Merge branch 'linus' of git://git.kernel.org/pub/scm/linux/kernel/git/evalenti/linux-soc-thermal into thermal-soc

19 files changed, 1061 insertions, 217 deletions

diff --git a/Documentation/devicetree/bindings/thermal/brcm,bcm2835-thermal.txt b/Documentation/devicetree/bindings/thermal/brcm,bcm2835-thermal.txt
index 474531d2b2c5..da8c5b73ad10 100644
--- a/Documentation/devicetree/bindings/thermal/brcm,bcm2835-thermal.txt
+++ b/Documentation/devicetree/bindings/thermal/brcm,bcm2835-thermal.txt
@@ -3,15 +3,39 @@ Binding for Thermal Sensor driver for BCM2835 SoCs.
 Required parameters:
 -------------------
 
-compatible: 	should be one of: "brcm,bcm2835-thermal",
-		"brcm,bcm2836-thermal" or "brcm,bcm2837-thermal"
-reg:		Address range of the thermal registers.
-clocks: 	Phandle of the clock used by the thermal sensor.
+compatible: 		should be one of: "brcm,bcm2835-thermal",
+			"brcm,bcm2836-thermal" or "brcm,bcm2837-thermal"
+reg:			Address range of the thermal registers.
+clocks: 		Phandle of the clock used by the thermal sensor.
+#thermal-sensor-cells:	should be 0 (see thermal.txt)
 
 Example:
 
+thermal-zones {
+	cpu_thermal: cpu-thermal {
+		polling-delay-passive = <0>;
+		polling-delay = <1000>;
+
+		thermal-sensors = <&thermal>;
+
+		trips {
+			cpu-crit {
+				temperature	= <80000>;
+				hysteresis	= <0>;
+				type		= "critical";
+			};
+		};
+
+		coefficients = <(-538)	407000>;
+
+		cooling-maps {
+		};
+	};
+};
+
 thermal: thermal@7e212000 {
 	compatible = "brcm,bcm2835-thermal";
 	reg = <0x7e212000 0x8>;
 	clocks = <&clocks BCM2835_CLOCK_TSENS>;
+	#thermal-sensor-cells = <0>;
 };
diff --git a/Documentation/devicetree/bindings/thermal/brcm,ns-thermal b/Documentation/devicetree/bindings/thermal/brcm,ns-thermal
new file mode 100644
index 000000000000..68e047170039
--- /dev/null
+++ b/Documentation/devicetree/bindings/thermal/brcm,ns-thermal
@@ -0,0 +1,37 @@
+* Broadcom Northstar Thermal
+
+This binding describes thermal sensor that is part of Northstar's DMU (Device
+Management Unit).
+
+Required properties:
+- compatible : Must be "brcm,ns-thermal"
+- reg : iomem address range of PVTMON registers
+- #thermal-sensor-cells : Should be <0>
+
+Example:
+
+thermal: thermal@1800c2c0 {
+	compatible = "brcm,ns-thermal";
+	reg = <0x1800c2c0 0x10>;
+	#thermal-sensor-cells = <0>;
+};
+
+thermal-zones {
+	cpu_thermal: cpu-thermal {
+		polling-delay-passive = <0>;
+		polling-delay = <1000>;
+		coefficients = <(-556) 418000>;
+		thermal-sensors = <&thermal>;
+
+		trips {
+			cpu-crit {
+				temperature	= <125000>;
+				hysteresis	= <0>;
+				type		= "critical";
+			};
+		};
+
+		cooling-maps {
+		};
+	};
+};
diff --git a/Documentation/devicetree/bindings/thermal/da9062-thermal.txt b/Documentation/devicetree/bindings/thermal/da9062-thermal.txt
new file mode 100644
index 000000000000..e241bb5a5584
--- /dev/null
+++ b/Documentation/devicetree/bindings/thermal/da9062-thermal.txt
@@ -0,0 +1,36 @@
+* Dialog DA9062/61 TJUNC Thermal Module
+
+This module is part of the DA9061/DA9062. For more details about entire
+DA9062 and DA9061 chips see Documentation/devicetree/bindings/mfd/da9062.txt
+
+Junction temperature thermal module uses an interrupt signal to identify
+high THERMAL_TRIP_HOT temperatures for the PMIC device.
+
+Required properties:
+
+- compatible: should be one of the following valid compatible string lines:
+        "dlg,da9061-thermal", "dlg,da9062-thermal"
+        "dlg,da9062-thermal"
+
+Optional properties:
+
+- polling-delay-passive : Specify the polling period, measured in
+    milliseconds, between thermal zone device update checks.
