thermal: imx: add i.MX7 thermal sensor support (f085f672) · Commits · 戴 / test

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

+7 −2

Original line number	Original line	Diff line number	Diff line
	* Temperature Monitor (TEMPMON) on Freescale i.MX SoCs		* Temperature Monitor (TEMPMON) on Freescale i.MX SoCs

	Required properties:		Required properties:
	- compatible : "fsl,imx6q-tempmon" for i.MX6Q, "fsl,imx6sx-tempmon" for i.MX6SX.		- compatible : must be one of following:
	i.MX6SX has two more IRQs than i.MX6Q, one is IRQ_LOW and the other is IRQ_PANIC,		- "fsl,imx6q-tempmon" for i.MX6Q,
			- "fsl,imx6sx-tempmon" for i.MX6SX,
			- "fsl,imx7d-tempmon" for i.MX7S/D.
			- interrupts : the interrupt output of the controller:
			i.MX6Q has one IRQ which will be triggered when temperature is higher than high threshold,
			i.MX6SX and i.MX7S/D have two more IRQs than i.MX6Q, one is IRQ_LOW and the other is IRQ_PANIC,
	when temperature is below than low threshold, IRQ_LOW will be triggered, when temperature		when temperature is below than low threshold, IRQ_LOW will be triggered, when temperature
	is higher than panic threshold, system will auto reboot by SRC module.		is higher than panic threshold, system will auto reboot by SRC module.
	- fsl,tempmon : phandle pointer to system controller that contains TEMPMON		- fsl,tempmon : phandle pointer to system controller that contains TEMPMON

drivers/thermal/imx_thermal.c

+232 −63

Original line number	Original line	Diff line number	Diff line
	@@ -31,35 +31,57 @@
	#define REG_CLR 0x8		#define REG_CLR 0x8
	#define REG_TOG 0xc		#define REG_TOG 0xc

	#define MISC0 0x0150		/* i.MX6 specific */
	#define MISC0_REFTOP_SELBIASOFF (1 << 3)		#define IMX6_MISC0 0x0150
	#define MISC1 0x0160		#define IMX6_MISC0_REFTOP_SELBIASOFF (1 << 3)
	#define MISC1_IRQ_TEMPHIGH (1 << 29)		#define IMX6_MISC1 0x0160
			#define IMX6_MISC1_IRQ_TEMPHIGH (1 << 29)
	/* Below LOW and PANIC bits are only for TEMPMON_IMX6SX */		/* Below LOW and PANIC bits are only for TEMPMON_IMX6SX */
	#define MISC1_IRQ_TEMPLOW (1 << 28)		#define IMX6_MISC1_IRQ_TEMPLOW (1 << 28)
	#define MISC1_IRQ_TEMPPANIC (1 << 27)		#define IMX6_MISC1_IRQ_TEMPPANIC (1 << 27)

	#define TEMPSENSE0 0x0180		#define IMX6_TEMPSENSE0 0x0180
	#define TEMPSENSE0_ALARM_VALUE_SHIFT 20		#define IMX6_TEMPSENSE0_ALARM_VALUE_SHIFT 20
	#define TEMPSENSE0_ALARM_VALUE_MASK (0xfff << TEMPSENSE0_ALARM_VALUE_SHIFT)		#define IMX6_TEMPSENSE0_ALARM_VALUE_MASK (0xfff << 20)
	#define TEMPSENSE0_TEMP_CNT_SHIFT 8		#define IMX6_TEMPSENSE0_TEMP_CNT_SHIFT 8
	#define TEMPSENSE0_TEMP_CNT_MASK (0xfff << TEMPSENSE0_TEMP_CNT_SHIFT)		#define IMX6_TEMPSENSE0_TEMP_CNT_MASK (0xfff << 8)
	#define TEMPSENSE0_FINISHED (1 << 2)		#define IMX6_TEMPSENSE0_FINISHED (1 << 2)
	#define TEMPSENSE0_MEASURE_TEMP (1 << 1)		#define IMX6_TEMPSENSE0_MEASURE_TEMP (1 << 1)
	#define TEMPSENSE0_POWER_DOWN (1 << 0)		#define IMX6_TEMPSENSE0_POWER_DOWN (1 << 0)

