examples:
   - |
     #include <dt-bindings/iio/qcom,spmi-vadc.h>
     #include <dt-bindings/interrupt-controller/irq.h>
-    spmi_bus {
+
+    pmic {
         #address-cells = <1>;
         #size-cells = <0>;
+
         pm8150b_adc: adc@3100 {
-            reg = <0x3100>;
             compatible = "qcom,spmi-adc5";
+            reg = <0x3100>;
             #address-cells = <1>;
             #size-cells = <0>;
             #io-channel-cells = <1>;
@@ -186,7 +188,7 @@ examples:
             };
         };
 
-        pm8150b_adc_tm: adc-tm@3500 {
+        adc-tm@3500 {
             compatible = "qcom,spmi-adc-tm5";
             reg = <0x3500>;
             interrupts = <0x2 0x35 0x0 IRQ_TYPE_EDGE_RISING>;
@@ -207,12 +209,14 @@ examples:
     #include <dt-bindings/iio/qcom,spmi-adc7-pmk8350.h>
     #include <dt-bindings/iio/qcom,spmi-adc7-pm8350.h>
     #include <dt-bindings/interrupt-controller/irq.h>
-    spmi_bus {
+
+    pmic {
         #address-cells = <1>;
         #size-cells = <0>;
+
         pmk8350_vadc: adc@3100 {
-            reg = <0x3100>;
             compatible = "qcom,spmi-adc7";
+            reg = <0x3100>;
             #address-cells = <1>;
             #size-cells = <0>;
             #io-channel-cells = <1>;
@@ -233,7 +237,7 @@ examples:
             };
         };
 
-        pmk8350_adc_tm: adc-tm@3400 {
+        adc-tm@3400 {
             compatible = "qcom,spmi-adc-tm5-gen2";
             reg = <0x3400>;
             interrupts = <0x0 0x34 0x0 IRQ_TYPE_EDGE_RISING>;

Documentation/devicetree/bindings/thermal/qcom-tsens.yaml

@@ -66,6 +66,7 @@ properties:
               - qcom,sm8350-tsens
               - qcom,sm8450-tsens
               - qcom,sm8550-tsens
+              - qcom,sm8650-tsens
           - const: qcom,tsens-v2
 
       - description: v2 of TSENS with combined interrupt

Documentation/devicetree/bindings/thermal/thermal-zones.yaml

@@ -75,6 +75,22 @@ patternProperties:
           framework and assumes that the thermal sensors in this zone
           support interrupts.
 
+      critical-action:
+        $ref: /schemas/types.yaml#/definitions/string
+        description: |
+          The action the OS should perform after the critical temperature is reached.
+          By default the system will shutdown as a safe action to prevent damage
+          to the hardware, if the property is not set.
+          The shutdown action should be always the default and preferred one.
+          Choose 'reboot' with care, as the hardware may be in thermal stress,
+          thus leading to infinite reboots that may cause damage to the hardware.
+          Make sure the firmware/bootloader will act as the last resort and take
+          over the thermal control.
+
+        enum:
+          - shutdown
+          - reboot
+
       thermal-sensors:
         $ref: /schemas/types.yaml#/definitions/phandle-array
         maxItems: 1

drivers/thermal/amlogic_thermal.c

@@ -167,13 +167,11 @@ static int amlogic_thermal_enable(struct amlogic_thermal *data)
 	return 0;
 }
 
-static int amlogic_thermal_disable(struct amlogic_thermal *data)
+static void amlogic_thermal_disable(struct amlogic_thermal *data)
 {
 	regmap_update_bits(data->regmap, TSENSOR_CFG_REG1,
 			   TSENSOR_CFG_REG1_ENABLE, 0);
 	clk_disable_unprepare(data->clk);
-
-	return 0;
 }
 
 static int amlogic_thermal_get_temp(struct thermal_zone_device *tz, int *temp)
@@ -298,27 +296,30 @@ static void amlogic_thermal_remove(struct platform_device *pdev)
 	amlogic_thermal_disable(data);
 }
 
-static int __maybe_unused amlogic_thermal_suspend(struct device *dev)
+static int amlogic_thermal_suspend(struct device *dev)
 {
 	struct amlogic_thermal *data = dev_get_drvdata(dev);
 
-	return amlogic_thermal_disable(data);
+	amlogic_thermal_disable(data);
+
+	return 0;
 }
 
-static int __maybe_unused amlogic_thermal_resume(struct device *dev)
+static int amlogic_thermal_resume(struct device *dev)
 {
 	struct amlogic_thermal *data = dev_get_drvdata(dev);
 
 	return amlogic_thermal_enable(data);
 }
 
-static SIMPLE_DEV_PM_OPS(amlogic_thermal_pm_ops,
-			 amlogic_thermal_suspend, amlogic_thermal_resume);
+static DEFINE_SIMPLE_DEV_PM_OPS(amlogic_thermal_pm_ops,
+				amlogic_thermal_suspend,
+				amlogic_thermal_resume);
 
 static struct platform_driver amlogic_thermal_driver = {
 	.driver = {
 		.name		= "amlogic_thermal",
-		.pm		= &amlogic_thermal_pm_ops,
+		.pm		= pm_ptr(&amlogic_thermal_pm_ops),
 		.of_match_table = of_amlogic_thermal_match,
 	},
 	.probe = amlogic_thermal_probe,

drivers/thermal/loongson2_thermal.c

@@ -127,7 +127,7 @@ static int loongson2_thermal_probe(struct platform_device *pdev)
 		if (!IS_ERR(tzd))
 			break;
 
-		if (PTR_ERR(tzd) != ENODEV)
+		if (PTR_ERR(tzd) != -ENODEV)
 			continue;
 
 		return dev_err_probe(dev, PTR_ERR(tzd), "failed to register");

