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* [PATCH V15 1/5] dt-bindings: fsl: scu: add thermal binding
@ 2019-06-18  2:18 Anson.Huang
  2019-06-18  2:18 ` [PATCH V15 2/5] thermal: of-thermal: add API for getting sensor ID from DT Anson.Huang
                   ` (4 more replies)
  0 siblings, 5 replies; 6+ messages in thread
From: Anson.Huang @ 2019-06-18  2:18 UTC (permalink / raw)
  To: robh+dt, mark.rutland, corbet, shawnguo, s.hauer, kernel,
	festevam, catalin.marinas, will.deacon, rui.zhang, edubezval,
	daniel.lezcano, aisheng.dong, ulf.hansson, peng.fan,
	mchehab+samsung, linux, daniel.baluta, maxime.ripard,
	horms+renesas, olof, jagan, bjorn.andersson, leonard.crestez,
	dinguyen, enric.balletbo, devicetree, linux-kernel, linux-doc,
	linux-arm-kernel, linux-pm
  Cc: Linux-imx

From: Anson Huang <Anson.Huang@nxp.com>

NXP i.MX8QXP is an ARMv8 SoC with a Cortex-M4 core inside as
system controller, the system controller is in charge of system
power, clock and thermal sensors etc. management, Linux kernel
has to communicate with system controller via MU (message unit)
IPC to get temperature from thermal sensors, this patch adds
binding doc for i.MX system controller thermal driver.

Signed-off-by: Anson Huang <Anson.Huang@nxp.com>
Reviewed-by: Rob Herring <robh@kernel.org>
Reviewed-by: Dong Aisheng <aisheng.dong@nxp.com>
---
No change.
---
 .../devicetree/bindings/arm/freescale/fsl,scu.txt        | 16 ++++++++++++++++
 1 file changed, 16 insertions(+)

diff --git a/Documentation/devicetree/bindings/arm/freescale/fsl,scu.txt b/Documentation/devicetree/bindings/arm/freescale/fsl,scu.txt
index a575e42..fc3844e 100644
--- a/Documentation/devicetree/bindings/arm/freescale/fsl,scu.txt
+++ b/Documentation/devicetree/bindings/arm/freescale/fsl,scu.txt
@@ -155,6 +155,17 @@ Required properties:
 Optional properties:
 - timeout-sec: contains the watchdog timeout in seconds.
 
+Thermal bindings based on SCU Message Protocol
+------------------------------------------------------------
+
+Required properties:
+- compatible:			Should be :
+				  "fsl,imx8qxp-sc-thermal"
+				followed by "fsl,imx-sc-thermal";
+
+- #thermal-sensor-cells:	See Documentation/devicetree/bindings/thermal/thermal.txt
+				for a description.
+
 Example (imx8qxp):
 -------------
 aliases {
@@ -222,6 +233,11 @@ firmware {
 			compatible = "fsl,imx8qxp-sc-wdt", "fsl,imx-sc-wdt";
 			timeout-sec = <60>;
 		};
+
+		tsens: thermal-sensor {
+			compatible = "fsl,imx8qxp-sc-thermal", "fsl,imx-sc-thermal";
+			#thermal-sensor-cells = <1>;
+		};
 	};
 };
 
-- 
2.7.4


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^ permalink raw reply	[flat|nested] 6+ messages in thread

* [PATCH V15 2/5] thermal: of-thermal: add API for getting sensor ID from DT
  2019-06-18  2:18 [PATCH V15 1/5] dt-bindings: fsl: scu: add thermal binding Anson.Huang
@ 2019-06-18  2:18 ` Anson.Huang
  2019-06-18  2:18 ` [PATCH V15 3/5] thermal: imx_sc: add i.MX system controller thermal support Anson.Huang
                   ` (3 subsequent siblings)
  4 siblings, 0 replies; 6+ messages in thread
From: Anson.Huang @ 2019-06-18  2:18 UTC (permalink / raw)
  To: robh+dt, mark.rutland, corbet, shawnguo, s.hauer, kernel,
	festevam, catalin.marinas, will.deacon, rui.zhang, edubezval,
	daniel.lezcano, aisheng.dong, ulf.hansson, peng.fan,
	mchehab+samsung, linux, daniel.baluta, maxime.ripard,
	horms+renesas, olof, jagan, bjorn.andersson, leonard.crestez,
	dinguyen, enric.balletbo, devicetree, linux-kernel, linux-doc,
	linux-arm-kernel, linux-pm
  Cc: Linux-imx