+
+Example: DA9062
+
+	pmic0: da9062@58 {
+		thermal {
+			compatible = "dlg,da9062-thermal";
+			polling-delay-passive = <3000>;
+		};
+	};
+
+Example: DA9061 using a fall-back compatible for the DA9062 onkey driver
+
+	pmic0: da9061@58 {
+		thermal {
+			compatible = "dlg,da9061-thermal", "dlg,da9062-thermal";
+			polling-delay-passive = <3000>;
+		};
+	};
diff --git a/drivers/thermal/Kconfig b/drivers/thermal/Kconfig
index 776b34396144..f786ae433032 100644
--- a/drivers/thermal/Kconfig
+++ b/drivers/thermal/Kconfig
@@ -303,6 +303,16 @@ config DB8500_CPUFREQ_COOLING
 	  bound cpufreq cooling device turns active to set CPU frequency low to
 	  cool down the CPU.
 
+config DA9062_THERMAL
+	tristate "DA9062/DA9061 Dialog Semiconductor thermal driver"
+	depends on MFD_DA9062 || COMPILE_TEST
+	depends on OF
+	help
+	  Enable this for the Dialog Semiconductor thermal sensor driver.
+	  This will report PMIC junction over-temperature for one thermal trip
+	  zone.
+	  Compatible with the DA9062 and DA9061 PMICs.
+
 config INTEL_POWERCLAMP
 	tristate "Intel PowerClamp idle injection driver"
 	depends on THERMAL
@@ -392,6 +402,11 @@ config MTK_THERMAL
 	  Enable this option if you want to have support for thermal management
 	  controller present in Mediatek SoCs
 
+menu "Broadcom thermal drivers"
+depends on ARCH_BCM || COMPILE_TEST
+source "drivers/thermal/broadcom/Kconfig"
+endmenu
+
 menu "Texas Instruments thermal drivers"
 depends on ARCH_HAS_BANDGAP || COMPILE_TEST
 depends on HAS_IOMEM
diff --git a/drivers/thermal/Makefile b/drivers/thermal/Makefile
index 7adae2029355..e6834061da28 100644
--- a/drivers/thermal/Makefile
+++ b/drivers/thermal/Makefile
@@ -27,6 +27,7 @@ thermal_sys-$(CONFIG_CLOCK_THERMAL)	+= clock_cooling.o
 thermal_sys-$(CONFIG_DEVFREQ_THERMAL) += devfreq_cooling.o
 
 # platform thermal drivers
+obj-y				+= broadcom/
 obj-$(CONFIG_QCOM_SPMI_TEMP_ALARM)	+= qcom-spmi-temp-alarm.o
 obj-$(CONFIG_SPEAR_THERMAL)	+= spear_thermal.o
 obj-$(CONFIG_ROCKCHIP_THERMAL)	+= rockchip_thermal.o
@@ -42,6 +43,7 @@ obj-$(CONFIG_IMX_THERMAL)	+= imx_thermal.o
 obj-$(CONFIG_MAX77620_THERMAL)	+= max77620_thermal.o
 obj-$(CONFIG_QORIQ_THERMAL)	+= qoriq_thermal.o
 obj-$(CONFIG_DB8500_CPUFREQ_COOLING)	+= db8500_cpufreq_cooling.o
+obj-$(CONFIG_DA9062_THERMAL)	+= da9062-thermal.o
 obj-$(CONFIG_INTEL_POWERCLAMP)	+= intel_powerclamp.o
 obj-$(CONFIG_X86_PKG_TEMP_THERMAL)	+= x86_pkg_temp_thermal.o
 obj-$(CONFIG_INTEL_SOC_DTS_IOSF_CORE)	+= intel_soc_dts_iosf.o
diff --git a/drivers/thermal/broadcom/Kconfig b/drivers/thermal/broadcom/Kconfig
new file mode 100644
index 000000000000..ab08af4654ef
--- /dev/null
+++ b/drivers/thermal/broadcom/Kconfig
@@ -0,0 +1,16 @@
+config BCM2835_THERMAL
+	tristate "Thermal sensors on bcm2835 SoC"
+	depends on ARCH_BCM2835 || COMPILE_TEST
+	depends on HAS_IOMEM
+	depends on THERMAL_OF
+	help
+	  Support for thermal sensors on Broadcom bcm2835 SoCs.