	#define TEMPSENSE1 0x0190		#define IMX6_TEMPSENSE1 0x0190
	#define TEMPSENSE1_MEASURE_FREQ 0xffff		#define IMX6_TEMPSENSE1_MEASURE_FREQ 0xffff
	/* Below TEMPSENSE2 is only for TEMPMON_IMX6SX */		#define IMX6_TEMPSENSE1_MEASURE_FREQ_SHIFT 0
	#define TEMPSENSE2 0x0290
	#define TEMPSENSE2_LOW_VALUE_SHIFT 0
	#define TEMPSENSE2_LOW_VALUE_MASK 0xfff
	#define TEMPSENSE2_PANIC_VALUE_SHIFT 16
	#define TEMPSENSE2_PANIC_VALUE_MASK 0xfff0000

	#define OCOTP_MEM0 0x0480		#define OCOTP_MEM0 0x0480
	#define OCOTP_ANA1 0x04e0		#define OCOTP_ANA1 0x04e0

			/* Below TEMPSENSE2 is only for TEMPMON_IMX6SX */
			#define IMX6_TEMPSENSE2 0x0290
			#define IMX6_TEMPSENSE2_LOW_VALUE_SHIFT 0
			#define IMX6_TEMPSENSE2_LOW_VALUE_MASK 0xfff
			#define IMX6_TEMPSENSE2_PANIC_VALUE_SHIFT 16
			#define IMX6_TEMPSENSE2_PANIC_VALUE_MASK 0xfff0000

			/* i.MX7 specific */
			#define IMX7_ANADIG_DIGPROG 0x800
			#define IMX7_TEMPSENSE0 0x300
			#define IMX7_TEMPSENSE0_PANIC_ALARM_SHIFT 18
			#define IMX7_TEMPSENSE0_PANIC_ALARM_MASK (0x1ff << 18)
			#define IMX7_TEMPSENSE0_HIGH_ALARM_SHIFT 9
			#define IMX7_TEMPSENSE0_HIGH_ALARM_MASK (0x1ff << 9)
			#define IMX7_TEMPSENSE0_LOW_ALARM_SHIFT 0
			#define IMX7_TEMPSENSE0_LOW_ALARM_MASK 0x1ff

			#define IMX7_TEMPSENSE1 0x310
			#define IMX7_TEMPSENSE1_MEASURE_FREQ_SHIFT 16
			#define IMX7_TEMPSENSE1_MEASURE_FREQ_MASK (0xffff << 16)
			#define IMX7_TEMPSENSE1_FINISHED (1 << 11)
			#define IMX7_TEMPSENSE1_MEASURE_TEMP (1 << 10)
			#define IMX7_TEMPSENSE1_POWER_DOWN (1 << 9)
			#define IMX7_TEMPSENSE1_TEMP_VALUE_SHIFT 0
			#define IMX7_TEMPSENSE1_TEMP_VALUE_MASK 0x1ff

	/* The driver supports 1 passive trip point and 1 critical trip point */		/* The driver supports 1 passive trip point and 1 critical trip point */
	enum imx_thermal_trip {		enum imx_thermal_trip {
	IMX_TRIP_PASSIVE,		IMX_TRIP_PASSIVE,
	@@ -72,17 +94,114 @@ enum imx_thermal_trip {