drivers/thermal/samsung/exynos_tmu.c

@@ -138,12 +138,10 @@ enum soc_type {
 /**
  * struct exynos_tmu_data : A structure to hold the private data of the TMU
  *			    driver
- * @id: identifier of the one instance of the TMU controller.
  * @base: base address of the single instance of the TMU controller.
  * @base_second: base address of the common registers of the TMU controller.
  * @irq: irq number of the TMU controller.
  * @soc: id of the SOC type.
- * @irq_work: pointer to the irq work structure.
  * @lock: lock to implement synchronization.
  * @clk: pointer to the clock structure.
  * @clk_sec: pointer to the clock structure for accessing the base_second.
@@ -159,13 +157,13 @@ enum soc_type {
  * @reference_voltage: reference voltage of amplifier
  *	in the positive-TC generator block
  *	0 < reference_voltage <= 31
- * @regulator: pointer to the TMU regulator structure.
- * @reg_conf: pointer to structure to register with core thermal.
  * @tzd: pointer to thermal_zone_device structure
- * @ntrip: number of supported trip points.
  * @enabled: current status of TMU device
- * @tmu_set_trip_temp: SoC specific method to set trip (rising threshold)
- * @tmu_set_trip_hyst: SoC specific to set hysteresis (falling threshold)
+ * @tmu_set_low_temp: SoC specific method to set trip (falling threshold)
+ * @tmu_set_high_temp: SoC specific method to set trip (rising threshold)
+ * @tmu_set_crit_temp: SoC specific method to set critical temperature
+ * @tmu_disable_low: SoC specific method to disable an interrupt (falling threshold)
+ * @tmu_disable_high: SoC specific method to disable an interrupt (rising threshold)
  * @tmu_initialize: SoC specific TMU initialization method
  * @tmu_control: SoC specific TMU control method
  * @tmu_read: SoC specific TMU temperature read method
@@ -173,12 +171,10 @@ enum soc_type {
  * @tmu_clear_irqs: SoC specific TMU interrupts clearing method
  */
 struct exynos_tmu_data {
-	int id;
 	void __iomem *base;
 	void __iomem *base_second;
 	int irq;
 	enum soc_type soc;
-	struct work_struct irq_work;
 	struct mutex lock;
 	struct clk *clk, *clk_sec, *sclk;
 	u32 cal_type;
@@ -188,15 +184,14 @@ struct exynos_tmu_data {
 	u16 temp_error1, temp_error2;
 	u8 gain;
 	u8 reference_voltage;
-	struct regulator *regulator;
 	struct thermal_zone_device *tzd;
-	unsigned int ntrip;
 	bool enabled;
 
-	void (*tmu_set_trip_temp)(struct exynos_tmu_data *data, int trip,
-				 u8 temp);
-	void (*tmu_set_trip_hyst)(struct exynos_tmu_data *data, int trip,
-				 u8 temp, u8 hyst);
+	void (*tmu_set_low_temp)(struct exynos_tmu_data *data, u8 temp);
+	void (*tmu_set_high_temp)(struct exynos_tmu_data *data, u8 temp);
+	void (*tmu_set_crit_temp)(struct exynos_tmu_data *data, u8 temp);
+	void (*tmu_disable_low)(struct exynos_tmu_data *data);
+	void (*tmu_disable_high)(struct exynos_tmu_data *data);
 	void (*tmu_initialize)(struct platform_device *pdev);
 	void (*tmu_control)(struct platform_device *pdev, bool on);
 	int (*tmu_read)(struct exynos_tmu_data *data);
@@ -258,25 +253,8 @@ static void sanitize_temp_error(struct exynos_tmu_data *data, u32 trim_info)
 static int exynos_tmu_initialize(struct platform_device *pdev)
 {
 	struct exynos_tmu_data *data = platform_get_drvdata(pdev);
-	struct thermal_zone_device *tzd = data->tzd;
-	int num_trips = thermal_zone_get_num_trips(tzd);
 	unsigned int status;
-	int ret = 0, temp;
-
-	ret = thermal_zone_get_crit_temp(tzd, &temp);
-	if (ret && data->soc != SOC_ARCH_EXYNOS5433) { /* FIXME */
-		dev_err(&pdev->dev,
-			"No CRITICAL trip point defined in device tree!\n");
-		goto out;
-	}
-
-	if (num_trips > data->ntrip) {
-		dev_info(&pdev->dev,
-			 "More trip points than supported by this TMU.\n");
-		dev_info(&pdev->dev,
-			 "%d trip points should be configured in polling mode.\n",
-			 num_trips - data->ntrip);
-	}
+	int ret = 0;
 
 	mutex_lock(&data->lock);
 	clk_enable(data->clk);
@@ -287,34 +265,44 @@ static int exynos_tmu_initialize(struct platform_device *pdev)
 	if (!status) {
 		ret = -EBUSY;
 	} else {
-		int i, ntrips =
-			min_t(int, num_trips, data->ntrip);
-
 		data->tmu_initialize(pdev);
+		data->tmu_clear_irqs(data);
+	}
 
-		/* Write temperature code for rising and falling threshold */
-		for (i = 0; i < ntrips; i++) {
+	if (!IS_ERR(data->clk_sec))
+		clk_disable(data->clk_sec);
+	clk_disable(data->clk);
+	mutex_unlock(&data->lock);
 
-			struct thermal_trip trip;
+	return ret;
+}
 
-			ret = thermal_zone_get_trip(tzd, i, &trip);
-			if (ret)
-				goto err;
+static int exynos_thermal_zone_configure(struct platform_device *pdev)
+{
+	struct exynos_tmu_data *data = platform_get_drvdata(pdev);
+	struct thermal_zone_device *tzd = data->tzd;
+	int ret, temp;
 
-			data->tmu_set_trip_temp(data, i, trip.temperature / MCELSIUS);
-			data->tmu_set_trip_hyst(data, i, trip.temperature / MCELSIUS,
-						trip.hysteresis / MCELSIUS);
-		}
+	ret = thermal_zone_get_crit_temp(tzd, &temp);
+	if (ret) {
+		/* FIXME: Remove this special case */
+		if (data->soc == SOC_ARCH_EXYNOS5433)
+			return 0;
 
-		data->tmu_clear_irqs(data);
+		dev_err(&pdev->dev,
+			"No CRITICAL trip point defined in device tree!\n");
+		return ret;
 	}
-err:
+
+	mutex_lock(&data->lock);
+	clk_enable(data->clk);
+
+	data->tmu_set_crit_temp(data, temp / MCELSIUS);
+
 	clk_disable(data->clk);
 	mutex_unlock(&data->lock);
-	if (!IS_ERR(data->clk_sec))
-		clk_disable(data->clk_sec);
-out:
-	return ret;
+
+	return 0;
 }
 
 static u32 get_con_reg(struct exynos_tmu_data *data, u32 con)
@@ -347,30 +335,74 @@ static void exynos_tmu_control(struct platform_device *pdev, bool on)
 	mutex_unlock(&data->lock);
 }
 
-static void exynos4210_tmu_set_trip_temp(struct exynos_tmu_data *data,
-					 int trip_id, u8 temp)
+static void exynos_tmu_update_bit(struct exynos_tmu_data *data, int reg_off,
+				  int bit_off, bool enable)
+{
+	u32 interrupt_en;
+
+	interrupt_en = readl(data->base + reg_off);
+	if (enable)
+		interrupt_en |= BIT(bit_off);
+	else
+		interrupt_en &= ~BIT(bit_off);
+	writel(interrupt_en, data->base + reg_off);
+}
+
+static void exynos_tmu_update_temp(struct exynos_tmu_data *data, int reg_off,
+				   int bit_off, u8 temp)
 {
-	struct thermal_trip trip;
-	u8 ref, th_code;
+	u16 tmu_temp_mask;
+	u32 th;
 
