[PATCH V3 2/2] thermal: imx: add i.MX7 thermal sensor support

Anson Huang anson.huang at nxp.com
Fri Feb 23 19:12:18 PST 2018



Anson Huang
Best Regards!


> -----Original Message-----
> From: Shawn Guo [mailto:shawnguo at kernel.org]
> Sent: Saturday, February 24, 2018 10:52 AM
> To: Anson Huang <anson.huang at nxp.com>
> Cc: rui.zhang at intel.com; edubezval at gmail.com; robh+dt at kernel.org;
> mark.rutland at arm.com; kernel at pengutronix.de; Fabio Estevam
> <fabio.estevam at nxp.com>; linux at armlinux.org.uk;
> linux-arm-kernel at lists.infradead.org; devicetree at vger.kernel.org; dl-linux-imx
> <linux-imx at nxp.com>; linux-kernel at vger.kernel.org; linux-pm at vger.kernel.org
> Subject: Re: [PATCH V3 2/2] thermal: imx: add i.MX7 thermal sensor support
> 
> On Mon, Feb 05, 2018 at 04:12:27PM +0800, Anson Huang wrote:
> > This patch adds i.MX7 thermal sensor support, most of the i.MX7
> > thermal sensor functions are same with
> > i.MX6 except the registers offset/layout, so we move those registers
> > offset/layout definitions to soc data structure.
> >
> > i.MX7 uses single calibration data @25C, the calibration data is
> > located at OCOTP offset 0x4F0, bit[17:9], the formula is as below:
> >
> > Tmeas = (Nmeas - n1) + 25; n1 is the fuse value for 25C.
> >
> > Signed-off-by: Anson Huang <Anson.Huang at nxp.com>
> > Signed-off-by: Bai Ping <ping.bai at nxp.com>
> > ---
> > changes since V2:
> > 	Add bindind doc changes in this patch according to review comments.
> >  .../devicetree/bindings/thermal/imx-thermal.txt    |   9 +-
> >  drivers/thermal/imx_thermal.c                      | 314
> ++++++++++++++++-----
> >  2 files changed, 254 insertions(+), 69 deletions(-)
> >
> > diff --git a/Documentation/devicetree/bindings/thermal/imx-thermal.txt
> > b/Documentation/devicetree/bindings/thermal/imx-thermal.txt
> > index 28be51a..79f97bc 100644
> > --- a/Documentation/devicetree/bindings/thermal/imx-thermal.txt
> > +++ b/Documentation/devicetree/bindings/thermal/imx-thermal.txt
> > @@ -1,8 +1,13 @@
> >  * Temperature Monitor (TEMPMON) on Freescale i.MX SoCs
> >
> >  Required properties:
> > -- compatible : "fsl,imx6q-tempmon" for i.MX6Q, "fsl,imx6sx-tempmon" for
> i.MX6SX.
> > -  i.MX6SX has two more IRQs than i.MX6Q, one is IRQ_LOW and the other
> > is IRQ_PANIC,
> > +- compatible : must be one of following:
> > +  - "fsl,imx6q-tempmon" for i.MX6Q,
> > +  - "fsl,imx6sx-tempmon" for i.MX6SX,
> > +  - "fsl,imx7-tempmon" for i.MX7S/D.
> 
> We generally use a SoC name rather than SoC family name for compatible.
> So imx7d or imx7s should be used in there, right?

I will use " fsl,imx7d-tempmon", just like other modules in dtsi.