+
+config BCM_NS_THERMAL
+	tristate "Northstar thermal driver"
+	depends on ARCH_BCM_IPROC || COMPILE_TEST
+	help
+	  Northstar is a family of SoCs that includes e.g. BCM4708, BCM47081,
+	  BCM4709 and BCM47094. It contains DMU (Device Management Unit) block
+	  with a thermal sensor that allows checking CPU temperature. This
+	  driver provides support for it.
diff --git a/drivers/thermal/broadcom/Makefile b/drivers/thermal/broadcom/Makefile
new file mode 100644
index 000000000000..c6f62e4fd0ee
--- /dev/null
+++ b/drivers/thermal/broadcom/Makefile
@@ -0,0 +1,2 @@
+obj-$(CONFIG_BCM2835_THERMAL)		+= bcm2835_thermal.o
+obj-$(CONFIG_BCM_NS_THERMAL)		+= ns-thermal.o
diff --git a/drivers/thermal/broadcom/bcm2835_thermal.c b/drivers/thermal/broadcom/bcm2835_thermal.c
new file mode 100644
index 000000000000..0ecf80890c84
--- /dev/null
+++ b/drivers/thermal/broadcom/bcm2835_thermal.c
@@ -0,0 +1,314 @@
+/*
+ * Driver for Broadcom BCM2835 SoC temperature sensor
+ *
+ * Copyright (C) 2016 Martin Sperl
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ */
+
+#include <linux/clk.h>
+#include <linux/debugfs.h>
+#include <linux/device.h>
+#include <linux/err.h>
+#include <linux/io.h>
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/of.h>
+#include <linux/of_address.h>
+#include <linux/of_device.h>
+#include <linux/platform_device.h>
+#include <linux/thermal.h>
+
+#define BCM2835_TS_TSENSCTL			0x00
+#define BCM2835_TS_TSENSSTAT			0x04
+
+#define BCM2835_TS_TSENSCTL_PRWDW		BIT(0)
+#define BCM2835_TS_TSENSCTL_RSTB		BIT(1)
+
+/*
+ * bandgap reference voltage in 6 mV increments
+ * 000b = 1178 mV, 001b = 1184 mV, ... 111b = 1220 mV
+ */
+#define BCM2835_TS_TSENSCTL_CTRL_BITS		3
+#define BCM2835_TS_TSENSCTL_CTRL_SHIFT		2
+#define BCM2835_TS_TSENSCTL_CTRL_MASK		    \
+	GENMASK(BCM2835_TS_TSENSCTL_CTRL_BITS +     \
+		BCM2835_TS_TSENSCTL_CTRL_SHIFT - 1, \
+		BCM2835_TS_TSENSCTL_CTRL_SHIFT)
+#define BCM2835_TS_TSENSCTL_CTRL_DEFAULT	1
+#define BCM2835_TS_TSENSCTL_EN_INT		BIT(5)
+#define BCM2835_TS_TSENSCTL_DIRECT		BIT(6)
+#define BCM2835_TS_TSENSCTL_CLR_INT		BIT(7)
+#define BCM2835_TS_TSENSCTL_THOLD_SHIFT		8
+#define BCM2835_TS_TSENSCTL_THOLD_BITS		10
+#define BCM2835_TS_TSENSCTL_THOLD_MASK		     \
+	GENMASK(BCM2835_TS_TSENSCTL_THOLD_BITS +     \
+		BCM2835_TS_TSENSCTL_THOLD_SHIFT - 1, \
+		BCM2835_TS_TSENSCTL_THOLD_SHIFT)
+/*
+ * time how long the block to be asserted in reset
+ * which based on a clock counter (TSENS clock assumed)
+ */
+#define BCM2835_TS_TSENSCTL_RSTDELAY_SHIFT	18
+#define BCM2835_TS_TSENSCTL_RSTDELAY_BITS	8
+#define BCM2835_TS_TSENSCTL_REGULEN		BIT(26)
+
+#define BCM2835_TS_TSENSSTAT_DATA_BITS		10
+#define BCM2835_TS_TSENSSTAT_DATA_SHIFT		0
+#define BCM2835_TS_TSENSSTAT_DATA_MASK		     \
+	GENMASK(BCM2835_TS_TSENSSTAT_DATA_BITS +     \
+		BCM2835_TS_TSENSSTAT_DATA_SHIFT - 1, \
+		BCM2835_TS_TSENSSTAT_DATA_SHIFT)
+#define BCM2835_TS_TSENSSTAT_VALID		BIT(10)
+#define BCM2835_TS_TSENSSTAT_INTERRUPT		BIT(11)
+
+struct bcm2835_thermal_data {
+	struct thermal_zone_device *tz;
+	void __iomem *regs;
+	struct clk *clk;
+	struct dentry *debugfsdir;
+};
+
+static int bcm2835_thermal_adc2temp(u32 adc, int offset, int slope)
+{
+	return offset + slope * adc;
+}
+
+static int bcm2835_thermal_temp2adc(int temp, int offset, int slope)
+{
+	temp -= offset;
+	temp /= slope;
+
+	if (temp < 0)
+		temp = 0;
+	if (temp >= BIT(BCM2835_TS_TSENSSTAT_DATA_BITS))
+		temp = BIT(BCM2835_TS_TSENSSTAT_DATA_BITS) - 1;
+
+	return temp;