From: Anson Huang <Anson.Huang@nxp.com>

This patch adds new API thermal_zone_of_get_sensor_id() to
provide the feature of getting sensor ID from DT thermal
zone's node. It's useful for thermal driver to register the
specific thermal zone devices from DT in a common way.

Signed-off-by: Anson Huang <Anson.Huang@nxp.com>
Reviewed-by: Dong Aisheng <aisheng.dong@nxp.com>
---
Changes since V14:
	- improve the commit message, document and comment, no code change.
---
 Documentation/thermal/sysfs-api.txt |  8 +++++
 drivers/thermal/of-thermal.c        | 65 ++++++++++++++++++++++++++++---------
 include/linux/thermal.h             | 10 ++++++
 3 files changed, 67 insertions(+), 16 deletions(-)

diff --git a/Documentation/thermal/sysfs-api.txt b/Documentation/thermal/sysfs-api.txt
index c3fa500..5d3f84e 100644
--- a/Documentation/thermal/sysfs-api.txt
+++ b/Documentation/thermal/sysfs-api.txt
@@ -159,6 +159,14 @@ temperature) and throttle appropriate devices.
 	for the thermal zone device, which might be useful for platform
 	drivers for temperature calculations.
 
+1.1.9 int thermal_zone_of_get_sensor_id(struct device_node *tz_np,
+		struct device_node *sensor_np,
+		u32 *id)
+
+	This interface is used to get the sensor id from the given thermal
+	zone in DT, which might be useful for thermal drivers to register
+	specific thermal zone device in a common way.
+
 1.2 thermal cooling device interface
 1.2.1 struct thermal_cooling_device *thermal_cooling_device_register(char *name,
 		void *devdata, struct thermal_cooling_device_ops *)
diff --git a/drivers/thermal/of-thermal.c b/drivers/thermal/of-thermal.c
index dc5093b..2422cc4 100644
--- a/drivers/thermal/of-thermal.c
+++ b/drivers/thermal/of-thermal.c
@@ -449,6 +449,53 @@ thermal_zone_of_add_sensor(struct device_node *zone,
 }
 
 /**
+ * thermal_zone_of_get_sensor_id - get sensor ID from a DT thermal zone
+ * @tz_np: a valid thermal zone device node.
+ * @sensor_np: a sensor node of a valid sensor device.
+ * @id: the sensor ID returned if success.
+ *
+ * This function will get sensor ID from a given thermal zone node and
+ * the sensor node must match the temperature provider @sensor_np.
+ *
+ * Return: 0 on success, proper error code otherwise.
+ */
+
+int thermal_zone_of_get_sensor_id(struct device_node *tz_np,
+				  struct device_node *sensor_np,
+				  u32 *id)
+{
+	struct of_phandle_args sensor_specs;
+	int ret;
+
+	ret = of_parse_phandle_with_args(tz_np,
+					 "thermal-sensors",
+					 "#thermal-sensor-cells",
+					 0,
+					 &sensor_specs);
+	if (ret)
+		return ret;
+
+	if (sensor_specs.np != sensor_np) {
+		of_node_put(sensor_specs.np);
+		return -ENODEV;
+	}
+
+	if (sensor_specs.args_count >= 1) {
+		*id = sensor_specs.args[0];
+		WARN(sensor_specs.args_count > 1,
+		     "%pOFn: too many cells in sensor specifier %d\n",
+		     sensor_specs.np, sensor_specs.args_count);
+	} else {
+		*id = 0;
+	}
+
+	of_node_put(sensor_specs.np);
+
+	return 0;
+}
+EXPORT_SYMBOL_GPL(thermal_zone_of_get_sensor_id);
+
+/**
  * thermal_zone_of_sensor_register - registers a sensor to a DT thermal zone
  * @dev: a valid struct device pointer of a sensor device. Must contain
  *       a valid .of_node, for the sensor node.
@@ -499,36 +546,22 @@ thermal_zone_of_sensor_register(struct device *dev, int sensor_id, void *data,
 	sensor_np = of_node_get(dev->of_node);
 