> 
> > +- 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
> >    is higher than panic threshold, system will auto reboot by SRC module.
> >  - fsl,tempmon : phandle pointer to system controller that contains
> > TEMPMON diff --git a/drivers/thermal/imx_thermal.c
> > b/drivers/thermal/imx_thermal.c index e7d4ffc..c95fa82 100644
> > --- a/drivers/thermal/imx_thermal.c
> > +++ b/drivers/thermal/imx_thermal.c
> > @@ -31,34 +31,58 @@
> >  #define REG_CLR		0x8
> >  #define REG_TOG		0xc
> >
> > -#define MISC0				0x0150
> > -#define MISC0_REFTOP_SELBIASOFF		(1 << 3)
> > -#define MISC1				0x0160
> > -#define MISC1_IRQ_TEMPHIGH		(1 << 29)
> > +/* i.MX6 specific */
> > +#define IMX6_MISC0				0x0150
> > +#define IMX6_MISC0_REFTOP_SELBIASOFF		(1 << 3)
> > +#define IMX6_MISC1				0x0160
> > +#define IMX6_MISC1_IRQ_TEMPHIGH			(1 << 29)
> >  /* Below LOW and PANIC bits are only for TEMPMON_IMX6SX */
> > -#define MISC1_IRQ_TEMPLOW		(1 << 28)
> > -#define MISC1_IRQ_TEMPPANIC		(1 << 27)
> > -
> > -#define TEMPSENSE0			0x0180
> > -#define TEMPSENSE0_ALARM_VALUE_SHIFT	20
> > -#define TEMPSENSE0_ALARM_VALUE_MASK	(0xfff <<
> TEMPSENSE0_ALARM_VALUE_SHIFT)
> > -#define TEMPSENSE0_TEMP_CNT_SHIFT	8
> > -#define TEMPSENSE0_TEMP_CNT_MASK	(0xfff <<
> TEMPSENSE0_TEMP_CNT_SHIFT)
> > -#define TEMPSENSE0_FINISHED		(1 << 2)
> > -#define TEMPSENSE0_MEASURE_TEMP		(1 << 1)
> > -#define TEMPSENSE0_POWER_DOWN		(1 << 0)
> > -
> > -#define TEMPSENSE1			0x0190
> > -#define TEMPSENSE1_MEASURE_FREQ		0xffff
> > -/* Below TEMPSENSE2 is only for TEMPMON_IMX6SX */
> > -#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 IMX6_MISC1_IRQ_TEMPLOW			(1 << 28)
> > +#define IMX6_MISC1_IRQ_TEMPPANIC		(1 << 27)
> > +
> > +#define IMX6_TEMPSENSE0				0x0180
> > +#define IMX6_TEMPSENSE0_ALARM_VALUE_SHIFT	20
> > +#define IMX6_TEMPSENSE0_ALARM_VALUE_MASK	(0xfff << 20)
> > +#define IMX6_TEMPSENSE0_TEMP_CNT_SHIFT		8
> > +#define IMX6_TEMPSENSE0_TEMP_CNT_MASK		(0xfff << 8)
> > +#define IMX6_TEMPSENSE0_FINISHED		(1 << 2)
> > +#define IMX6_TEMPSENSE0_MEASURE_TEMP		(1 << 1)
> > +#define IMX6_TEMPSENSE0_POWER_DOWN		(1 << 0)
> > +
> > +#define IMX6_TEMPSENSE1				0x0190
> > +#define IMX6_TEMPSENSE1_MEASURE_FREQ		0xffff
> > +#define IMX6_TEMPSENSE1_MEASURE_FREQ_SHIFT	0
> >
> > -#define OCOTP_MEM0			0x0480
> > -#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
> > +
> > +#define IMX6_OCOTP_MEM0				0x0480
> > +#define IMX6_OCOTP_ANA1				0x04e0
> > +#define IMX7_OCOTP_TESTER3			0x0440
> > +#define IMX7_OCOTP_ANA1				0x04f0
> >
> >  /* The driver supports 1 passive trip point and 1 critical trip point
> > */  enum imx_thermal_trip { @@ -76,17 +100,114 @@ enum
> > imx_thermal_trip {
> >
> >  #define TEMPMON_IMX6Q			1
> >  #define TEMPMON_IMX6SX			2
> > +#define TEMPMON_IMX7			3
> >
> >  struct thermal_soc_data {
> >  	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 = {
> >  	.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 = {
> >  	.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_imx7_data = {
> > +	.version = TEMPMON_IMX7,
> > +
> > +	.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 {
> > @@ -112,30 +233,41 @@ static void imx_set_panic_temp(struct
> imx_thermal_data *data,
> >  			       int panic_temp)
> >  {
> >  	struct regmap *map = data->tempmon;
> > +	const struct thermal_soc_data *soc_data = data->socdata;
> 
> When possible, please keep the local variable area from the longest line to the
> shortest.
 
Will fix it in V4.