	#define TEMPMON_IMX6Q 1		#define TEMPMON_IMX6Q 1
	#define TEMPMON_IMX6SX 2		#define TEMPMON_IMX6SX 2
			#define TEMPMON_IMX7D 3

	struct thermal_soc_data {		struct thermal_soc_data {
	u32 version;		u32 version;

			u32 sensor_ctrl;
			u32 power_down_mask;
			u32 measure_temp_mask;

			u32 measure_freq_ctrl;
			u32 measure_freq_mask;
			u32 measure_freq_shift;

			u32 temp_data;
			u32 temp_value_mask;
			u32 temp_value_shift;
			u32 temp_valid_mask;

			u32 panic_alarm_ctrl;
			u32 panic_alarm_mask;
			u32 panic_alarm_shift;

			u32 high_alarm_ctrl;
			u32 high_alarm_mask;
			u32 high_alarm_shift;

			u32 low_alarm_ctrl;
			u32 low_alarm_mask;
			u32 low_alarm_shift;
	};		};

	static struct thermal_soc_data thermal_imx6q_data = {		static struct thermal_soc_data thermal_imx6q_data = {
	.version = TEMPMON_IMX6Q,		.version = TEMPMON_IMX6Q,

			.sensor_ctrl = IMX6_TEMPSENSE0,
			.power_down_mask = IMX6_TEMPSENSE0_POWER_DOWN,
			.measure_temp_mask = IMX6_TEMPSENSE0_MEASURE_TEMP,

			.measure_freq_ctrl = IMX6_TEMPSENSE1,
			.measure_freq_shift = IMX6_TEMPSENSE1_MEASURE_FREQ_SHIFT,
			.measure_freq_mask = IMX6_TEMPSENSE1_MEASURE_FREQ,

			.temp_data = IMX6_TEMPSENSE0,
			.temp_value_mask = IMX6_TEMPSENSE0_TEMP_CNT_MASK,
			.temp_value_shift = IMX6_TEMPSENSE0_TEMP_CNT_SHIFT,
			.temp_valid_mask = IMX6_TEMPSENSE0_FINISHED,

			.high_alarm_ctrl = IMX6_TEMPSENSE0,
			.high_alarm_mask = IMX6_TEMPSENSE0_ALARM_VALUE_MASK,
			.high_alarm_shift = IMX6_TEMPSENSE0_ALARM_VALUE_SHIFT,
	};		};

	static struct thermal_soc_data thermal_imx6sx_data = {		static struct thermal_soc_data thermal_imx6sx_data = {
	.version = TEMPMON_IMX6SX,		.version = TEMPMON_IMX6SX,

			.sensor_ctrl = IMX6_TEMPSENSE0,
			.power_down_mask = IMX6_TEMPSENSE0_POWER_DOWN,
			.measure_temp_mask = IMX6_TEMPSENSE0_MEASURE_TEMP,

			.measure_freq_ctrl = IMX6_TEMPSENSE1,
			.measure_freq_shift = IMX6_TEMPSENSE1_MEASURE_FREQ_SHIFT,
			.measure_freq_mask = IMX6_TEMPSENSE1_MEASURE_FREQ,

			.temp_data = IMX6_TEMPSENSE0,
			.temp_value_mask = IMX6_TEMPSENSE0_TEMP_CNT_MASK,
			.temp_value_shift = IMX6_TEMPSENSE0_TEMP_CNT_SHIFT,
			.temp_valid_mask = IMX6_TEMPSENSE0_FINISHED,

			.high_alarm_ctrl = IMX6_TEMPSENSE0,
			.high_alarm_mask = IMX6_TEMPSENSE0_ALARM_VALUE_MASK,
			.high_alarm_shift = IMX6_TEMPSENSE0_ALARM_VALUE_SHIFT,

			.panic_alarm_ctrl = IMX6_TEMPSENSE2,
			.panic_alarm_mask = IMX6_TEMPSENSE2_PANIC_VALUE_MASK,
			.panic_alarm_shift = IMX6_TEMPSENSE2_PANIC_VALUE_SHIFT,

			.low_alarm_ctrl = IMX6_TEMPSENSE2,
			.low_alarm_mask = IMX6_TEMPSENSE2_LOW_VALUE_MASK,
			.low_alarm_shift = IMX6_TEMPSENSE2_LOW_VALUE_SHIFT,
			};

			static struct thermal_soc_data thermal_imx7d_data = {
			.version = TEMPMON_IMX7D,