 	for_each_available_child_of_node(np, child) {
-		struct of_phandle_args sensor_specs;
 		int ret, id;
 
 		/* For now, thermal framework supports only 1 sensor per zone */
-		ret = of_parse_phandle_with_args(child, "thermal-sensors",
-						 "#thermal-sensor-cells",
-						 0, &sensor_specs);
+		ret = thermal_zone_of_get_sensor_id(child, sensor_np, &id);
 		if (ret)
 			continue;
 
-		if (sensor_specs.args_count >= 1) {
-			id = sensor_specs.args[0];
-			WARN(sensor_specs.args_count > 1,
-			     "%pOFn: too many cells in sensor specifier %d\n",
-			     sensor_specs.np, sensor_specs.args_count);
-		} else {
-			id = 0;
-		}
-
-		if (sensor_specs.np == sensor_np && id == sensor_id) {
+		if (id == sensor_id) {
 			tzd = thermal_zone_of_add_sensor(child, sensor_np,
 							 data, ops);
 			if (!IS_ERR(tzd))
 				tzd->ops->set_mode(tzd, THERMAL_DEVICE_ENABLED);
 
-			of_node_put(sensor_specs.np);
 			of_node_put(child);
 			goto exit;
 		}
-		of_node_put(sensor_specs.np);
 	}
 exit:
 	of_node_put(sensor_np);
diff --git a/include/linux/thermal.h b/include/linux/thermal.h
index 15a4ca5..5edffe6 100644
--- a/include/linux/thermal.h
+++ b/include/linux/thermal.h
@@ -375,6 +375,9 @@ struct thermal_trip {
 
 /* Function declarations */
 #ifdef CONFIG_THERMAL_OF
+int thermal_zone_of_get_sensor_id(struct device_node *tz_np,
+				  struct device_node *sensor_np,
+				  u32 *id);
 struct thermal_zone_device *
 thermal_zone_of_sensor_register(struct device *dev, int id, void *data,
 				const struct thermal_zone_of_device_ops *ops);
@@ -386,6 +389,13 @@ struct thermal_zone_device *devm_thermal_zone_of_sensor_register(
 void devm_thermal_zone_of_sensor_unregister(struct device *dev,
 					    struct thermal_zone_device *tz);
 #else
+
+static int thermal_zone_of_get_sensor_id(struct device_node *tz_np,
+					 struct device_node *sensor_np,
+					 u32 *id)
+{
+	return -ENOENT;
+}
 static inline struct thermal_zone_device *
 thermal_zone_of_sensor_register(struct device *dev, int id, void *data,
 				const struct thermal_zone_of_device_ops *ops)
-- 
2.7.4


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linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel

^ permalink raw reply	[flat|nested] 6+ messages in thread

* [PATCH V15 3/5] thermal: imx_sc: add i.MX system controller thermal support
  2019-06-18  2:18 [PATCH V15 1/5] dt-bindings: fsl: scu: add thermal binding Anson.Huang
  2019-06-18  2:18 ` [PATCH V15 2/5] thermal: of-thermal: add API for getting sensor ID from DT Anson.Huang
@ 2019-06-18  2:18 ` Anson.Huang
  2019-06-18  2:18 ` [PATCH V15 4/5] defconfig: arm64: " Anson.Huang
                   ` (2 subsequent siblings)
  4 siblings, 0 replies; 6+ messages in thread
From: Anson.Huang @ 2019-06-18  2:18 UTC (permalink / raw)
  To: robh+dt, mark.rutland, corbet, shawnguo, s.hauer, kernel,
	festevam, catalin.marinas, will.deacon, rui.zhang, edubezval,
	daniel.lezcano, aisheng.dong, ulf.hansson, peng.fan,
	mchehab+samsung, linux, daniel.baluta, maxime.ripard,
	horms+renesas, olof, jagan, bjorn.andersson, leonard.crestez,
	dinguyen, enric.balletbo, devicetree, linux-kernel, linux-doc,
	linux-arm-kernel, linux-pm
  Cc: Linux-imx