-	if (thermal_zone_get_trip(data->tzd, 0, &trip))
-		return;
+	tmu_temp_mask =
+		(data->soc == SOC_ARCH_EXYNOS7) ? EXYNOS7_TMU_TEMP_MASK
+						: EXYNOS_TMU_TEMP_MASK;
 
-	ref = trip.temperature / MCELSIUS;
+	th = readl(data->base + reg_off);
+	th &= ~(tmu_temp_mask << bit_off);
+	th |= temp_to_code(data, temp) << bit_off;
+	writel(th, data->base + reg_off);
+}
 
-	if (trip_id == 0) {
-		th_code = temp_to_code(data, ref);
-		writeb(th_code, data->base + EXYNOS4210_TMU_REG_THRESHOLD_TEMP);
-	}
+static void exynos4210_tmu_set_low_temp(struct exynos_tmu_data *data, u8 temp)
+{
+	/*
+	 * Failing thresholds are not supported on Exynos 4210.
+	 * We use polling instead.
+	 */
+}
 
-	temp -= ref;
-	writeb(temp, data->base + EXYNOS4210_TMU_REG_TRIG_LEVEL0 + trip_id * 4);
+static void exynos4210_tmu_set_high_temp(struct exynos_tmu_data *data, u8 temp)
+{
+	temp = temp_to_code(data, temp);
+	writeb(temp, data->base + EXYNOS4210_TMU_REG_TRIG_LEVEL0 + 4);
+	exynos_tmu_update_bit(data, EXYNOS_TMU_REG_INTEN,
+			      EXYNOS_TMU_INTEN_RISE0_SHIFT + 4, true);
 }
 
-/* failing thresholds are not supported on Exynos4210 */
-static void exynos4210_tmu_set_trip_hyst(struct exynos_tmu_data *data,
-					 int trip, u8 temp, u8 hyst)
+static void exynos4210_tmu_disable_low(struct exynos_tmu_data *data)
 {
+	/* Again, this is handled by polling. */
+}
+
+static void exynos4210_tmu_disable_high(struct exynos_tmu_data *data)
+{
+	exynos_tmu_update_bit(data, EXYNOS_TMU_REG_INTEN,
+			      EXYNOS_TMU_INTEN_RISE0_SHIFT + 4, false);
+}
+
+static void exynos4210_tmu_set_crit_temp(struct exynos_tmu_data *data, u8 temp)
+{
+	/*
+	 * Hardware critical temperature handling is not supported on Exynos 4210.
+	 * We still set the critical temperature threshold, but this is only to
+	 * make sure it is handled as soon as possible. It is just a normal interrupt.
+	 */
+
+	temp = temp_to_code(data, temp);
+	writeb(temp, data->base + EXYNOS4210_TMU_REG_TRIG_LEVEL0 + 12);
+	exynos_tmu_update_bit(data, EXYNOS_TMU_REG_INTEN,
+			      EXYNOS_TMU_INTEN_RISE0_SHIFT + 12, true);
 }
 
 static void exynos4210_tmu_initialize(struct platform_device *pdev)
@@ -378,35 +410,35 @@ static void exynos4210_tmu_initialize(struct platform_device *pdev)
 	struct exynos_tmu_data *data = platform_get_drvdata(pdev);
 
 	sanitize_temp_error(data, readl(data->base + EXYNOS_TMU_REG_TRIMINFO));
+
+	writeb(0, data->base + EXYNOS4210_TMU_REG_THRESHOLD_TEMP);
 }
 
-static void exynos4412_tmu_set_trip_temp(struct exynos_tmu_data *data,
-					 int trip, u8 temp)
+static void exynos4412_tmu_set_low_temp(struct exynos_tmu_data *data, u8 temp)
 {
-	u32 th, con;
-
-	th = readl(data->base + EXYNOS_THD_TEMP_RISE);
-	th &= ~(0xff << 8 * trip);
-	th |= temp_to_code(data, temp) << 8 * trip;
-	writel(th, data->base + EXYNOS_THD_TEMP_RISE);
+	exynos_tmu_update_temp(data, EXYNOS_THD_TEMP_FALL, 0, temp);
+	exynos_tmu_update_bit(data, EXYNOS_TMU_REG_INTEN,
+			      EXYNOS_TMU_INTEN_FALL0_SHIFT, true);
+}
 
-	if (trip == 3) {
-		con = readl(data->base + EXYNOS_TMU_REG_CONTROL);
-		con |= (1 << EXYNOS_TMU_THERM_TRIP_EN_SHIFT);
-		writel(con, data->base + EXYNOS_TMU_REG_CONTROL);
-	}
+static void exynos4412_tmu_set_high_temp(struct exynos_tmu_data *data, u8 temp)
+{
+	exynos_tmu_update_temp(data, EXYNOS_THD_TEMP_RISE, 8, temp);
+	exynos_tmu_update_bit(data, EXYNOS_TMU_REG_INTEN,
+			      EXYNOS_TMU_INTEN_RISE0_SHIFT + 4, true);
 }
 
-static void exynos4412_tmu_set_trip_hyst(struct exynos_tmu_data *data,
-					 int trip, u8 temp, u8 hyst)
+static void exynos4412_tmu_disable_low(struct exynos_tmu_data *data)
 {
-	u32 th;
+	exynos_tmu_update_bit(data, EXYNOS_TMU_REG_INTEN,
+			      EXYNOS_TMU_INTEN_FALL0_SHIFT, false);
+}
 
-	th = readl(data->base + EXYNOS_THD_TEMP_FALL);
-	th &= ~(0xff << 8 * trip);
-	if (hyst)
-		th |= temp_to_code(data, temp - hyst) << 8 * trip;
-	writel(th, data->base + EXYNOS_THD_TEMP_FALL);
+static void exynos4412_tmu_set_crit_temp(struct exynos_tmu_data *data, u8 temp)
+{
+	exynos_tmu_update_temp(data, EXYNOS_THD_TEMP_RISE, 24, temp);
+	exynos_tmu_update_bit(data, EXYNOS_TMU_REG_CONTROL,
+			      EXYNOS_TMU_THERM_TRIP_EN_SHIFT, true);
 }
 
 static void exynos4412_tmu_initialize(struct platform_device *pdev)
@@ -436,44 +468,39 @@ static void exynos4412_tmu_initialize(struct platform_device *pdev)
 	sanitize_temp_error(data, trim_info);
 }
 