			.sensor_ctrl = IMX7_TEMPSENSE1,
			.power_down_mask = IMX7_TEMPSENSE1_POWER_DOWN,
			.measure_temp_mask = IMX7_TEMPSENSE1_MEASURE_TEMP,

			.measure_freq_ctrl = IMX7_TEMPSENSE1,
			.measure_freq_shift = IMX7_TEMPSENSE1_MEASURE_FREQ_SHIFT,
			.measure_freq_mask = IMX7_TEMPSENSE1_MEASURE_FREQ_MASK,

			.temp_data = IMX7_TEMPSENSE1,
			.temp_value_mask = IMX7_TEMPSENSE1_TEMP_VALUE_MASK,
			.temp_value_shift = IMX7_TEMPSENSE1_TEMP_VALUE_SHIFT,
			.temp_valid_mask = IMX7_TEMPSENSE1_FINISHED,

			.panic_alarm_ctrl = IMX7_TEMPSENSE1,
			.panic_alarm_mask = IMX7_TEMPSENSE0_PANIC_ALARM_MASK,
			.panic_alarm_shift = IMX7_TEMPSENSE0_PANIC_ALARM_SHIFT,

			.high_alarm_ctrl = IMX7_TEMPSENSE0,
			.high_alarm_mask = IMX7_TEMPSENSE0_HIGH_ALARM_MASK,
			.high_alarm_shift = IMX7_TEMPSENSE0_HIGH_ALARM_SHIFT,

			.low_alarm_ctrl = IMX7_TEMPSENSE0,
			.low_alarm_mask = IMX7_TEMPSENSE0_LOW_ALARM_MASK,
			.low_alarm_shift = IMX7_TEMPSENSE0_LOW_ALARM_SHIFT,
	};		};

	struct imx_thermal_data {		struct imx_thermal_data {
	@@ -107,31 +226,42 @@ struct imx_thermal_data {
	static void imx_set_panic_temp(struct imx_thermal_data *data,		static void imx_set_panic_temp(struct imx_thermal_data *data,
	int panic_temp)		int panic_temp)
	{		{
			const struct thermal_soc_data *soc_data = data->socdata;
	struct regmap *map = data->tempmon;		struct regmap *map = data->tempmon;
	int critical_value;		int critical_value;

	critical_value = (data->c2 - panic_temp) / data->c1;		critical_value = (data->c2 - panic_temp) / data->c1;
	regmap_write(map, TEMPSENSE2 + REG_CLR, TEMPSENSE2_PANIC_VALUE_MASK);
	regmap_write(map, TEMPSENSE2 + REG_SET, critical_value <<		regmap_write(map, soc_data->panic_alarm_ctrl + REG_CLR,
	TEMPSENSE2_PANIC_VALUE_SHIFT);		soc_data->panic_alarm_mask);
			regmap_write(map, soc_data->panic_alarm_ctrl + REG_SET,
			critical_value << soc_data->panic_alarm_shift);
	}		}

	static void imx_set_alarm_temp(struct imx_thermal_data *data,		static void imx_set_alarm_temp(struct imx_thermal_data *data,
	int alarm_temp)		int alarm_temp)
	{		{
	struct regmap *map = data->tempmon;		struct regmap *map = data->tempmon;
			const struct thermal_soc_data *soc_data = data->socdata;
	int alarm_value;		int alarm_value;

	data->alarm_temp = alarm_temp;		data->alarm_temp = alarm_temp;

