drivers: sensor: temperature: Add i.MX RT die temperature sensor

drivers/sensor/nxp/CMakeLists.txt

@@ -7,6 +7,7 @@ add_subdirectory_ifdef(CONFIG_FXLS8974 fxls8974)
 add_subdirectory_ifdef(CONFIG_FXOS8700 fxos8700)
 add_subdirectory_ifdef(CONFIG_MCUX_LPCMP mcux_lpcmp)
 add_subdirectory_ifdef(CONFIG_NXP_TEMPMON nxp_tempmon)
+add_subdirectory_ifdef(CONFIG_NXP_TMPSNS nxp_tmpsns)
 add_subdirectory_ifdef(CONFIG_P3T1755 p3t1755)
 add_subdirectory_ifdef(CONFIG_QDEC_MCUX qdec_mcux)
 add_subdirectory_ifdef(CONFIG_QDEC_NXP_S32 qdec_nxp_s32)

drivers/sensor/nxp/Kconfig

@@ -9,6 +9,7 @@ source "drivers/sensor/nxp/mcux_acmp/Kconfig"
 source "drivers/sensor/nxp/mcux_lpcmp/Kconfig"
 source "drivers/sensor/nxp/nxp_kinetis_temp/Kconfig"
 source "drivers/sensor/nxp/nxp_tempmon/Kconfig"
+source "drivers/sensor/nxp/nxp_tmpsns/Kconfig"
 source "drivers/sensor/nxp/p3t1755/Kconfig"
 source "drivers/sensor/nxp/qdec_mcux/Kconfig"
 source "drivers/sensor/nxp/qdec_nxp_s32/Kconfig"

drivers/sensor/nxp/nxp_tmpsns/CMakeLists.txt

@@ -0,0 +1,3 @@
+zephyr_library()
+
+zephyr_library_sources(nxp_tmpsns.c)

drivers/sensor/nxp/nxp_tmpsns/Kconfig

@@ -0,0 +1,13 @@
+# NXP i.MX RT temperature sensor configuration options
+
+# Copyright (c) 2025 Polytech A/S
+# SPDX-License-Identifier: Apache-2.0
+
+config NXP_TMPSNS
+	bool "NXP TMPSNS sensor"
+	depends on SENSOR
+	depends on DT_HAS_NXP_TMPSNS_ENABLED
+	depends on SOC_SERIES_IMXRT11XX || SOC_SERIES_IMXRT118X
+	default y
+	help
+		Enable temperature measurement for NXP TMPSNS sensor

drivers/sensor/nxp/nxp_tmpsns/nxp_tmpsns.c

@@ -0,0 +1,68 @@
+/*
+ * Copyright (c) 2025 Polytech A/S
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+#define DT_DRV_COMPAT nxp_tmpsns
+
+#include <fsl_tempsensor.h>
+#include <zephyr/drivers/sensor.h>
+
+struct nxp_tmpsns_data {
+	float die_temp;
+};
+
+static int nxp_tmpsns_channel_get(const struct device *dev, enum sensor_channel chan,
+				  struct sensor_value *val)
+{
+	const struct nxp_tmpsns_data *data = dev->data;
+
+	switch (chan) {
+	case SENSOR_CHAN_ALL:
+	case SENSOR_CHAN_DIE_TEMP:
+		return sensor_value_from_float(val, data->die_temp);
+	default:
+		return -ENOTSUP;
+	}
+}
+
+static int nxp_tmpsns_channel_fetch(const struct device *dev, enum sensor_channel chan)
+{
+	struct nxp_tmpsns_data *data = dev->data;
+
+	switch (chan) {
+	case SENSOR_CHAN_ALL:
+	case SENSOR_CHAN_DIE_TEMP:
+		data->die_temp = TMPSNS_GetCurrentTemperature(TMPSNS);
+		return 0;
+	default:
+		return -ENOTSUP;
+	}
+}
+
+static const struct sensor_driver_api tmpsns_driver_api = {
+	.channel_get = nxp_tmpsns_channel_get,
+	.sample_fetch = nxp_tmpsns_channel_fetch,
+};
+
+static int nxp_tmpsns_init(const struct device *dev)
+{
+	tmpsns_config_t config;
+
+	TMPSNS_GetDefaultConfig(&config);
+	config.measureMode = kTEMPSENSOR_ContinuousMode;
+	config.frequency = 0x03U;
+	TMPSNS_Init(TMPSNS, &config);
+	TMPSNS_StartMeasure(TMPSNS);
+
+	return 0;
+}
+
+#define NXP_TMPSNS_DEFINE(inst)                                                                    \
+	struct nxp_tmpsns_data nxp_tmpsns_data_##inst;                                             \
+	SENSOR_DEVICE_DT_INST_DEFINE(inst, nxp_tmpsns_init, NULL, &nxp_tmpsns_data_##inst, NULL,   \
+				     POST_KERNEL, CONFIG_SENSOR_INIT_PRIORITY,                     \
+				     &tmpsns_driver_api);
+
+DT_INST_FOREACH_STATUS_OKAY(NXP_TMPSNS_DEFINE)

dts/arm/nxp/nxp_rt118x.dtsi

@@ -44,6 +44,13 @@
 			};
 		};
 	};
+
+	soc {
+		temp: temp {
+			compatible = "nxp,tmpsns";
+			status = "disabled";
+		};
+	};
 };
 
 &peripheral {

dts/arm/nxp/nxp_rt11xx.dtsi

@@ -1307,6 +1307,11 @@
 				status = "disabled";
 			};
 		};
+
+		temp: temp {
+			compatible = "nxp,tmpsns";
+			status = "disabled";
+		};
 	};
 };