-static void exynos5433_tmu_set_trip_temp(struct exynos_tmu_data *data,
-					 int trip, u8 temp)
+static void exynos5433_tmu_set_low_temp(struct exynos_tmu_data *data, u8 temp)
 {
-	unsigned int reg_off, j;
-	u32 th;
-
-	if (trip > 3) {
-		reg_off = EXYNOS5433_THD_TEMP_RISE7_4;
-		j = trip - 4;
-	} else {
-		reg_off = EXYNOS5433_THD_TEMP_RISE3_0;
-		j = trip;
-	}
+	exynos_tmu_update_temp(data, EXYNOS5433_THD_TEMP_FALL3_0, 0, temp);
+	exynos_tmu_update_bit(data, EXYNOS5433_TMU_REG_INTEN,
+			      EXYNOS_TMU_INTEN_FALL0_SHIFT, true);
+}
 
-	th = readl(data->base + reg_off);
-	th &= ~(0xff << j * 8);
-	th |= (temp_to_code(data, temp) << j * 8);
-	writel(th, data->base + reg_off);
+static void exynos5433_tmu_set_high_temp(struct exynos_tmu_data *data, u8 temp)
+{
+	exynos_tmu_update_temp(data, EXYNOS5433_THD_TEMP_RISE3_0, 8, temp);
+	exynos_tmu_update_bit(data, EXYNOS5433_TMU_REG_INTEN,
+			      EXYNOS7_TMU_INTEN_RISE0_SHIFT + 1, true);
 }
 
-static void exynos5433_tmu_set_trip_hyst(struct exynos_tmu_data *data,
-					 int trip, u8 temp, u8 hyst)
+static void exynos5433_tmu_disable_low(struct exynos_tmu_data *data)
 {
-	unsigned int reg_off, j;
-	u32 th;
+	exynos_tmu_update_bit(data, EXYNOS5433_TMU_REG_INTEN,
+			      EXYNOS_TMU_INTEN_FALL0_SHIFT, false);
+}
 
-	if (trip > 3) {
-		reg_off = EXYNOS5433_THD_TEMP_FALL7_4;
-		j = trip - 4;
-	} else {
-		reg_off = EXYNOS5433_THD_TEMP_FALL3_0;
-		j = trip;
-	}
+static void exynos5433_tmu_disable_high(struct exynos_tmu_data *data)
+{
+	exynos_tmu_update_bit(data, EXYNOS5433_TMU_REG_INTEN,
+			      EXYNOS7_TMU_INTEN_RISE0_SHIFT + 1, false);
+}
 
-	th = readl(data->base + reg_off);
-	th &= ~(0xff << j * 8);
-	th |= (temp_to_code(data, temp - hyst) << j * 8);
-	writel(th, data->base + reg_off);
+static void exynos5433_tmu_set_crit_temp(struct exynos_tmu_data *data, u8 temp)
+{
+	exynos_tmu_update_temp(data, EXYNOS5433_THD_TEMP_RISE7_4, 24, temp);
+	exynos_tmu_update_bit(data, EXYNOS_TMU_REG_CONTROL,
+			      EXYNOS_TMU_THERM_TRIP_EN_SHIFT, true);
+	exynos_tmu_update_bit(data, EXYNOS5433_TMU_REG_INTEN,
+			      EXYNOS7_TMU_INTEN_RISE0_SHIFT + 7, true);
 }
 
 static void exynos5433_tmu_initialize(struct platform_device *pdev)
@@ -509,34 +536,41 @@ static void exynos5433_tmu_initialize(struct platform_device *pdev)
 			cal_type ?  2 : 1);
 }
 
-static void exynos7_tmu_set_trip_temp(struct exynos_tmu_data *data,
-				      int trip, u8 temp)
+static void exynos7_tmu_set_low_temp(struct exynos_tmu_data *data, u8 temp)
 {
-	unsigned int reg_off, bit_off;
-	u32 th;
-
-	reg_off = ((7 - trip) / 2) * 4;
-	bit_off = ((8 - trip) % 2);
+	exynos_tmu_update_temp(data, EXYNOS7_THD_TEMP_FALL7_6 + 12, 0, temp);
+	exynos_tmu_update_bit(data, EXYNOS7_TMU_REG_INTEN,
+			      EXYNOS_TMU_INTEN_FALL0_SHIFT + 0, true);
+}
 
-	th = readl(data->base + EXYNOS7_THD_TEMP_RISE7_6 + reg_off);
-	th &= ~(EXYNOS7_TMU_TEMP_MASK << (16 * bit_off));
-	th |= temp_to_code(data, temp) << (16 * bit_off);
-	writel(th, data->base + EXYNOS7_THD_TEMP_RISE7_6 + reg_off);
+static void exynos7_tmu_set_high_temp(struct exynos_tmu_data *data, u8 temp)
+{
+	exynos_tmu_update_temp(data, EXYNOS7_THD_TEMP_RISE7_6 + 12, 16, temp);
+	exynos_tmu_update_bit(data, EXYNOS7_TMU_REG_INTEN,
+			      EXYNOS7_TMU_INTEN_RISE0_SHIFT + 1, true);
 }
 
-static void exynos7_tmu_set_trip_hyst(struct exynos_tmu_data *data,
-				      int trip, u8 temp, u8 hyst)
+static void exynos7_tmu_disable_low(struct exynos_tmu_data *data)
 {
-	unsigned int reg_off, bit_off;
-	u32 th;
+	exynos_tmu_update_bit(data, EXYNOS7_TMU_REG_INTEN,
+			      EXYNOS_TMU_INTEN_FALL0_SHIFT + 0, false);
+}
 
-	reg_off = ((7 - trip) / 2) * 4;
-	bit_off = ((8 - trip) % 2);
+static void exynos7_tmu_disable_high(struct exynos_tmu_data *data)
+{
+	exynos_tmu_update_bit(data, EXYNOS7_TMU_REG_INTEN,
+			      EXYNOS7_TMU_INTEN_RISE0_SHIFT + 1, false);
+}
 