			if (data->socdata->version == TEMPMON_IMX7D)
			alarm_value = alarm_temp / 1000 + data->c1 - 25;
			else
	alarm_value = (data->c2 - alarm_temp) / data->c1;		alarm_value = (data->c2 - alarm_temp) / data->c1;
	regmap_write(map, TEMPSENSE0 + REG_CLR, TEMPSENSE0_ALARM_VALUE_MASK);
	regmap_write(map, TEMPSENSE0 + REG_SET, alarm_value <<		regmap_write(map, soc_data->high_alarm_ctrl + REG_CLR,
	TEMPSENSE0_ALARM_VALUE_SHIFT);		soc_data->high_alarm_mask);
			regmap_write(map, soc_data->high_alarm_ctrl + REG_SET,
			alarm_value << soc_data->high_alarm_shift);
	}		}

	static int imx_get_temp(struct thermal_zone_device tz, int temp)		static int imx_get_temp(struct thermal_zone_device tz, int temp)
	{		{
	struct imx_thermal_data *data = tz->devdata;		struct imx_thermal_data *data = tz->devdata;
			const struct thermal_soc_data *soc_data = data->socdata;
	struct regmap *map = data->tempmon;		struct regmap *map = data->tempmon;
	unsigned int n_meas;		unsigned int n_meas;
	bool wait;		bool wait;
	@@ -139,16 +269,18 @@ static int imx_get_temp(struct thermal_zone_device tz, int temp)

	if (data->mode == THERMAL_DEVICE_ENABLED) {		if (data->mode == THERMAL_DEVICE_ENABLED) {
	/* Check if a measurement is currently in progress */		/* Check if a measurement is currently in progress */
	regmap_read(map, TEMPSENSE0, &val);		regmap_read(map, soc_data->temp_data, &val);
	wait = !(val & TEMPSENSE0_FINISHED);		wait = !(val & soc_data->temp_valid_mask);
	} else {		} else {
	/*		/*
	* Every time we measure the temperature, we will power on the		* Every time we measure the temperature, we will power on the
	* temperature sensor, enable measurements, take a reading,		* temperature sensor, enable measurements, take a reading,
	* disable measurements, power off the temperature sensor.		* disable measurements, power off the temperature sensor.
	*/		*/
	regmap_write(map, TEMPSENSE0 + REG_CLR, TEMPSENSE0_POWER_DOWN);		regmap_write(map, soc_data->sensor_ctrl + REG_CLR,
	regmap_write(map, TEMPSENSE0 + REG_SET, TEMPSENSE0_MEASURE_TEMP);		soc_data->power_down_mask);
			regmap_write(map, soc_data->sensor_ctrl + REG_SET,
			soc_data->measure_temp_mask);

	wait = true;		wait = true;
	}		}
	@@ -160,21 +292,27 @@ static int imx_get_temp(struct thermal_zone_device tz, int temp)
	if (wait)		if (wait)
	usleep_range(20, 50);		usleep_range(20, 50);

	regmap_read(map, TEMPSENSE0, &val);		regmap_read(map, soc_data->temp_data, &val);

	if (data->mode != THERMAL_DEVICE_ENABLED) {		if (data->mode != THERMAL_DEVICE_ENABLED) {
	regmap_write(map, TEMPSENSE0 + REG_CLR, TEMPSENSE0_MEASURE_TEMP);		regmap_write(map, soc_data->sensor_ctrl + REG_CLR,
	regmap_write(map, TEMPSENSE0 + REG_SET, TEMPSENSE0_POWER_DOWN);		soc_data->measure_temp_mask);
			regmap_write(map, soc_data->sensor_ctrl + REG_SET,
			soc_data->power_down_mask);
	}		}

	if ((val & TEMPSENSE0_FINISHED) == 0) {		if ((val & soc_data->temp_valid_mask) == 0) {
	dev_dbg(&tz->device, "temp measurement never finished\n");		dev_dbg(&tz->device, "temp measurement never finished\n");
	return -EAGAIN;		return -EAGAIN;
	}		}

	n_meas = (val & TEMPSENSE0_TEMP_CNT_MASK) >> TEMPSENSE0_TEMP_CNT_SHIFT;		n_meas = (val & soc_data->temp_value_mask)
			>> soc_data->temp_value_shift;