+}
+
+static int bcm2835_thermal_get_temp(void *d, int *temp)
+{
+	struct bcm2835_thermal_data *data = d;
+	u32 val = readl(data->regs + BCM2835_TS_TSENSSTAT);
+
+	if (!(val & BCM2835_TS_TSENSSTAT_VALID))
+		return -EIO;
+
+	val &= BCM2835_TS_TSENSSTAT_DATA_MASK;
+
+	*temp = bcm2835_thermal_adc2temp(
+		val,
+		thermal_zone_get_offset(data->tz),
+		thermal_zone_get_slope(data->tz));
+
+	return 0;
+}
+
+static const struct debugfs_reg32 bcm2835_thermal_regs[] = {
+	{
+		.name = "ctl",
+		.offset = 0
+	},
+	{
+		.name = "stat",
+		.offset = 4
+	}
+};
+
+static void bcm2835_thermal_debugfs(struct platform_device *pdev)
+{
+	struct thermal_zone_device *tz = platform_get_drvdata(pdev);
+	struct bcm2835_thermal_data *data = tz->devdata;
+	struct debugfs_regset32 *regset;
+
+	data->debugfsdir = debugfs_create_dir("bcm2835_thermal", NULL);
+	if (!data->debugfsdir)
+		return;
+
+	regset = devm_kzalloc(&pdev->dev, sizeof(*regset), GFP_KERNEL);
+	if (!regset)
+		return;
+
+	regset->regs = bcm2835_thermal_regs;
+	regset->nregs = ARRAY_SIZE(bcm2835_thermal_regs);
+	regset->base = data->regs;
+
+	debugfs_create_regset32("regset", 0444, data->debugfsdir, regset);
+}
+
+static struct thermal_zone_of_device_ops bcm2835_thermal_ops = {
+	.get_temp = bcm2835_thermal_get_temp,
+};
+
+/*
+ * Note: as per Raspberry Foundation FAQ
+ * (https://www.raspberrypi.org/help/faqs/#performanceOperatingTemperature)
+ * the recommended temperature range for the SoC -40C to +85C
+ * so the trip limit is set to 80C.
+ * this applies to all the BCM283X SoC
+ */
+
+static const struct of_device_id bcm2835_thermal_of_match_table[] = {
+	{
+		.compatible = "brcm,bcm2835-thermal",
+	},
+	{
+		.compatible = "brcm,bcm2836-thermal",
+	},
+	{
+		.compatible = "brcm,bcm2837-thermal",
+	},
+	{},
+};
+MODULE_DEVICE_TABLE(of, bcm2835_thermal_of_match_table);
+
+static int bcm2835_thermal_probe(struct platform_device *pdev)
+{
+	const struct of_device_id *match;
+	struct thermal_zone_device *tz;
+	struct bcm2835_thermal_data *data;
+	struct resource *res;
+	int err = 0;
+	u32 val;
+	unsigned long rate;
+
+	data = devm_kzalloc(&pdev->dev, sizeof(*data), GFP_KERNEL);
+	if (!data)
+		return -ENOMEM;
+
+	match = of_match_device(bcm2835_thermal_of_match_table,
+				&pdev->dev);
+	if (!match)
+		return -EINVAL;
+
+	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+	data->regs = devm_ioremap_resource(&pdev->dev, res);
+	if (IS_ERR(data->regs)) {
+		err = PTR_ERR(data->regs);
+		dev_err(&pdev->dev, "Could not get registers: %d\n", err);
+		return err;
+	}
+
+	data->clk = devm_clk_get(&pdev->dev, NULL);
+	if (IS_ERR(data->clk)) {
+		err = PTR_ERR(data->clk);
+		if (err != -EPROBE_DEFER)
+			dev_err(&pdev->dev, "Could not get clk: %d\n", err);
+		return err;
+	}
+
+	err = clk_prepare_enable(data->clk);
+	if (err)
+		return err;
+
+	rate = clk_get_rate(data->clk);
+	if ((rate < 1920000) || (rate > 5000000))
+		dev_warn(&pdev->dev,
+			 "Clock %pCn running at %pCr Hz is outside of the recommended range: 1.92 to 5MHz\n",
+			 data->clk, data->clk);
+
+	/* register of thermal sensor and get info from DT */
+	tz = thermal_zone_of_sensor_register(&pdev->dev, 0, data,
+					     &bcm2835_thermal_ops);
+	if (IS_ERR(tz)) {
+		err = PTR_ERR(tz);
+		dev_err(&pdev->dev,
+			"Failed to register the thermal device: %d\n",
+			err);
+		goto err_clk;
+	}
+
+	/*
+	 * right now the FW does set up the HW-block, so we are not
+	 * touching the configuration registers.