-	th = readl(data->base + EXYNOS7_THD_TEMP_FALL7_6 + reg_off);
-	th &= ~(EXYNOS7_TMU_TEMP_MASK << (16 * bit_off));
-	th |= temp_to_code(data, temp - hyst) << (16 * bit_off);
-	writel(th, data->base + EXYNOS7_THD_TEMP_FALL7_6 + reg_off);
+static void exynos7_tmu_set_crit_temp(struct exynos_tmu_data *data, u8 temp)
+{
+	/*
+	 * Like Exynos 4210, Exynos 7 does not seem to support critical temperature
+	 * handling in hardware. Again, we still set a separate interrupt for it.
+	 */
+	exynos_tmu_update_temp(data, EXYNOS7_THD_TEMP_RISE7_6 + 0, 16, temp);
+	exynos_tmu_update_bit(data, EXYNOS7_TMU_REG_INTEN,
+			      EXYNOS7_TMU_INTEN_RISE0_SHIFT + 7, true);
 }
 
 static void exynos7_tmu_initialize(struct platform_device *pdev)
@@ -551,95 +585,51 @@ static void exynos7_tmu_initialize(struct platform_device *pdev)
 static void exynos4210_tmu_control(struct platform_device *pdev, bool on)
 {
 	struct exynos_tmu_data *data = platform_get_drvdata(pdev);
-	struct thermal_zone_device *tz = data->tzd;
-	struct thermal_trip trip;
-	unsigned int con, interrupt_en = 0, i;
+	unsigned int con;
 
 	con = get_con_reg(data, readl(data->base + EXYNOS_TMU_REG_CONTROL));
 
-	if (on) {
-		for (i = 0; i < data->ntrip; i++) {
-			if (thermal_zone_get_trip(tz, i, &trip))
-				continue;
-
-			interrupt_en |=
-				(1 << (EXYNOS_TMU_INTEN_RISE0_SHIFT + i * 4));
-		}
-
-		if (data->soc != SOC_ARCH_EXYNOS4210)
-			interrupt_en |=
-				interrupt_en << EXYNOS_TMU_INTEN_FALL0_SHIFT;
-
-		con |= (1 << EXYNOS_TMU_CORE_EN_SHIFT);
-	} else {
-		con &= ~(1 << EXYNOS_TMU_CORE_EN_SHIFT);
-	}
+	if (on)
+		con |= BIT(EXYNOS_TMU_CORE_EN_SHIFT);
+	else
+		con &= ~BIT(EXYNOS_TMU_CORE_EN_SHIFT);
 
-	writel(interrupt_en, data->base + EXYNOS_TMU_REG_INTEN);
 	writel(con, data->base + EXYNOS_TMU_REG_CONTROL);
 }
 
 static void exynos5433_tmu_control(struct platform_device *pdev, bool on)
 {
 	struct exynos_tmu_data *data = platform_get_drvdata(pdev);
-	struct thermal_zone_device *tz = data->tzd;
-	struct thermal_trip trip;
-	unsigned int con, interrupt_en = 0, pd_det_en, i;
+	unsigned int con, pd_det_en;
 
 	con = get_con_reg(data, readl(data->base + EXYNOS_TMU_REG_CONTROL));
 
-	if (on) {
-		for (i = 0; i < data->ntrip; i++) {
-			if (thermal_zone_get_trip(tz, i, &trip))
-				continue;
-
-			interrupt_en |=
-				(1 << (EXYNOS7_TMU_INTEN_RISE0_SHIFT + i));
-		}
-
-		interrupt_en |=
-			interrupt_en << EXYNOS_TMU_INTEN_FALL0_SHIFT;
-
-		con |= (1 << EXYNOS_TMU_CORE_EN_SHIFT);
-	} else
-		con &= ~(1 << EXYNOS_TMU_CORE_EN_SHIFT);
+	if (on)
+		con |= BIT(EXYNOS_TMU_CORE_EN_SHIFT);
+	else
+		con &= ~BIT(EXYNOS_TMU_CORE_EN_SHIFT);
 
 	pd_det_en = on ? EXYNOS5433_PD_DET_EN : 0;
 
 	writel(pd_det_en, data->base + EXYNOS5433_TMU_PD_DET_EN);
-	writel(interrupt_en, data->base + EXYNOS5433_TMU_REG_INTEN);
 	writel(con, data->base + EXYNOS_TMU_REG_CONTROL);
 }
 
 static void exynos7_tmu_control(struct platform_device *pdev, bool on)
 {
 	struct exynos_tmu_data *data = platform_get_drvdata(pdev);
-	struct thermal_zone_device *tz = data->tzd;
-	struct thermal_trip trip;
-	unsigned int con, interrupt_en = 0, i;
+	unsigned int con;
 
 	con = get_con_reg(data, readl(data->base + EXYNOS_TMU_REG_CONTROL));
 
 	if (on) {
-		for (i = 0; i < data->ntrip; i++) {
-			if (thermal_zone_get_trip(tz, i, &trip))
-				continue;
-
-			interrupt_en |=
-				(1 << (EXYNOS7_TMU_INTEN_RISE0_SHIFT + i));
-		}
-
-		interrupt_en |=
-			interrupt_en << EXYNOS_TMU_INTEN_FALL0_SHIFT;
-
-		con |= (1 << EXYNOS_TMU_CORE_EN_SHIFT);
-		con |= (1 << EXYNOS7_PD_DET_EN_SHIFT);
+		con |= BIT(EXYNOS_TMU_CORE_EN_SHIFT);
+		con |= BIT(EXYNOS7_PD_DET_EN_SHIFT);
 	} else {
-		con &= ~(1 << EXYNOS_TMU_CORE_EN_SHIFT);
-		con &= ~(1 << EXYNOS7_PD_DET_EN_SHIFT);
+		con &= ~BIT(EXYNOS_TMU_CORE_EN_SHIFT);
+		con &= ~BIT(EXYNOS7_PD_DET_EN_SHIFT);
 	}
 
-	writel(interrupt_en, data->base + EXYNOS7_TMU_REG_INTEN);
 	writel(con, data->base + EXYNOS_TMU_REG_CONTROL);
 }
 
@@ -766,10 +756,9 @@ static int exynos7_tmu_read(struct exynos_tmu_data *data)
 		EXYNOS7_TMU_TEMP_MASK;
 }
 
-static void exynos_tmu_work(struct work_struct *work)
+static irqreturn_t exynos_tmu_threaded_irq(int irq, void *id)
 {
-	struct exynos_tmu_data *data = container_of(work,
-			struct exynos_tmu_data, irq_work);
+	struct exynos_tmu_data *data = id;
 
 	thermal_zone_device_update(data->tzd, THERMAL_EVENT_UNSPECIFIED);
 
@@ -781,7 +770,8 @@ static void exynos_tmu_work(struct work_struct *work)
 
 	clk_disable(data->clk);
 	mutex_unlock(&data->lock);
-	enable_irq(data->irq);
+
+	return IRQ_HANDLED;
 }
 
 static void exynos4210_tmu_clear_irqs(struct exynos_tmu_data *data)
@@ -815,16 +805,6 @@ static void exynos4210_tmu_clear_irqs(struct exynos_tmu_data *data)
 	writel(val_irq, data->base + tmu_intclear);
 }
 
