Commit graph

32 commits

Author SHA1 Message Date
Tim Harvey
85abf0415d thermal: imx_tmu: fix missing include
commit c05ed00afb dropped linux/delay.h from common header

add linux/delay.h to avoid compile warning here

Signed-off-by: Tim Harvey <tharvey@gateworks.com>
2020-11-01 15:53:08 +01:00
Anatolij Gustschin
4e7413a998 thermal: imx_scu_thermal: prevent boot hang with zero pdata
Should initialization of pdata values have failed for some reason,
we end up in endless loop when getting the CPU temperature value
and can not boot. Check alert value in pdata and only retry reading
temperature if alert value is not zero. Also shorten the temperature
info string.

Signed-off-by: Anatolij Gustschin <agust@denx.de>
2020-05-22 13:29:25 +02:00
Simon Glass
c05ed00afb common: Drop linux/delay.h from common header
Move this uncommon header out of the common header.

Signed-off-by: Simon Glass <sjg@chromium.org>
2020-05-18 21:19:23 -04:00
Simon Glass
f7ae49fc4f common: Drop log.h from common header
Move this header out of the common header.

Signed-off-by: Simon Glass <sjg@chromium.org>
2020-05-18 21:19:18 -04:00
Simon Glass
4d72caa5b9 common: Drop image.h from common header
Move this uncommon header out of the common header.

Signed-off-by: Simon Glass <sjg@chromium.org>
2020-05-18 17:33:33 -04:00
Peng Fan
634fe73eed thermal: imx_tmu: support i.MX8MP
Support i.MX8MP thermal which has two probes and supports
temperature range from -40 to 125. Still uses default 1p HW
calibration at 25C and loads calibration parameters from fuse.

Signed-off-by: Ye Li <ye.li@nxp.com>
Signed-off-by: Peng Fan <peng.fan@nxp.com>
2020-05-10 20:55:20 +02:00
Peng Fan
951bf19dae thermal: imx_tmu: Check the TEMP range for iMX8MM
On iMX8MM, the V flag in TRISTR register only reflect the state of SNSR
value, not the calibrated TEMP value. So checking this flag is not
reliable. Per IC suggestion, change to read the TEMP/AVG_TEMP directly
and check whether it in valid range 10-125C.

Signed-off-by: Ye Li <ye.li@nxp.com>
Signed-off-by: Peng Fan <peng.fan@nxp.com>
2020-05-10 20:55:20 +02:00
Peng Fan
b5447b98f2 thermal: imx_tmu: Fix for temperature out of range
When the temperature is out of sensor's range, the Valid bit won't be
set in TRITSR register. So the polling loop won't go out.

Change the codes to retry 10 times with 100ms interval for the Valid bit.
If the timeout, we give a warning for the invalid data.

Modifed from Ye's NXP patch

Signed-off-by: Peng Fan <peng.fan@nxp.com>
2020-05-10 20:55:20 +02:00
Peng Fan
84897408c6 thermal: imx_tmu: support TMU arch level initialization
i.MX8MM TMU needs to load some registers from fuse, this is arch
dependent operation and may vary on different platforms. So add
a interface for arch level initialization.

Signed-off-by: Peng Fan <peng.fan@nxp.com>
2020-05-10 20:55:20 +02:00
Peng Fan
fc8657b7fb thermal: imx_tmu: Add support for thermal sensor on iMX8MM
The analog sensors on iMX8MM are new, used for 14LPP process. So the
Temperature Sensor Monitoring Unit (TMU) has some change accordingly.
We use version 2 in TMU driver to represent the new TMU, so the one
driver can service for both i.MX8MQ/M.

Signed-off-by: Peng Fan <peng.fan@nxp.com>
2020-05-10 20:55:20 +02:00
Peng Fan
2cd7f47983 thermal: Add thermal driver for i.MX8M
The driver is ported form Linux Kernel and support driver model.
Users need to provide the tmu node and sensors nodes in DTB.