+	 * But if the HW is not enabled, then set it up
+	 * using "sane" values used by the firmware right now.
+	 */
+	val = readl(data->regs + BCM2835_TS_TSENSCTL);
+	if (!(val & BCM2835_TS_TSENSCTL_RSTB)) {
+		int trip_temp, offset, slope;
+
+		slope = thermal_zone_get_slope(tz);
+		offset = thermal_zone_get_offset(tz);
+		/*
+		 * For now we deal only with critical, otherwise
+		 * would need to iterate
+		 */
+		err = tz->ops->get_trip_temp(tz, 0, &trip_temp);
+		if (err < 0) {
+			err = PTR_ERR(tz);
+			dev_err(&pdev->dev,
+				"Not able to read trip_temp: %d\n",
+				err);
+			goto err_tz;
+		}
+
+		/* set bandgap reference voltage and enable voltage regulator */
+		val = (BCM2835_TS_TSENSCTL_CTRL_DEFAULT <<
+		       BCM2835_TS_TSENSCTL_CTRL_SHIFT) |
+		      BCM2835_TS_TSENSCTL_REGULEN;
+
+		/* use the recommended reset duration */
+		val |= (0xFE << BCM2835_TS_TSENSCTL_RSTDELAY_SHIFT);
+
+		/*  trip_adc value from info */
+		val |= bcm2835_thermal_temp2adc(trip_temp,
+						offset,
+						slope)
+			<< BCM2835_TS_TSENSCTL_THOLD_SHIFT;
+
+		/* write the value back to the register as 2 steps */
+		writel(val, data->regs + BCM2835_TS_TSENSCTL);
+		val |= BCM2835_TS_TSENSCTL_RSTB;
+		writel(val, data->regs + BCM2835_TS_TSENSCTL);
+	}
+
+	data->tz = tz;
+
+	platform_set_drvdata(pdev, tz);
+
+	bcm2835_thermal_debugfs(pdev);
+
+	return 0;
+err_tz:
+	thermal_zone_of_sensor_unregister(&pdev->dev, tz);
+err_clk:
+	clk_disable_unprepare(data->clk);
+
+	return err;
+}
+
+static int bcm2835_thermal_remove(struct platform_device *pdev)
+{
+	struct thermal_zone_device *tz = platform_get_drvdata(pdev);
+	struct bcm2835_thermal_data *data = tz->devdata;
+
+	debugfs_remove_recursive(data->debugfsdir);
+	thermal_zone_of_sensor_unregister(&pdev->dev, tz);
+	clk_disable_unprepare(data->clk);
+
+	return 0;
+}
+
+static struct platform_driver bcm2835_thermal_driver = {
+	.probe = bcm2835_thermal_probe,
+	.remove = bcm2835_thermal_remove,
+	.driver = {
+		.name = "bcm2835_thermal",
+		.of_match_table = bcm2835_thermal_of_match_table,
+	},
+};
+module_platform_driver(bcm2835_thermal_driver);
+
+MODULE_AUTHOR("Martin Sperl");
+MODULE_DESCRIPTION("Thermal driver for bcm2835 chip");
+MODULE_LICENSE("GPL");
diff --git a/drivers/thermal/broadcom/ns-thermal.c b/drivers/thermal/broadcom/ns-thermal.c
new file mode 100644
index 000000000000..322e741a2463
--- /dev/null
+++ b/drivers/thermal/broadcom/ns-thermal.c
@@ -0,0 +1,106 @@
+/*
+ * Copyright (C) 2017 Rafał Miłecki <rafal@milecki.pl>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#include <linux/module.h>
+#include <linux/of_address.h>
+#include <linux/platform_device.h>
+#include <linux/thermal.h>
+
+#define PVTMON_CONTROL0					0x00
+#define PVTMON_CONTROL0_SEL_MASK			0x0000000e
+#define PVTMON_CONTROL0_SEL_TEMP_MONITOR		0x00000000
+#define PVTMON_CONTROL0_SEL_TEST_MODE			0x0000000e
+#define PVTMON_STATUS					0x08
+
+struct ns_thermal {
+	struct thermal_zone_device *tz;