-static irqreturn_t exynos_tmu_irq(int irq, void *id)
-{
-	struct exynos_tmu_data *data = id;
-
-	disable_irq_nosync(irq);
-	schedule_work(&data->irq_work);
-
-	return IRQ_HANDLED;
-}
-
 static const struct of_device_id exynos_tmu_match[] = {
 	{
 		.compatible = "samsung,exynos3250-tmu",
@@ -866,10 +846,6 @@ static int exynos_map_dt_data(struct platform_device *pdev)
 	if (!data || !pdev->dev.of_node)
 		return -ENODEV;
 
-	data->id = of_alias_get_id(pdev->dev.of_node, "tmuctrl");
-	if (data->id < 0)
-		data->id = 0;
-
 	data->irq = irq_of_parse_and_map(pdev->dev.of_node, 0);
 	if (data->irq <= 0) {
 		dev_err(&pdev->dev, "failed to get IRQ\n");
@@ -891,13 +867,15 @@ static int exynos_map_dt_data(struct platform_device *pdev)
 
 	switch (data->soc) {
 	case SOC_ARCH_EXYNOS4210:
-		data->tmu_set_trip_temp = exynos4210_tmu_set_trip_temp;
-		data->tmu_set_trip_hyst = exynos4210_tmu_set_trip_hyst;
+		data->tmu_set_low_temp = exynos4210_tmu_set_low_temp;
+		data->tmu_set_high_temp = exynos4210_tmu_set_high_temp;
+		data->tmu_disable_low = exynos4210_tmu_disable_low;
+		data->tmu_disable_high = exynos4210_tmu_disable_high;
+		data->tmu_set_crit_temp = exynos4210_tmu_set_crit_temp;
 		data->tmu_initialize = exynos4210_tmu_initialize;
 		data->tmu_control = exynos4210_tmu_control;
 		data->tmu_read = exynos4210_tmu_read;
 		data->tmu_clear_irqs = exynos4210_tmu_clear_irqs;
-		data->ntrip = 4;
 		data->gain = 15;
 		data->reference_voltage = 7;
 		data->efuse_value = 55;
@@ -910,14 +888,16 @@ static int exynos_map_dt_data(struct platform_device *pdev)
 	case SOC_ARCH_EXYNOS5260:
 	case SOC_ARCH_EXYNOS5420:
 	case SOC_ARCH_EXYNOS5420_TRIMINFO:
-		data->tmu_set_trip_temp = exynos4412_tmu_set_trip_temp;
-		data->tmu_set_trip_hyst = exynos4412_tmu_set_trip_hyst;
+		data->tmu_set_low_temp = exynos4412_tmu_set_low_temp;
+		data->tmu_set_high_temp = exynos4412_tmu_set_high_temp;
+		data->tmu_disable_low = exynos4412_tmu_disable_low;
+		data->tmu_disable_high = exynos4210_tmu_disable_high;
+		data->tmu_set_crit_temp = exynos4412_tmu_set_crit_temp;
 		data->tmu_initialize = exynos4412_tmu_initialize;
 		data->tmu_control = exynos4210_tmu_control;
 		data->tmu_read = exynos4412_tmu_read;
 		data->tmu_set_emulation = exynos4412_tmu_set_emulation;
 		data->tmu_clear_irqs = exynos4210_tmu_clear_irqs;
-		data->ntrip = 4;
 		data->gain = 8;
 		data->reference_voltage = 16;
 		data->efuse_value = 55;
@@ -929,14 +909,16 @@ static int exynos_map_dt_data(struct platform_device *pdev)
 		data->max_efuse_value = 100;
 		break;
 	case SOC_ARCH_EXYNOS5433:
-		data->tmu_set_trip_temp = exynos5433_tmu_set_trip_temp;
-		data->tmu_set_trip_hyst = exynos5433_tmu_set_trip_hyst;
+		data->tmu_set_low_temp = exynos5433_tmu_set_low_temp;
+		data->tmu_set_high_temp = exynos5433_tmu_set_high_temp;
+		data->tmu_disable_low = exynos5433_tmu_disable_low;
+		data->tmu_disable_high = exynos5433_tmu_disable_high;
+		data->tmu_set_crit_temp = exynos5433_tmu_set_crit_temp;
 		data->tmu_initialize = exynos5433_tmu_initialize;
 		data->tmu_control = exynos5433_tmu_control;
 		data->tmu_read = exynos4412_tmu_read;
 		data->tmu_set_emulation = exynos4412_tmu_set_emulation;
 		data->tmu_clear_irqs = exynos4210_tmu_clear_irqs;
-		data->ntrip = 8;
 		data->gain = 8;
 		if (res.start == EXYNOS5433_G3D_BASE)
 			data->reference_voltage = 23;
@@ -947,14 +929,16 @@ static int exynos_map_dt_data(struct platform_device *pdev)
 		data->max_efuse_value = 150;
 		break;
 	case SOC_ARCH_EXYNOS7:
-		data->tmu_set_trip_temp = exynos7_tmu_set_trip_temp;
-		data->tmu_set_trip_hyst = exynos7_tmu_set_trip_hyst;
+		data->tmu_set_low_temp = exynos7_tmu_set_low_temp;
+		data->tmu_set_high_temp = exynos7_tmu_set_high_temp;
+		data->tmu_disable_low = exynos7_tmu_disable_low;
+		data->tmu_disable_high = exynos7_tmu_disable_high;
+		data->tmu_set_crit_temp = exynos7_tmu_set_crit_temp;
 		data->tmu_initialize = exynos7_tmu_initialize;
 		data->tmu_control = exynos7_tmu_control;
 		data->tmu_read = exynos7_tmu_read;
 		data->tmu_set_emulation = exynos4412_tmu_set_emulation;
 		data->tmu_clear_irqs = exynos4210_tmu_clear_irqs;
-		data->ntrip = 8;
 		data->gain = 9;
 		data->reference_voltage = 17;
 		data->efuse_value = 75;
@@ -990,9 +974,32 @@ static int exynos_map_dt_data(struct platform_device *pdev)
 	return 0;
 }
 