	/* See imx_init_calib() for formula derivation */		/* See imx_init_calib() for formula derivation */
			if (data->socdata->version == TEMPMON_IMX7D)
			temp = (n_meas - data->c1 + 25) 1000;
			else
	temp = data->c2 - n_meas data->c1;		temp = data->c2 - n_meas data->c1;

	/* Update alarm value to next higher trip point for TEMPMON_IMX6Q */		/* Update alarm value to next higher trip point for TEMPMON_IMX6Q */
	@@ -219,21 +357,26 @@ static int imx_set_mode(struct thermal_zone_device *tz,
	{		{
	struct imx_thermal_data *data = tz->devdata;		struct imx_thermal_data *data = tz->devdata;
	struct regmap *map = data->tempmon;		struct regmap *map = data->tempmon;
			const struct thermal_soc_data *soc_data = data->socdata;

	if (mode == THERMAL_DEVICE_ENABLED) {		if (mode == THERMAL_DEVICE_ENABLED) {
	tz->polling_delay = IMX_POLLING_DELAY;		tz->polling_delay = IMX_POLLING_DELAY;
	tz->passive_delay = IMX_PASSIVE_DELAY;		tz->passive_delay = IMX_PASSIVE_DELAY;

	regmap_write(map, TEMPSENSE0 + REG_CLR, TEMPSENSE0_POWER_DOWN);		regmap_write(map, soc_data->sensor_ctrl + REG_CLR,
	regmap_write(map, TEMPSENSE0 + REG_SET, TEMPSENSE0_MEASURE_TEMP);		soc_data->power_down_mask);
			regmap_write(map, soc_data->sensor_ctrl + REG_SET,
			soc_data->measure_temp_mask);

	if (!data->irq_enabled) {		if (!data->irq_enabled) {
	data->irq_enabled = true;		data->irq_enabled = true;
	enable_irq(data->irq);		enable_irq(data->irq);
	}		}
	} else {		} else {
	regmap_write(map, TEMPSENSE0 + REG_CLR, TEMPSENSE0_MEASURE_TEMP);		regmap_write(map, soc_data->sensor_ctrl + REG_CLR,
	regmap_write(map, TEMPSENSE0 + REG_SET, TEMPSENSE0_POWER_DOWN);		soc_data->measure_temp_mask);
			regmap_write(map, soc_data->sensor_ctrl + REG_SET,
			soc_data->power_down_mask);

	tz->polling_delay = 0;		tz->polling_delay = 0;
	tz->passive_delay = 0;		tz->passive_delay = 0;
	@@ -354,6 +497,15 @@ static int imx_init_calib(struct platform_device *pdev, u32 ocotp_ana1)
	return -EINVAL;		return -EINVAL;
	}		}

			/*
			* On i.MX7D, we only use the calibration data at 25C to get the temp,
			* Tmeas = ( Nmeas - n1) + 25; n1 is the fuse value for 25C.
			*/
			if (data->socdata->version == TEMPMON_IMX7D) {
			data->c1 = (ocotp_ana1 >> 9) & 0x1ff;
			return 0;
			}

	/*		/*
	* The sensor is calibrated at 25 °C (aka T1) and the value measured		* The sensor is calibrated at 25 °C (aka T1) and the value measured
	* (aka N1) at this temperature is provided in bits [31:20] in the		* (aka N1) at this temperature is provided in bits [31:20] in the
	@@ -492,6 +644,7 @@ static irqreturn_t imx_thermal_alarm_irq_thread(int irq, void *dev)
	static const struct of_device_id of_imx_thermal_match[] = {		static const struct of_device_id of_imx_thermal_match[] = {
	{ .compatible = "fsl,imx6q-tempmon", .data = &thermal_imx6q_data, },		{ .compatible = "fsl,imx6q-tempmon", .data = &thermal_imx6q_data, },
	{ .compatible = "fsl,imx6sx-tempmon", .data = &thermal_imx6sx_data, },		{ .compatible = "fsl,imx6sx-tempmon", .data = &thermal_imx6sx_data, },
			{ .compatible = "fsl,imx7d-tempmon", .data = &thermal_imx7d_data, },
	{ /* end */ }		{ /* end */ }
	};		};
	MODULE_DEVICE_TABLE(of, of_imx_thermal_match);		MODULE_DEVICE_TABLE(of, of_imx_thermal_match);
	@@ -523,14 +676,15 @@ static int imx_thermal_probe(struct platform_device *pdev)