> 
> >  	int critical_value;
> >
> >  	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 <<
> > -			TEMPSENSE2_PANIC_VALUE_SHIFT);
> > +
> > +	regmap_write(map, soc_data->panic_alarm_ctrl + REG_CLR,
> > +		     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,
> >  			       int alarm_temp)
> >  {
> >  	struct regmap *map = data->tempmon;
> > +	const struct thermal_soc_data *soc_data = data->socdata;
> >  	int alarm_value;
> >
> >  	data->alarm_temp = alarm_temp;
> > -	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 <<
> > -			TEMPSENSE0_ALARM_VALUE_SHIFT);
> > +
> > +	if (data->socdata->version == TEMPMON_IMX7)
> > +		alarm_value = alarm_temp / 1000 + data->c1 - 25;
> > +	else
> > +		alarm_value = (data->c2 - alarm_temp) / data->c1;
> > +
> > +	regmap_write(map, soc_data->high_alarm_ctrl + REG_CLR,
> > +		     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)  {
> >  	struct imx_thermal_data *data = tz->devdata;
> > +	const struct thermal_soc_data *soc_data = data->socdata;
> >  	struct regmap *map = data->tempmon;
> >  	unsigned int n_meas;
> >  	bool wait;
> > @@ -143,16 +275,18 @@ static int imx_get_temp(struct
> > thermal_zone_device *tz, int *temp)
> >
> >  	if (data->mode == THERMAL_DEVICE_ENABLED) {
> >  		/* Check if a measurement is currently in progress */
> > -		regmap_read(map, TEMPSENSE0, &val);
> > -		wait = !(val & TEMPSENSE0_FINISHED);
> > +		regmap_read(map, soc_data->temp_data, &val);
> > +		wait = !(val & soc_data->temp_valid_mask);
> >  	} else {
> >  		/*
> >  		 * Every time we measure the temperature, we will power on the
> >  		 * temperature sensor, enable measurements, take a reading,
> >  		 * disable measurements, power off the temperature sensor.
> >  		 */
> > -		regmap_write(map, TEMPSENSE0 + REG_CLR,
> TEMPSENSE0_POWER_DOWN);
> > -		regmap_write(map, TEMPSENSE0 + REG_SET,
> TEMPSENSE0_MEASURE_TEMP);
> > +		regmap_write(map, soc_data->sensor_ctrl + REG_CLR,
> > +			    soc_data->power_down_mask);
> > +		regmap_write(map, soc_data->sensor_ctrl + REG_SET,
> > +			    soc_data->measure_temp_mask);
> >
> >  		wait = true;
> >  	}
> > @@ -164,22 +298,28 @@ static int imx_get_temp(struct
> thermal_zone_device *tz, int *temp)
> >  	if (wait)
> >  		usleep_range(20, 50);
> >
> > -	regmap_read(map, TEMPSENSE0, &val);
> > +	regmap_read(map, soc_data->temp_data, &val);
> >
> >  	if (data->mode != THERMAL_DEVICE_ENABLED) {
> > -		regmap_write(map, TEMPSENSE0 + REG_CLR,
> TEMPSENSE0_MEASURE_TEMP);
> > -		regmap_write(map, TEMPSENSE0 + REG_SET,
> TEMPSENSE0_POWER_DOWN);
> > +		regmap_write(map, soc_data->sensor_ctrl + REG_CLR,
> > +			     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");
> >  		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 */
> > -	*temp = data->c2 - n_meas * data->c1;
> > +	if (data->socdata->version == TEMPMON_IMX7)
> > +		*temp = (n_meas - data->c1 + 25) * 1000;
> > +	else
> > +		*temp = data->c2 - n_meas * data->c1;
> >
> >  	/* Update alarm value to next higher trip point for TEMPMON_IMX6Q */
> >  	if (data->socdata->version == TEMPMON_IMX6Q) { @@ -223,21 +363,26
> @@
> > static int imx_set_mode(struct thermal_zone_device *tz,  {
> >  	struct imx_thermal_data *data = tz->devdata;
> >  	struct regmap *map = data->tempmon;
> > +	const struct thermal_soc_data *soc_data = data->socdata;
> >
> >  	if (mode == THERMAL_DEVICE_ENABLED) {
> >  		tz->polling_delay = IMX_POLLING_DELAY;
> >  		tz->passive_delay = IMX_PASSIVE_DELAY;
> >
> > -		regmap_write(map, TEMPSENSE0 + REG_CLR,
> TEMPSENSE0_POWER_DOWN);
> > -		regmap_write(map, TEMPSENSE0 + REG_SET,
> TEMPSENSE0_MEASURE_TEMP);
> > +		regmap_write(map, soc_data->sensor_ctrl + REG_CLR,
> > +			     soc_data->power_down_mask);
> > +		regmap_write(map, soc_data->sensor_ctrl + REG_SET,
> > +			     soc_data->measure_temp_mask);
> >
> >  		if (!data->irq_enabled) {
> >  			data->irq_enabled = true;
> >  			enable_irq(data->irq);
> >  		}
> >  	} else {
> > -		regmap_write(map, TEMPSENSE0 + REG_CLR,
> TEMPSENSE0_MEASURE_TEMP);
> > -		regmap_write(map, TEMPSENSE0 + REG_SET,
> TEMPSENSE0_POWER_DOWN);
> > +		regmap_write(map, soc_data->sensor_ctrl + REG_CLR,
> > +			     soc_data->measure_temp_mask);
> > +		regmap_write(map, soc_data->sensor_ctrl + REG_SET,
> > +			     soc_data->power_down_mask);
> >
> >  		tz->polling_delay = 0;
> >  		tz->passive_delay = 0;
> > @@ -359,6 +504,15 @@ static int imx_init_calib(struct platform_device
> *pdev, u32 val)
> >  	}
> >
> >  	/*
> > +	 * On i.MX7, 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_IMX7) {
> > +		data->c1 = (val >> 9) & 0x1ff;
> > +		return 0;
> > +	}
> > +
> > +	/*
> >  	 * Sensor data layout:
> >  	 *   [31:20] - sensor value @ 25C
> >  	 * Use universal formula now and only need sensor value @ 25C
> 
> This chunk of code conflicts with mainline.  Please rebase the patch to
> v4.16-rc.
> 
> Shawn
 