From: Anson Huang <Anson.Huang@nxp.com>

i.MX8QXP is an ARMv8 SoC which has a Cortex-M4 system controller
inside, the system controller is in charge of controlling power,
clock and thermal sensors etc..

This patch adds i.MX system controller thermal driver support,
Linux kernel has to communicate with system controller via MU
(message unit) IPC to get each thermal sensor's temperature,
it supports multiple sensors which are passed from device tree,
please see the binding doc for details.

Signed-off-by: Anson Huang <Anson.Huang@nxp.com>
---
No change.
---
 drivers/thermal/Kconfig          |  11 +++
 drivers/thermal/Makefile         |   1 +
 drivers/thermal/imx_sc_thermal.c | 142 +++++++++++++++++++++++++++++++++++++++
 3 files changed, 154 insertions(+)
 create mode 100644 drivers/thermal/imx_sc_thermal.c

diff --git a/drivers/thermal/Kconfig b/drivers/thermal/Kconfig
index 9966364..454cbe5 100644
--- a/drivers/thermal/Kconfig
+++ b/drivers/thermal/Kconfig
@@ -233,6 +233,17 @@ config IMX_THERMAL
 	  cpufreq is used as the cooling device to throttle CPUs when the
 	  passive trip is crossed.
 
+config IMX_SC_THERMAL
+	tristate "Temperature sensor driver for NXP i.MX SoCs with System Controller"
+	depends on ARCH_MXC && IMX_SCU
+	depends on OF
+	help
+	  Support for Temperature Monitor (TEMPMON) found on NXP i.MX SoCs with
+	  system controller inside, Linux kernel has to communicate with system
+	  controller via MU (message unit) IPC to get temperature from thermal
+	  sensor. It supports one critical trip point and one
+	  passive trip point for each thermal sensor.
+
 config MAX77620_THERMAL
 	tristate "Temperature sensor driver for Maxim MAX77620 PMIC"
 	depends on MFD_MAX77620
diff --git a/drivers/thermal/Makefile b/drivers/thermal/Makefile
index 74a37c7..717a1ba 100644
--- a/drivers/thermal/Makefile
+++ b/drivers/thermal/Makefile
@@ -41,6 +41,7 @@ obj-$(CONFIG_DB8500_THERMAL)	+= db8500_thermal.o
 obj-$(CONFIG_ARMADA_THERMAL)	+= armada_thermal.o
 obj-$(CONFIG_TANGO_THERMAL)	+= tango_thermal.o
 obj-$(CONFIG_IMX_THERMAL)	+= imx_thermal.o
+obj-$(CONFIG_IMX_SC_THERMAL)	+= imx_sc_thermal.o
 obj-$(CONFIG_MAX77620_THERMAL)	+= max77620_thermal.o
 obj-$(CONFIG_QORIQ_THERMAL)	+= qoriq_thermal.o
 obj-$(CONFIG_DA9062_THERMAL)	+= da9062-thermal.o
diff --git a/drivers/thermal/imx_sc_thermal.c b/drivers/thermal/imx_sc_thermal.c
new file mode 100644
index 0000000..d406ecb
--- /dev/null
+++ b/drivers/thermal/imx_sc_thermal.c
@@ -0,0 +1,142 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * Copyright 2018-2019 NXP.
+ */
+
+#include <linux/err.h>
+#include <linux/firmware/imx/sci.h>
+#include <linux/firmware/imx/types.h>
+#include <linux/module.h>
+#include <linux/of.h>
+#include <linux/of_device.h>
+#include <linux/platform_device.h>
+#include <linux/slab.h>
+#include <linux/thermal.h>
+
+#include "thermal_core.h"
+
+#define IMX_SC_MISC_FUNC_GET_TEMP	13
+