+	void __iomem *pvtmon;
+};
+
+static int ns_thermal_get_temp(void *data, int *temp)
+{
+	struct ns_thermal *ns_thermal = data;
+	int offset = thermal_zone_get_offset(ns_thermal->tz);
+	int slope = thermal_zone_get_slope(ns_thermal->tz);
+	u32 val;
+
+	val = readl(ns_thermal->pvtmon + PVTMON_CONTROL0);
+	if ((val & PVTMON_CONTROL0_SEL_MASK) != PVTMON_CONTROL0_SEL_TEMP_MONITOR) {
+		/* Clear current mode selection */
+		val &= ~PVTMON_CONTROL0_SEL_MASK;
+
+		/* Set temp monitor mode (it's the default actually) */
+		val |= PVTMON_CONTROL0_SEL_TEMP_MONITOR;
+
+		writel(val, ns_thermal->pvtmon + PVTMON_CONTROL0);
+	}
+
+	val = readl(ns_thermal->pvtmon + PVTMON_STATUS);
+	*temp = slope * val + offset;
+
+	return 0;
+}
+
+static const struct thermal_zone_of_device_ops ns_thermal_ops = {
+	.get_temp = ns_thermal_get_temp,
+};
+
+static int ns_thermal_probe(struct platform_device *pdev)
+{
+	struct device *dev = &pdev->dev;
+	struct ns_thermal *ns_thermal;
+
+	ns_thermal = devm_kzalloc(dev, sizeof(*ns_thermal), GFP_KERNEL);
+	if (!ns_thermal)
+		return -ENOMEM;
+
+	ns_thermal->pvtmon = of_iomap(dev_of_node(dev), 0);
+	if (WARN_ON(!ns_thermal->pvtmon))
+		return -ENOENT;
+
+	ns_thermal->tz = devm_thermal_zone_of_sensor_register(dev, 0,
+							      ns_thermal,
+							      &ns_thermal_ops);
+	if (IS_ERR(ns_thermal->tz)) {
+		iounmap(ns_thermal->pvtmon);
+		return PTR_ERR(ns_thermal->tz);
+	}
+
+	platform_set_drvdata(pdev, ns_thermal);
+
+	return 0;
+}
+
+static int ns_thermal_remove(struct platform_device *pdev)
+{
+	struct ns_thermal *ns_thermal = platform_get_drvdata(pdev);
+
+	iounmap(ns_thermal->pvtmon);
+
+	return 0;
+}
+
+static const struct of_device_id ns_thermal_of_match[] = {
+	{ .compatible = "brcm,ns-thermal", },
+	{},
+};
+MODULE_DEVICE_TABLE(of, ns_thermal_of_match);
+
+static struct platform_driver ns_thermal_driver = {
+	.probe		= ns_thermal_probe,
+	.remove		= ns_thermal_remove,
+	.driver = {
+		.name = "ns-thermal",
+		.of_match_table = ns_thermal_of_match,
+	},
+};
+module_platform_driver(ns_thermal_driver);
+
+MODULE_AUTHOR("Rafał Miłecki <rafal@milecki.pl>");
+MODULE_DESCRIPTION("Northstar thermal driver");
+MODULE_LICENSE("GPL v2");
diff --git a/drivers/thermal/da9062-thermal.c b/drivers/thermal/da9062-thermal.c
new file mode 100644
index 000000000000..dd8dd947b7f0
--- /dev/null
+++ b/drivers/thermal/da9062-thermal.c
@@ -0,0 +1,315 @@
+/*
+ * Thermal device driver for DA9062 and DA9061
+ * Copyright (C) 2017  Dialog Semiconductor
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ */
+
+/* When over-temperature is reached, an interrupt from the device will be
+ * triggered. Following this event the interrupt will be disabled and
+ * periodic transmission of uevents (HOT trip point) should define the
+ * first level of temperature supervision. It is expected that any final
+ * implementation of the thermal driver will include a .notify() function
+ * to implement these uevents to userspace.