Will do it in V4. Thanks.

Anson.

> 
> > @@ -426,6 +580,7 @@ static void imx_init_temp_grade(struct
> > platform_device *pdev, u32 val)
> >
> >  static int imx_init_from_tempmon_data(struct platform_device *pdev)
> > {
> > +	const struct imx_thermal_data *data = platform_get_drvdata(pdev);
> >  	struct regmap *map;
> >  	int ret;
> >  	u32 val;
> > @@ -438,7 +593,11 @@ static int imx_init_from_tempmon_data(struct
> platform_device *pdev)
> >  		return ret;
> >  	}
> >
> > -	ret = regmap_read(map, OCOTP_ANA1, &val);
> > +	if (data->socdata->version == TEMPMON_IMX7)
> > +		ret = regmap_read(map, IMX7_OCOTP_ANA1, &val);
> > +	else
> > +		ret = regmap_read(map, IMX6_OCOTP_ANA1, &val);
> > +
> >  	if (ret) {
> >  		dev_err(&pdev->dev, "failed to read sensor data: %d\n", ret);
> >  		return ret;
> > @@ -447,7 +606,11 @@ static int imx_init_from_tempmon_data(struct
> platform_device *pdev)
> >  	if (ret)
> >  		return ret;
> >
> > -	ret = regmap_read(map, OCOTP_MEM0, &val);
> > +	/* use OTP for thermal grade */
> > +	if (data->socdata->version == TEMPMON_IMX7)
> > +		ret = regmap_read(map, IMX7_OCOTP_TESTER3, &val);
> > +	else
> > +		ret = regmap_read(map, IMX6_OCOTP_MEM0, &val);
> >  	if (ret) {
> >  		dev_err(&pdev->dev, "failed to read sensor data: %d\n", ret);
> >  		return ret;
> > @@ -500,6 +663,7 @@ static irqreturn_t
> > imx_thermal_alarm_irq_thread(int irq, void *dev)  static const struct
> of_device_id of_imx_thermal_match[] = {
> >  	{ .compatible = "fsl,imx6q-tempmon", .data = &thermal_imx6q_data, },
> >  	{ .compatible = "fsl,imx6sx-tempmon", .data = &thermal_imx6sx_data,
> > },
> > +	{ .compatible = "fsl,imx7-tempmon", .data = &thermal_imx7_data, },
> >  	{ /* end */ }
> >  };
> >  MODULE_DEVICE_TABLE(of, of_imx_thermal_match); @@ -531,14 +695,15
> @@
> > static int imx_thermal_probe(struct platform_device *pdev)
> >
> >  	/* make sure the IRQ flag is clear before enabling irq on i.MX6SX */
> >  	if (data->socdata->version == TEMPMON_IMX6SX) {
> > -		regmap_write(map, MISC1 + REG_CLR, MISC1_IRQ_TEMPHIGH |
> > -			MISC1_IRQ_TEMPLOW | MISC1_IRQ_TEMPPANIC);
> > +		regmap_write(map, IMX6_MISC1 + REG_CLR,
> > +			IMX6_MISC1_IRQ_TEMPHIGH | IMX6_MISC1_IRQ_TEMPLOW
> > +			| IMX6_MISC1_IRQ_TEMPPANIC);
> >  		/*
> >  		 * reset value of LOW ALARM is incorrect, set it to lowest
> >  		 * value to avoid false trigger of low alarm.
> >  		 */
> > -		regmap_write(map, TEMPSENSE2 + REG_SET,
> > -			TEMPSENSE2_LOW_VALUE_MASK);
> > +		regmap_write(map, data->socdata->low_alarm_ctrl + REG_SET,
> > +			     data->socdata->low_alarm_mask);
> >  	}
> >
> >  	data->irq = platform_get_irq(pdev, 0); @@ -565,11 +730,17 @@ static
> > int imx_thermal_probe(struct platform_device *pdev)
> >  	}
> >
> >  	/* Make sure sensor is in known good state for measurements */
> > -	regmap_write(map, TEMPSENSE0 + REG_CLR,
> TEMPSENSE0_POWER_DOWN);
> > -	regmap_write(map, TEMPSENSE0 + REG_CLR,
> TEMPSENSE0_MEASURE_TEMP);
> > -	regmap_write(map, TEMPSENSE1 + REG_CLR,
> TEMPSENSE1_MEASURE_FREQ);