+static struct imx_sc_ipc *thermal_ipc_handle;
+
+struct imx_sc_sensor {
+	struct thermal_zone_device *tzd;
+	u32 resource_id;
+};
+
+struct req_get_temp {
+	u16 resource_id;
+	u8 type;
+} __packed;
+
+struct resp_get_temp {
+	u16 celsius;
+	u8 tenths;
+} __packed;
+
+struct imx_sc_msg_misc_get_temp {
+	struct imx_sc_rpc_msg hdr;
+	union {
+		struct req_get_temp req;
+		struct resp_get_temp resp;
+	} data;
+};
+
+static int imx_sc_thermal_get_temp(void *data, int *temp)
+{
+	struct imx_sc_msg_misc_get_temp msg;
+	struct imx_sc_rpc_msg *hdr = &msg.hdr;
+	struct imx_sc_sensor *sensor = data;
+	int ret;
+
+	msg.data.req.resource_id = sensor->resource_id;
+	msg.data.req.type = IMX_SC_C_TEMP;
+
+	hdr->ver = IMX_SC_RPC_VERSION;
+	hdr->svc = IMX_SC_RPC_SVC_MISC;
+	hdr->func = IMX_SC_MISC_FUNC_GET_TEMP;
+	hdr->size = 2;
+
+	ret = imx_scu_call_rpc(thermal_ipc_handle, &msg, true);
+	if (ret) {
+		dev_err(&sensor->tzd->device, "read temp sensor %d failed, ret %d\n",
+			sensor->resource_id, ret);
+		return ret;
+	}
+
+	*temp = msg.data.resp.celsius * 1000 + msg.data.resp.tenths * 100;
+
+	return 0;
+}
+
+static const struct thermal_zone_of_device_ops imx_sc_thermal_ops = {
+	.get_temp = imx_sc_thermal_get_temp,
+};
+
+static int imx_sc_thermal_probe(struct platform_device *pdev)
+{
+	struct device_node *np, *child, *sensor_np;
+	struct imx_sc_sensor *sensor;
+	int ret;
+
+	ret = imx_scu_get_handle(&thermal_ipc_handle);
+	if (ret)
+		return ret;
+
+	np = of_find_node_by_name(NULL, "thermal-zones");
+	if (!np)
+		return -ENODEV;
+
+	sensor_np = of_node_get(pdev->dev.of_node);
+
+	for_each_available_child_of_node(np, child) {
+		sensor = devm_kzalloc(&pdev->dev, sizeof(*sensor), GFP_KERNEL);
+		if (!sensor) {
+			of_node_put(sensor_np);
+			return -ENOMEM;
+		}
+
+		ret = thermal_zone_of_get_sensor_id(child,
+						    sensor_np,
+						    &sensor->resource_id);
+		if (ret < 0) {
+			dev_err(&pdev->dev,
+				"failed to get valid sensor resource id: %d\n",
+				ret);
+			break;
+		}
+
+		sensor->tzd = devm_thermal_zone_of_sensor_register(&pdev->dev,
+								   sensor->resource_id,
+								   sensor,
+								   &imx_sc_thermal_ops);
+		if (IS_ERR(sensor->tzd)) {
+			dev_err(&pdev->dev, "failed to register thermal zone\n");
+			ret = PTR_ERR(sensor->tzd);
+			break;
+		}
+	}
+
+	of_node_put(sensor_np);
+
+	return ret;
+}
+
+static const struct of_device_id imx_sc_thermal_table[] = {
+	{ .compatible = "fsl,imx-sc-thermal", },
+	{}
+};
+MODULE_DEVICE_TABLE(of, imx_sc_thermal_table);
+
+static struct platform_driver imx_sc_thermal_driver = {
+		.probe = imx_sc_thermal_probe,
+		.driver = {
+			.name = "imx-sc-thermal",
+			.of_match_table = imx_sc_thermal_table,
+		},
+};
+module_platform_driver(imx_sc_thermal_driver);
+
+MODULE_AUTHOR("Anson Huang <Anson.Huang@nxp.com>");
+MODULE_DESCRIPTION("Thermal driver for NXP i.MX SoCs with system controller");
+MODULE_LICENSE("GPL v2");
-- 
2.7.4