+ *
+ * These uevents are intended to indicate non-invasive temperature control
+ * of the system, where the necessary measures for cooling are the
+ * responsibility of the host software. Once the temperature falls again,
+ * the IRQ is re-enabled so the start of a new over-temperature event can
+ * be detected without constant software monitoring.
+ */
+
+#include <linux/errno.h>
+#include <linux/interrupt.h>
+#include <linux/module.h>
+#include <linux/of.h>
+#include <linux/platform_device.h>
+#include <linux/regmap.h>
+#include <linux/thermal.h>
+#include <linux/workqueue.h>
+
+#include <linux/mfd/da9062/core.h>
+#include <linux/mfd/da9062/registers.h>
+
+/* Minimum, maximum and default polling millisecond periods are provided
+ * here as an example. It is expected that any final implementation to also
+ * include a modification of these settings to match the required
+ * application.
+ */
+#define DA9062_DEFAULT_POLLING_MS_PERIOD	3000
+#define DA9062_MAX_POLLING_MS_PERIOD		10000
+#define DA9062_MIN_POLLING_MS_PERIOD		1000
+
+#define DA9062_MILLI_CELSIUS(t)			((t) * 1000)
+
+struct da9062_thermal_config {
+	const char *name;
+};
+
+struct da9062_thermal {
+	struct da9062 *hw;
+	struct delayed_work work;
+	struct thermal_zone_device *zone;
+	enum thermal_device_mode mode;
+	struct mutex lock; /* protection for da9062_thermal temperature */
+	int temperature;
+	int irq;
+	const struct da9062_thermal_config *config;
+	struct device *dev;
+};
+
+static void da9062_thermal_poll_on(struct work_struct *work)
+{
+	struct da9062_thermal *thermal = container_of(work,
+						struct da9062_thermal,
+						work.work);
+	unsigned long delay;
+	unsigned int val;
+	int ret;
+
+	/* clear E_TEMP */
+	ret = regmap_write(thermal->hw->regmap,
+			   DA9062AA_EVENT_B,
+			   DA9062AA_E_TEMP_MASK);
+	if (ret < 0) {
+		dev_err(thermal->dev,
+			"Cannot clear the TJUNC temperature status\n");
+		goto err_enable_irq;
+	}
+
+	/* Now read E_TEMP again: it is acting like a status bit.
+	 * If over-temperature, then this status will be true.
+	 * If not over-temperature, this status will be false.
+	 */
+	ret = regmap_read(thermal->hw->regmap,
+			  DA9062AA_EVENT_B,
+			  &val);
+	if (ret < 0) {
+		dev_err(thermal->dev,
+			"Cannot check the TJUNC temperature status\n");
+		goto err_enable_irq;
+	}
+
+	if (val & DA9062AA_E_TEMP_MASK) {
+		mutex_lock(&thermal->lock);
+		thermal->temperature = DA9062_MILLI_CELSIUS(125);
+		mutex_unlock(&thermal->lock);
+		thermal_zone_device_update(thermal->zone,
+					   THERMAL_EVENT_UNSPECIFIED);
+
+		delay = msecs_to_jiffies(thermal->zone->passive_delay);
+		schedule_delayed_work(&thermal->work, delay);
+		return;
+	}
+
+	mutex_lock(&thermal->lock);
+	thermal->temperature = DA9062_MILLI_CELSIUS(0);
+	mutex_unlock(&thermal->lock);
+	thermal_zone_device_update(thermal->zone,
+				   THERMAL_EVENT_UNSPECIFIED);
+
+err_enable_irq:
+	enable_irq(thermal->irq);
+}
+
+static irqreturn_t da9062_thermal_irq_handler(int irq, void *data)
+{
+	struct da9062_thermal *thermal = data;
+
+	disable_irq_nosync(thermal->irq);
+	schedule_delayed_work(&thermal->work, 0);
+
+	return IRQ_HANDLED;
+}
+
+static int da9062_thermal_get_mode(struct thermal_zone_device *z,
+				   enum thermal_device_mode *mode)
+{
+	struct da9062_thermal *thermal = z->devdata;
+	*mode = thermal->mode;
+	return 0;
+}
+
+static int da9062_thermal_get_trip_type(struct thermal_zone_device *z,