> > -	regmap_write(map, MISC0 + REG_SET, MISC0_REFTOP_SELBIASOFF);
> > -	regmap_write(map, TEMPSENSE0 + REG_SET,
> TEMPSENSE0_POWER_DOWN);
> > +	regmap_write(map, data->socdata->sensor_ctrl + REG_CLR,
> > +		     data->socdata->power_down_mask);
> > +	regmap_write(map, data->socdata->sensor_ctrl + REG_CLR,
> > +		     data->socdata->measure_temp_mask);
> > +	regmap_write(map, data->socdata->measure_freq_ctrl + REG_CLR,
> > +		     data->socdata->measure_freq_mask);
> > +	if (data->socdata->version != TEMPMON_IMX7)
> > +		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);
> >  	if (!data->policy) {
> > @@ -634,16 +805,20 @@ static int imx_thermal_probe(struct
> platform_device *pdev)
> >  		 data->temp_passive / 1000);
> >
> >  	/* 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 */
> > -	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);
> >
> >  	if (data->socdata->version == TEMPMON_IMX6SX)
> >  		imx_set_panic_temp(data, data->temp_critical);
> >
> > -	regmap_write(map, TEMPSENSE0 + REG_CLR,
> TEMPSENSE0_POWER_DOWN);
> > -	regmap_write(map, TEMPSENSE0 + REG_SET,
> TEMPSENSE0_MEASURE_TEMP);
> > +	regmap_write(map, data->socdata->sensor_ctrl + REG_CLR,
> > +		     data->socdata->power_down_mask);
> > +	regmap_write(map, data->socdata->sensor_ctrl + REG_SET,
> > +		     data->socdata->measure_temp_mask);
> >
> >  	ret = devm_request_threaded_irq(&pdev->dev, data->irq,
> >  			imx_thermal_alarm_irq, imx_thermal_alarm_irq_thread, @@
> -669,7
> > +844,8 @@ static int imx_thermal_remove(struct platform_device *pdev)
> >  	struct regmap *map = data->tempmon;
> >
> >  	/* 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))
> >  		clk_disable_unprepare(data->thermal_clk);
> >
> > @@ -692,8 +868,10 @@ static int imx_thermal_suspend(struct device *dev)
> >  	 * temperature will be read as the thermal sensor is powered
> >  	 * down.
> >  	 */
> > -	regmap_write(map, TEMPSENSE0 + REG_CLR,
> TEMPSENSE0_MEASURE_TEMP);
> > -	regmap_write(map, TEMPSENSE0 + REG_SET,
> TEMPSENSE0_POWER_DOWN);
> > +	regmap_write(map, data->socdata->sensor_ctrl + REG_CLR,
> > +		     data->socdata->measure_temp_mask);
> > +	regmap_write(map, data->socdata->sensor_ctrl + REG_SET,
> > +		     data->socdata->power_down_mask);
> >  	data->mode = THERMAL_DEVICE_DISABLED;
> >  	clk_disable_unprepare(data->thermal_clk);
> >
> > @@ -710,8 +888,10 @@ static int imx_thermal_resume(struct device *dev)
> >  	if (ret)
> >  		return ret;
> >  	/* Enabled thermal sensor after resume */
> > -	regmap_write(map, TEMPSENSE0 + REG_CLR,
> TEMPSENSE0_POWER_DOWN);
> > -	regmap_write(map, TEMPSENSE0 + REG_SET,
> TEMPSENSE0_MEASURE_TEMP);
> > +	regmap_write(map, data->socdata->sensor_ctrl + REG_CLR,
> > +		     data->socdata->power_down_mask);
> > +	regmap_write(map, data->socdata->sensor_ctrl + REG_SET,
> > +		     data->socdata->measure_temp_mask);
> >  	data->mode = THERMAL_DEVICE_ENABLED;
> >
> >  	return 0;
> > --
> > 2.7.4
> >
> >
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