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^ permalink raw reply	[flat|nested] 6+ messages in thread

* [PATCH V15 4/5] defconfig: arm64: add i.MX system controller thermal support
  2019-06-18  2:18 [PATCH V15 1/5] dt-bindings: fsl: scu: add thermal binding Anson.Huang
  2019-06-18  2:18 ` [PATCH V15 2/5] thermal: of-thermal: add API for getting sensor ID from DT Anson.Huang
  2019-06-18  2:18 ` [PATCH V15 3/5] thermal: imx_sc: add i.MX system controller thermal support Anson.Huang
@ 2019-06-18  2:18 ` " Anson.Huang
  2019-06-18  2:18 ` [PATCH V15 5/5] arm64: dts: imx: add i.MX8QXP " Anson.Huang
  2019-06-24  8:04 ` [PATCH V15 1/5] dt-bindings: fsl: scu: add thermal binding Anson Huang
  4 siblings, 0 replies; 6+ messages in thread
From: Anson.Huang @ 2019-06-18  2:18 UTC (permalink / raw)
  To: robh+dt, mark.rutland, corbet, shawnguo, s.hauer, kernel,
	festevam, catalin.marinas, will.deacon, rui.zhang, edubezval,
	daniel.lezcano, aisheng.dong, ulf.hansson, peng.fan,
	mchehab+samsung, linux, daniel.baluta, maxime.ripard,
	horms+renesas, olof, jagan, bjorn.andersson, leonard.crestez,
	dinguyen, enric.balletbo, devicetree, linux-kernel, linux-doc,
	linux-arm-kernel, linux-pm
  Cc: Linux-imx

From: Anson Huang <Anson.Huang@nxp.com>

This patch enables CONFIG_IMX_SC_THERMAL as module.

Signed-off-by: Anson Huang <Anson.Huang@nxp.com>
---
No change.
---
 arch/arm64/configs/defconfig | 1 +
 1 file changed, 1 insertion(+)

diff --git a/arch/arm64/configs/defconfig b/arch/arm64/configs/defconfig
index c40ec41..29f7768 100644
--- a/arch/arm64/configs/defconfig
+++ b/arch/arm64/configs/defconfig
@@ -415,6 +415,7 @@ CONFIG_THERMAL_GOV_POWER_ALLOCATOR=y
 CONFIG_CPU_THERMAL=y
 CONFIG_THERMAL_EMULATION=y
 CONFIG_QORIQ_THERMAL=m
+CONFIG_IMX_SC_THERMAL=m
 CONFIG_ROCKCHIP_THERMAL=m
 CONFIG_RCAR_THERMAL=y
 CONFIG_RCAR_GEN3_THERMAL=y
-- 
2.7.4


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^ permalink raw reply	[flat|nested] 6+ messages in thread

* [PATCH V15 5/5] arm64: dts: imx: add i.MX8QXP thermal support
  2019-06-18  2:18 [PATCH V15 1/5] dt-bindings: fsl: scu: add thermal binding Anson.Huang
                   ` (2 preceding siblings ...)
  2019-06-18  2:18 ` [PATCH V15 4/5] defconfig: arm64: " Anson.Huang
@ 2019-06-18  2:18 ` " Anson.Huang
  2019-06-24  8:04 ` [PATCH V15 1/5] dt-bindings: fsl: scu: add thermal binding Anson Huang
  4 siblings, 0 replies; 6+ messages in thread
From: Anson.Huang @ 2019-06-18  2:18 UTC (permalink / raw)
  To: robh+dt, mark.rutland, corbet, shawnguo, s.hauer, kernel,
	festevam, catalin.marinas, will.deacon, rui.zhang, edubezval,
	daniel.lezcano, aisheng.dong, ulf.hansson, peng.fan,
	mchehab+samsung, linux, daniel.baluta, maxime.ripard,
	horms+renesas, olof, jagan, bjorn.andersson, leonard.crestez,
	dinguyen, enric.balletbo, devicetree, linux-kernel, linux-doc,
	linux-arm-kernel, linux-pm
  Cc: Linux-imx