	/* make sure the IRQ flag is clear before enabling irq on i.MX6SX */		/* make sure the IRQ flag is clear before enabling irq on i.MX6SX */
	if (data->socdata->version == TEMPMON_IMX6SX) {		if (data->socdata->version == TEMPMON_IMX6SX) {
	regmap_write(map, MISC1 + REG_CLR, MISC1_IRQ_TEMPHIGH \|		regmap_write(map, IMX6_MISC1 + REG_CLR,
	MISC1_IRQ_TEMPLOW \| MISC1_IRQ_TEMPPANIC);		IMX6_MISC1_IRQ_TEMPHIGH \| IMX6_MISC1_IRQ_TEMPLOW
			\| IMX6_MISC1_IRQ_TEMPPANIC);
	/*		/*
	* reset value of LOW ALARM is incorrect, set it to lowest		* reset value of LOW ALARM is incorrect, set it to lowest
	* value to avoid false trigger of low alarm.		* value to avoid false trigger of low alarm.
	*/		*/
	regmap_write(map, TEMPSENSE2 + REG_SET,		regmap_write(map, data->socdata->low_alarm_ctrl + REG_SET,
	TEMPSENSE2_LOW_VALUE_MASK);		data->socdata->low_alarm_mask);
	}		}

	data->irq = platform_get_irq(pdev, 0);		data->irq = platform_get_irq(pdev, 0);
	@@ -557,11 +711,17 @@ static int imx_thermal_probe(struct platform_device *pdev)
	}		}

	/* Make sure sensor is in known good state for measurements */		/* Make sure sensor is in known good state for measurements */
	regmap_write(map, TEMPSENSE0 + REG_CLR, TEMPSENSE0_POWER_DOWN);		regmap_write(map, data->socdata->sensor_ctrl + REG_CLR,
	regmap_write(map, TEMPSENSE0 + REG_CLR, TEMPSENSE0_MEASURE_TEMP);		data->socdata->power_down_mask);
	regmap_write(map, TEMPSENSE1 + REG_CLR, TEMPSENSE1_MEASURE_FREQ);		regmap_write(map, data->socdata->sensor_ctrl + REG_CLR,
	regmap_write(map, MISC0 + REG_SET, MISC0_REFTOP_SELBIASOFF);		data->socdata->measure_temp_mask);
	regmap_write(map, TEMPSENSE0 + REG_SET, TEMPSENSE0_POWER_DOWN);		regmap_write(map, data->socdata->measure_freq_ctrl + REG_CLR,
			data->socdata->measure_freq_mask);
			if (data->socdata->version != TEMPMON_IMX7D)
			regmap_write(map, IMX6_MISC0 + REG_SET,
			IMX6_MISC0_REFTOP_SELBIASOFF);
			regmap_write(map, data->socdata->sensor_ctrl + REG_SET,
			data->socdata->power_down_mask);

	data->policy = cpufreq_cpu_get(0);		data->policy = cpufreq_cpu_get(0);
	if (!data->policy) {		if (!data->policy) {
	@@ -626,16 +786,20 @@ static int imx_thermal_probe(struct platform_device *pdev)
	data->temp_passive / 1000);		data->temp_passive / 1000);