+					int trip,
+					enum thermal_trip_type *type)
+{
+	struct da9062_thermal *thermal = z->devdata;
+
+	switch (trip) {
+	case 0:
+		*type = THERMAL_TRIP_HOT;
+		break;
+	default:
+		dev_err(thermal->dev,
+			"Driver does not support more than 1 trip-wire\n");
+		return -EINVAL;
+	}
+
+	return 0;
+}
+
+static int da9062_thermal_get_trip_temp(struct thermal_zone_device *z,
+					int trip,
+					int *temp)
+{
+	struct da9062_thermal *thermal = z->devdata;
+
+	switch (trip) {
+	case 0:
+		*temp = DA9062_MILLI_CELSIUS(125);
+		break;
+	default:
+		dev_err(thermal->dev,
+			"Driver does not support more than 1 trip-wire\n");
+		return -EINVAL;
+	}
+
+	return 0;
+}
+
+static int da9062_thermal_get_temp(struct thermal_zone_device *z,
+				   int *temp)
+{
+	struct da9062_thermal *thermal = z->devdata;
+
+	mutex_lock(&thermal->lock);
+	*temp = thermal->temperature;
+	mutex_unlock(&thermal->lock);
+
+	return 0;
+}
+
+static struct thermal_zone_device_ops da9062_thermal_ops = {
+	.get_temp	= da9062_thermal_get_temp,
+	.get_mode	= da9062_thermal_get_mode,
+	.get_trip_type	= da9062_thermal_get_trip_type,
+	.get_trip_temp	= da9062_thermal_get_trip_temp,
+};
+
+static const struct da9062_thermal_config da9062_config = {
+	.name = "da9062-thermal",
+};
+
+static const struct of_device_id da9062_compatible_reg_id_table[] = {
+	{ .compatible = "dlg,da9062-thermal", .data = &da9062_config },
+	{ },
+};
+
+MODULE_DEVICE_TABLE(of, da9062_compatible_reg_id_table);
+
+static int da9062_thermal_probe(struct platform_device *pdev)
+{
+	struct da9062 *chip = dev_get_drvdata(pdev->dev.parent);
+	struct da9062_thermal *thermal;
+	unsigned int pp_tmp = DA9062_DEFAULT_POLLING_MS_PERIOD;
+	const struct of_device_id *match;
+	int ret = 0;
+
+	match = of_match_node(da9062_compatible_reg_id_table,
+			      pdev->dev.of_node);
+	if (!match)
+		return -ENXIO;
+
+	if (pdev->dev.of_node) {
+		if (!of_property_read_u32(pdev->dev.of_node,
+					  "polling-delay-passive",
+					  &pp_tmp)) {
+			if (pp_tmp < DA9062_MIN_POLLING_MS_PERIOD ||
+			    pp_tmp > DA9062_MAX_POLLING_MS_PERIOD) {
+				dev_warn(&pdev->dev,
+					 "Out-of-range polling period %d ms\n",
+					 pp_tmp);
+				pp_tmp = DA9062_DEFAULT_POLLING_MS_PERIOD;
+			}
+		}
+	}
+
+	thermal = devm_kzalloc(&pdev->dev, sizeof(struct da9062_thermal),
+			       GFP_KERNEL);
+	if (!thermal) {
+		ret = -ENOMEM;
+		goto err;
+	}
+
+	thermal->config = match->data;
+	thermal->hw = chip;
+	thermal->mode = THERMAL_DEVICE_ENABLED;
+	thermal->dev = &pdev->dev;
+
+	INIT_DELAYED_WORK(&thermal->work, da9062_thermal_poll_on);
+	mutex_init(&thermal->lock);
+
+	thermal->zone = thermal_zone_device_register(thermal->config->name,
+					1, 0, thermal,
+					&da9062_thermal_ops, NULL, pp_tmp,
+					0);
+	if (IS_ERR(thermal->zone)) {
+		dev_err(&pdev->dev, "Cannot register thermal zone device\n");
+		ret = PTR_ERR(thermal->zone);
+		goto err;
+	}
+
+	dev_dbg(&pdev->dev,
+		"TJUNC temperature polling period set at %d ms\n",
+		thermal->zone->passive_delay);
+
+	ret = platform_get_irq_byname(pdev, "THERMAL");
+	if (ret < 0) {
+		dev_err(&pdev->dev, "Failed to get platform IRQ.\n");
+		goto err_zone;
+	}
+	thermal->irq = ret;
+
+	ret = request_threaded_irq(thermal->irq, NULL,
+				   da9062_thermal_irq_handler,
+				   IRQF_TRIGGER_LOW | IRQF_ONESHOT,
+				   "THERMAL", thermal);
+	if (ret) {
+		dev