From: Anson Huang <Anson.Huang@nxp.com>

Add i.MX8QXP CPU thermal zone support.

Signed-off-by: Anson Huang <Anson.Huang@nxp.com>
---
No change.
---
 arch/arm64/boot/dts/freescale/imx8qxp.dtsi | 37 ++++++++++++++++++++++++++++++
 1 file changed, 37 insertions(+)

diff --git a/arch/arm64/boot/dts/freescale/imx8qxp.dtsi b/arch/arm64/boot/dts/freescale/imx8qxp.dtsi
index b2cb818..12044be 100644
--- a/arch/arm64/boot/dts/freescale/imx8qxp.dtsi
+++ b/arch/arm64/boot/dts/freescale/imx8qxp.dtsi
@@ -10,6 +10,7 @@
 #include <dt-bindings/gpio/gpio.h>
 #include <dt-bindings/interrupt-controller/arm-gic.h>
 #include <dt-bindings/pinctrl/pads-imx8qxp.h>
+#include <dt-bindings/thermal/thermal.h>
 
 / {
 	interrupt-parent = <&gic>;
@@ -168,6 +169,11 @@
 			compatible = "fsl,imx8qxp-sc-wdt", "fsl,imx-sc-wdt";
 			timeout-sec = <60>;
 		};
+
+		tsens: thermal-sensor {
+			compatible = "fsl,imx8qxp-sc-thermal", "fsl,imx-sc-thermal";
+			#thermal-sensor-cells = <1>;
+		};
 	};
 
 	timer {
@@ -536,4 +542,35 @@
 			power-domains = <&pd IMX_SC_R_GPIO_7>;
 		};
 	};
+
+	thermal_zones: thermal-zones {
+		cpu-thermal0 {
+			polling-delay-passive = <250>;
+			polling-delay = <2000>;
+			thermal-sensors = <&tsens IMX_SC_R_SYSTEM>;
+			trips {
+				cpu_alert0: trip0 {
+					temperature = <107000>;
+					hysteresis = <2000>;
+					type = "passive";
+				};
+				cpu_crit0: trip1 {
+					temperature = <127000>;
+					hysteresis = <2000>;
+					type = "critical";
+				};
+			};
+			cooling-maps {
+				map0 {
+					trip = <&cpu_alert0>;
+					cooling-device =
+						<&A35_0 THERMAL_NO_LIMIT THERMAL_NO_LIMIT>,
+						<&A35_1 THERMAL_NO_LIMIT THERMAL_NO_LIMIT>,
+						<&A35_2 THERMAL_NO_LIMIT THERMAL_NO_LIMIT>,
+						<&A35_3 THERMAL_NO_LIMIT THERMAL_NO_LIMIT>;
+
+				};
+			};
+		};
+	};
 };
-- 
2.7.4


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^ permalink raw reply	[flat|nested] 6+ messages in thread