+static int exynos_set_trips(struct thermal_zone_device *tz, int low, int high)
+{
+	struct exynos_tmu_data *data = thermal_zone_device_priv(tz);
+
+	mutex_lock(&data->lock);
+	clk_enable(data->clk);
+
+	if (low > INT_MIN)
+		data->tmu_set_low_temp(data, low / MCELSIUS);
+	else
+		data->tmu_disable_low(data);
+	if (high < INT_MAX)
+		data->tmu_set_high_temp(data, high / MCELSIUS);
+	else
+		data->tmu_disable_high(data);
+
+	clk_disable(data->clk);
+	mutex_unlock(&data->lock);
+
+	return 0;
+}
+
 static const struct thermal_zone_device_ops exynos_sensor_ops = {
 	.get_temp = exynos_get_temp,
 	.set_emul_temp = exynos_tmu_set_emulation,
+	.set_trips = exynos_set_trips,
 };
 
 static int exynos_tmu_probe(struct platform_device *pdev)
@@ -1013,44 +1020,40 @@ static int exynos_tmu_probe(struct platform_device *pdev)
 	 * TODO: Add regulator as an SOC feature, so that regulator enable
 	 * is a compulsory call.
 	 */
-	data->regulator = devm_regulator_get_optional(&pdev->dev, "vtmu");
-	if (!IS_ERR(data->regulator)) {
-		ret = regulator_enable(data->regulator);
-		if (ret) {
-			dev_err(&pdev->dev, "failed to enable vtmu\n");
-			return ret;
-		}
-	} else {
-		if (PTR_ERR(data->regulator) == -EPROBE_DEFER)
+	ret = devm_regulator_get_enable_optional(&pdev->dev, "vtmu");
+	switch (ret) {
+	case 0:
+	case -ENODEV:
+		break;
+	case -EPROBE_DEFER:
 		return -EPROBE_DEFER;
-		dev_info(&pdev->dev, "Regulator node (vtmu) not found\n");
+	default:
+		dev_err(&pdev->dev, "Failed to get enabled regulator: %d\n",
+			ret);
+		return ret;
 	}
 
 	ret = exynos_map_dt_data(pdev);
 	if (ret)
-		goto err_sensor;
-
-	INIT_WORK(&data->irq_work, exynos_tmu_work);
+		return ret;
 
 	data->clk = devm_clk_get(&pdev->dev, "tmu_apbif");
 	if (IS_ERR(data->clk)) {
 		dev_err(&pdev->dev, "Failed to get clock\n");
-		ret = PTR_ERR(data->clk);
-		goto err_sensor;
+		return PTR_ERR(data->clk);
 	}
 
 	data->clk_sec = devm_clk_get(&pdev->dev, "tmu_triminfo_apbif");
 	if (IS_ERR(data->clk_sec)) {
 		if (data->soc == SOC_ARCH_EXYNOS5420_TRIMINFO) {
 			dev_err(&pdev->dev, "Failed to get triminfo clock\n");
-			ret = PTR_ERR(data->clk_sec);
-			goto err_sensor;
+			return PTR_ERR(data->clk_sec);
 		}
 	} else {
 		ret = clk_prepare(data->clk_sec);
 		if (ret) {
 			dev_err(&pdev->dev, "Failed to get clock\n");
-			goto err_sensor;
+			return ret;
 		}
 	}
 
@@ -1080,10 +1083,12 @@ static int exynos_tmu_probe(struct platform_device *pdev)
 		break;
 	}
 
-	/*
-	 * data->tzd must be registered before calling exynos_tmu_initialize(),
-	 * requesting irq and calling exynos_tmu_control().
-	 */
+	ret = exynos_tmu_initialize(pdev);
+	if (ret) {
+		dev_err(&pdev->dev, "Failed to initialize TMU\n");
+		goto err_sclk;
+	}
+
 	data->tzd = devm_thermal_of_zone_register(&pdev->dev, 0, data,
 						  &exynos_sensor_ops);
 	if (IS_ERR(data->tzd)) {
@@ -1094,14 +1099,17 @@ static int exynos_tmu_probe(struct platform_device *pdev)
 		goto err_sclk;
 	}
 
-	ret = exynos_tmu_initialize(pdev);
+	ret = exynos_thermal_zone_configure(pdev);
 	if (ret) {
-		dev_err(&pdev->dev, "Failed to initialize TMU\n");
+		dev_err(&pdev->dev, "Failed to configure the thermal zone\n");
 		goto err_sclk;
 	}
 
-	ret = devm_request_irq(&pdev->dev, data->irq, exynos_tmu_irq,
-		IRQF_TRIGGER_RISING | IRQF_SHARED, dev_name(&pdev->dev), data);
+	ret = devm_request_threaded_irq(&pdev->dev, data->irq, NULL,
+					exynos_tmu_threaded_irq,
+					IRQF_TRIGGER_RISING
+						| IRQF_SHARED | IRQF_ONESHOT,
+					dev_name(&pdev->dev), data);
 	if (ret) {
 		dev_err(&pdev->dev, "Failed to request irq: %d\n", data->irq);
 		goto err_sclk;
@@ -1117,10 +1125,6 @@ static int exynos_tmu_probe(struct platform_device *pdev)
 err_clk_sec:
 	if (!IS_ERR(data->clk_sec))
 		clk_unprepare(data->clk_sec);
-err_sensor:
-	if (!IS_ERR(data->regulator))
-		regulator_disable(data->regulator);
-
 	return ret;
 }
 
@@ -1134,9 +1138,6 @@ static void exynos_tmu_remove(struct platform_device *pdev)
 	clk_unprepare(data->clk);
 	if (!IS_ERR(data->clk_sec))
 		clk_unprepare(data->clk_sec);
-
-	if (!IS_ERR(data->regulator))
-		regulator_disable(data->regulator);
 }
 
 #ifdef CONFIG_PM_SLEEP

drivers/thermal/sun8i_thermal.c

@@ -606,6 +606,18 @@ static const struct ths_thermal_chip sun50i_h6_ths = {
 	.calc_temp = sun8i_ths_calc_temp,
 };
 
+static const struct ths_thermal_chip sun20i_d1_ths = {
+	.sensor_num = 1,
+	.has_bus_clk_reset = true,
+	.offset = 188552,
+	.scale = 673,
+	.temp_data_base = SUN50I_H6_THS_TEMP_DATA,
+	.calibrate = sun50i_h6_ths_calibrate,
+	.init = sun50i_h6_thermal_init,
+	.irq_ack = sun50i_h6_irq_ack,
+	.calc_temp = sun8i_ths_calc_temp,
+};
+
 static const struct of_device_id of_ths_match[] = {
 	{ .compatible = "allwinner,sun8i-a83t-ths", .data = &sun8i_a83t_ths },
 	{ .compatible = "allwinner,sun8i-h3-ths", .data = &sun8i_h3_ths },
@@ -614,6 +626,7 @@ static const struct of_device_id of_ths_match[] = {
 	{ .compatible = "allwinner,sun50i-a100-ths", .data = &sun50i_a100_ths },
 	{ .compatible = "allwinner,sun50i-h5-ths", .data = &sun50i_h5_ths },
 	{ .compatible = "allwinner,sun50i-h6-ths", .data = &sun50i_h6_ths },
+	{ .compatible = "allwinner,sun20i-d1-ths", .data = &sun20i_d1_ths },
 	{ /* sentinel */ },
 };
 MODULE_DEVICE_TABLE(of, of_ths_match);

drivers/thermal/thermal_core.c

@@ -318,21 +318,34 @@ void thermal_governor_update_tz(struct thermal_zone_device *tz,
 	tz->governor->update_tz(tz, reason);
 }
 