	/* Enable measurements at ~ 10 Hz */		/* Enable measurements at ~ 10 Hz */
	regmap_write(map, TEMPSENSE1 + REG_CLR, TEMPSENSE1_MEASURE_FREQ);		regmap_write(map, data->socdata->measure_freq_ctrl + REG_CLR,
			data->socdata->measure_freq_mask);
	measure_freq = DIV_ROUND_UP(32768, 10); /* 10 Hz */		measure_freq = DIV_ROUND_UP(32768, 10); /* 10 Hz */
	regmap_write(map, TEMPSENSE1 + REG_SET, measure_freq);		regmap_write(map, data->socdata->measure_freq_ctrl + REG_SET,
			measure_freq << data->socdata->measure_freq_shift);
	imx_set_alarm_temp(data, data->temp_passive);		imx_set_alarm_temp(data, data->temp_passive);

	if (data->socdata->version == TEMPMON_IMX6SX)		if (data->socdata->version == TEMPMON_IMX6SX)
	imx_set_panic_temp(data, data->temp_critical);		imx_set_panic_temp(data, data->temp_critical);

	regmap_write(map, TEMPSENSE0 + REG_CLR, TEMPSENSE0_POWER_DOWN);		regmap_write(map, data->socdata->sensor_ctrl + REG_CLR,
	regmap_write(map, TEMPSENSE0 + REG_SET, TEMPSENSE0_MEASURE_TEMP);		data->socdata->power_down_mask);
			regmap_write(map, data->socdata->sensor_ctrl + REG_SET,
			data->socdata->measure_temp_mask);

	data->irq_enabled = true;		data->irq_enabled = true;
	data->mode = THERMAL_DEVICE_ENABLED;		data->mode = THERMAL_DEVICE_ENABLED;
	@@ -661,7 +825,8 @@ static int imx_thermal_remove(struct platform_device *pdev)
	struct regmap *map = data->tempmon;		struct regmap *map = data->tempmon;

	/* Disable measurements */		/* Disable measurements */
	regmap_write(map, TEMPSENSE0 + REG_SET, TEMPSENSE0_POWER_DOWN);		regmap_write(map, data->socdata->sensor_ctrl + REG_SET,
			data->socdata->power_down_mask);
	if (!IS_ERR(data->thermal_clk))		if (!IS_ERR(data->thermal_clk))
	clk_disable_unprepare(data->thermal_clk);		clk_disable_unprepare(data->thermal_clk);

	@@ -684,8 +849,10 @@ static int imx_thermal_suspend(struct device *dev)
	* temperature will be read as the thermal sensor is powered		* temperature will be read as the thermal sensor is powered
	* down.		* down.
	*/		*/
	regmap_write(map, TEMPSENSE0 + REG_CLR, TEMPSENSE0_MEASURE_TEMP);		regmap_write(map, data->socdata->sensor_ctrl + REG_CLR,
	regmap_write(map, TEMPSENSE0 + REG_SET, TEMPSENSE0_POWER_DOWN);		data->socdata->measure_temp_mask);
			regmap_write(map, data->socdata->sensor_ctrl + REG_SET,
			data->socdata->power_down_mask);
	data->mode = THERMAL_DEVICE_DISABLED;		data->mode = THERMAL_DEVICE_DISABLED;
	clk_disable_unprepare(data->thermal_clk);		clk_disable_unprepare(data->thermal_clk);

	@@ -702,8 +869,10 @@ static int imx_thermal_resume(struct device *dev)
	if (ret)		if (ret)
	return ret;		return ret;
	/* Enabled thermal sensor after resume */		/* Enabled thermal sensor after resume */
	regmap_write(map, TEMPSENSE0 + REG_CLR, TEMPSENSE0_POWER_DOWN);		regmap_write(map, data->socdata->sensor_ctrl + REG_CLR,
	regmap_write(map, TEMPSENSE0 + REG_SET, TEMPSENSE0_MEASURE_TEMP);		data->socdata->power_down_mask);
			regmap_write(map, data->socdata->sensor_ctrl + REG_SET,
			data->socdata->measure_temp_mask);
	data->mode = THERMAL_DEVICE_ENABLED;		data->mode = THERMAL_DEVICE_ENABLED;

	return 0;		return 0;

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