* RE: [PATCH V15 1/5] dt-bindings: fsl: scu: add thermal binding
  2019-06-18  2:18 [PATCH V15 1/5] dt-bindings: fsl: scu: add thermal binding Anson.Huang
                   ` (3 preceding siblings ...)
  2019-06-18  2:18 ` [PATCH V15 5/5] arm64: dts: imx: add i.MX8QXP " Anson.Huang
@ 2019-06-24  8:04 ` Anson Huang
  4 siblings, 0 replies; 6+ messages in thread
From: Anson Huang @ 2019-06-24  8:04 UTC (permalink / raw)
  To: Anson Huang, robh+dt, mark.rutland, corbet, shawnguo, s.hauer,
	kernel, festevam, catalin.marinas, will.deacon, rui.zhang,
	edubezval, daniel.lezcano, Aisheng Dong, ulf.hansson, Peng Fan,
	mchehab+samsung, linux, Daniel Baluta, maxime.ripard,
	horms+renesas, olof, jagan, bjorn.andersson, Leonard Crestez,
	dinguyen, enric.balletbo, devicetree, linux-kernel, linux-doc,
	linux-arm-kernel, linux-pm
  Cc: dl-linux-imx

Hi, Daniel/Rui/Eduardo
	Could you please take a look at this patch series? 

Anson

> From: Anson Huang <Anson.Huang@nxp.com>
> 
> NXP i.MX8QXP is an ARMv8 SoC with a Cortex-M4 core inside as system
> controller, the system controller is in charge of system power, clock and
> thermal sensors etc. management, Linux kernel has to communicate with
> system controller via MU (message unit) IPC to get temperature from thermal
> sensors, this patch adds binding doc for i.MX system controller thermal
> driver.
> 
> Signed-off-by: Anson Huang <Anson.Huang@nxp.com>
> Reviewed-by: Rob Herring <robh@kernel.org>
> Reviewed-by: Dong Aisheng <aisheng.dong@nxp.com>
> ---
> No change.
> ---
>  .../devicetree/bindings/arm/freescale/fsl,scu.txt        | 16 ++++++++++++++++
>  1 file changed, 16 insertions(+)
> 
> diff --git a/Documentation/devicetree/bindings/arm/freescale/fsl,scu.txt
> b/Documentation/devicetree/bindings/arm/freescale/fsl,scu.txt
> index a575e42..fc3844e 100644
> --- a/Documentation/devicetree/bindings/arm/freescale/fsl,scu.txt
> +++ b/Documentation/devicetree/bindings/arm/freescale/fsl,scu.txt
> @@ -155,6 +155,17 @@ Required properties:
>  Optional properties:
>  - timeout-sec: contains the watchdog timeout in seconds.
> 
> +Thermal bindings based on SCU Message Protocol
> +------------------------------------------------------------
> +
> +Required properties:
> +- compatible:			Should be :
> +				  "fsl,imx8qxp-sc-thermal"
> +				followed by "fsl,imx-sc-thermal";
> +
> +- #thermal-sensor-cells:	See
> Documentation/devicetree/bindings/thermal/thermal.txt
> +				for a description.
> +
>  Example (imx8qxp):
>  -------------
>  aliases {
> @@ -222,6 +233,11 @@ firmware {
>  			compatible = "fsl,imx8qxp-sc-wdt", "fsl,imx-sc-wdt";
>  			timeout-sec = <60>;
>  		};
> +
> +		tsens: thermal-sensor {
> +			compatible = "fsl,imx8qxp-sc-thermal", "fsl,imx-sc-
> thermal";
> +			#thermal-sensor-cells = <1>;
> +		};
>  	};
>  };
> 
> --
> 2.7.4

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^ permalink raw reply	[flat|nested] 6+ messages in thread

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Thread overview: 6+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2019-06-18  2:18 [PATCH V15 1/5] dt-bindings: fsl: scu: add thermal binding Anson.Huang
2019-06-18  2:18 ` [PATCH V15 2/5] thermal: of-thermal: add API for getting sensor ID from DT Anson.Huang
2019-06-18  2:18 ` [PATCH V15 3/5] thermal: imx_sc: add i.MX system controller thermal support Anson.Huang
2019-06-18  2:18 ` [PATCH V15 4/5] defconfig: arm64: " Anson.Huang
2019-06-18  2:18 ` [PATCH V15 5/5] arm64: dts: imx: add i.MX8QXP " Anson.Huang
2019-06-24  8:04 ` [PATCH V15 1/5] dt-bindings: fsl: scu: add thermal binding Anson Huang

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