-void thermal_zone_device_critical(struct thermal_zone_device *tz)
+static void thermal_zone_device_halt(struct thermal_zone_device *tz, bool shutdown)
 {
 	/*
 	 * poweroff_delay_ms must be a carefully profiled positive value.
 	 * Its a must for forced_emergency_poweroff_work to be scheduled.
 	 */
 	int poweroff_delay_ms = CONFIG_THERMAL_EMERGENCY_POWEROFF_DELAY_MS;
+	const char *msg = "Temperature too high";
 
-	dev_emerg(&tz->device, "%s: critical temperature reached, "
-		  "shutting down\n", tz->type);
+	dev_emerg(&tz->device, "%s: critical temperature reached\n", tz->type);
 
-	hw_protection_shutdown("Temperature too high", poweroff_delay_ms);
+	if (shutdown)
+		hw_protection_shutdown(msg, poweroff_delay_ms);
+	else
+		hw_protection_reboot(msg, poweroff_delay_ms);
+}
+
+void thermal_zone_device_critical(struct thermal_zone_device *tz)
+{
+	thermal_zone_device_halt(tz, true);
 }
 EXPORT_SYMBOL(thermal_zone_device_critical);
 
+void thermal_zone_device_critical_reboot(struct thermal_zone_device *tz)
+{
+	thermal_zone_device_halt(tz, false);
+}
+
 static void handle_critical_trips(struct thermal_zone_device *tz,
 				  const struct thermal_trip *trip)
 {

drivers/thermal/thermal_core.h

@@ -114,6 +114,7 @@ int thermal_zone_device_set_policy(struct thermal_zone_device *, char *);
 int thermal_build_list_of_policies(char *buf);
 void __thermal_zone_device_update(struct thermal_zone_device *tz,
 				  enum thermal_notify_event event);
+void thermal_zone_device_critical_reboot(struct thermal_zone_device *tz);
 void thermal_governor_update_tz(struct thermal_zone_device *tz,
 				enum thermal_notify_event reason);
 

drivers/thermal/thermal_of.c

@@ -475,6 +475,7 @@ static struct thermal_zone_device *thermal_of_zone_register(struct device_node *
 	struct thermal_zone_params tzp = {};
 	struct thermal_zone_device_ops *of_ops;
 	struct device_node *np;
+	const char *action;
 	int delay, pdelay;
 	int ntrips, mask;
 	int ret;
@@ -511,6 +512,11 @@ static struct thermal_zone_device *thermal_of_zone_register(struct device_node *
 
 	mask = GENMASK_ULL((ntrips) - 1, 0);
 
+	ret = of_property_read_string(np, "critical-action", &action);
+	if (!ret)
+		if (!of_ops->critical && !strcasecmp(action, "reboot"))
+			of_ops->critical = thermal_zone_device_critical_reboot;
+
 	tz = thermal_zone_device_register_with_trips(np->name, trips, ntrips,
 						     mask, data, of_ops, &tzp,
 						     pdelay, delay);

include/linux/reboot.h

@@ -177,7 +177,17 @@ void ctrl_alt_del(void);
 
 extern void orderly_poweroff(bool force);
 extern void orderly_reboot(void);
-void hw_protection_shutdown(const char *reason, int ms_until_forced);
+void __hw_protection_shutdown(const char *reason, int ms_until_forced, bool shutdown);
+
+static inline void hw_protection_reboot(const char *reason, int ms_until_forced)
+{
+	__hw_protection_shutdown(reason, ms_until_forced, false);
+}
+
+static inline void hw_protection_shutdown(const char *reason, int ms_until_forced)
+{
+	__hw_protection_shutdown(reason, ms_until_forced, true);
+}
 
 /*
  * Emergency restart, callable from an interrupt handler.

kernel/reboot.c

@@ -957,21 +957,24 @@ static void hw_failure_emergency_poweroff(int poweroff_delay_ms)
 }
 
 /**
- * hw_protection_shutdown - Trigger an emergency system poweroff
+ * __hw_protection_shutdown - Trigger an emergency system shutdown or reboot
  *
- * @reason:		Reason of emergency shutdown to be printed.
- * @ms_until_forced:	Time to wait for orderly shutdown before tiggering a
- *			forced shudown. Negative value disables the forced
- *			shutdown.
+ * @reason:		Reason of emergency shutdown or reboot to be printed.
+ * @ms_until_forced:	Time to wait for orderly shutdown or reboot before
+ *			triggering it. Negative value disables the forced
+ *			shutdown or reboot.
+ * @shutdown:		If true, indicates that a shutdown will happen
+ *			after the critical tempeature is reached.
+ *			If false, indicates that a reboot will happen
+ *			after the critical tempeature is reached.
  *
- * Initiate an emergency system shutdown in order to protect hardware from
- * further damage. Usage examples include a thermal protection or a voltage or
- * current regulator failures.
- * NOTE: The request is ignored if protection shutdown is already pending even
- * if the previous request has given a large timeout for forced shutdown.
- * Can be called from any context.
+ * Initiate an emergency system shutdown or reboot in order to protect
+ * hardware from further damage. Usage examples include a thermal protection.
+ * NOTE: The request is ignored if protection shutdown or reboot is already
+ * pending even if the previous request has given a large timeout for forced
+ * shutdown/reboot.
  */
-void hw_protection_shutdown(const char *reason, int ms_until_forced)
+void __hw_protection_shutdown(const char *reason, int ms_until_forced, bool shutdown)
 {
 	static atomic_t allow_proceed = ATOMIC_INIT(1);
 
@@ -986,9 +989,12 @@ void hw_protection_shutdown(const char *reason, int ms_until_forced)
 	 * orderly_poweroff failure
 	 */
 	hw_failure_emergency_poweroff(ms_until_forced);
+	if (shutdown)
 		orderly_poweroff(true);
+	else
+		orderly_reboot();
 }
-EXPORT_SYMBOL_GPL(hw_protection_shutdown);
+EXPORT_SYMBOL_GPL(__hw_protection_shutdown);
 
 static int __init reboot_setup(char *str)
 {

tools/thermal/tmon/tui.c

@@ -213,7 +213,7 @@ void show_cooling_device(void)
 		 * cooling device instances. skip unused idr.
 		 */
 		mvwprintw(cooling_device_window, j + 2, 1,
-			"%02d %12.12s%6d %6d",
+			"%02d %12.12s%6lu %6lu",
 			ptdata.cdi[j].instance,
 			ptdata.cdi[j].type,
 			ptdata.cdi[j].cur_state,