Signed-off-by: Ye Li <ye.li@nxp.com>
Signed-off-by: Peng Fan <peng.fan@nxp.com>
2020-05-10 20:55:20 +02:00
Ye Li
6039d669f4 thermal: imx_scu_thermal: Update driver for i.MX8QM thermal sensor
Add iMX8QM thermal compatible string and its driver data.

Signed-off-by: Ye Li <ye.li@nxp.com>
Signed-off-by: Peng Fan <peng.fan@nxp.com>
2020-05-10 20:55:20 +02:00
Faiz Abbas
2695584a5c thermal: ti-bandgap: Fix adc value datatype
The CORE_TEMP_SENSOR_MPU register gives a raw adc value which needs to
be indexed into a lookup table to get the actual temperature. Fix the
naming and datatype of the adc value variable.

Signed-off-by: Faiz Abbas <faiz_abbas@ti.com>
Signed-off-by: Lokesh Vutla <lokeshvutla@ti.com>
2020-01-20 10:10:28 +05:30
Peng Fan
5ef5b6d46f thermal: add i.MX8 thermal driver
Add i.MX8 thermal driver to support get temperature from SCU.

Signed-off-by: Peng Fan <peng.fan@nxp.com>
2019-07-19 15:17:05 +02:00
Tom Rini
83d290c56f SPDX: Convert all of our single license tags to Linux Kernel style
When U-Boot started using SPDX tags we were among the early adopters and
there weren't a lot of other examples to borrow from.  So we picked the
area of the file that usually had a full license text and replaced it
with an appropriate SPDX-License-Identifier: entry.  Since then, the
Linux Kernel has adopted SPDX tags and they place it as the very first
line in a file (except where shebangs are used, then it's second line)
and with slightly different comment styles than us.

In part due to community overlap, in part due to better tag visibility
and in part for other minor reasons, switch over to that style.

This commit changes all instances where we have a single declared
license in the tag as both the before and after are identical in tag
contents.  There's also a few places where I found we did not have a tag
and have introduced one.

Signed-off-by: Tom Rini <trini@konsulko.com>
2018-05-07 09:34:12 -04:00
Faiz Abbas
8502f9f6d7 thermal: ti-bandgap: Add support for temperature sensor
The dra7xx series of SOCs contain a temperature sensor and an
associated analog-to-digital converter (ADC) which produces
an output which is proportional to the SOC temperature.
Add support for this temperature sensor.

Signed-off-by: Faiz Abbas <faiz_abbas@ti.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
2017-11-21 08:03:38 -05:00
Peng Fan
80512547ba thermal: imx: fix calculation
Fix calculation. do_div can not handle negative values.
Use div_s64_rem to handle the calculation.

Signed-off-by: Peng Fan <peng.fan@nxp.com>
Cc: Stefano Babic <sbabic@denx.de>
2017-05-18 11:23:31 +02:00
Peng Fan
4fac417168 imx: thermal: update imx6 thermal driver according new equation
>From IC guys:
"
After a thorough accuracy study of the Temp sense circuit,
we found that with our current equation, an average part can
read 7 degrees lower than a known forced temperature.
We also found out that the standard variance was around 2C;
which is the tightest distribution that we could create.
We need to change the temp sense equation to center the average
part around the target temperature.
"

New equation:
Tmeas = (Nmeas - n1) / slope + t1 + offset
n1= fused room count
t1= 25
offset=3.580661
slope= 0.4148468 – 0.0015423*n1

According the new equation, update the thermal driver.
c1 and c2 changed to u64 type and update comments.

Signed-off-by: Peng Fan <peng.fan@nxp.com>
Cc: Stefano Babic <sbabic@denx.de>
2017-05-18 11:23:31 +02:00
Peng Fan
5a25b71202 imx: thermal: Kconfig: add MX7
The thermal drivers support i.MX6 and i.MX7, add MX7 in Kconfig file.

Signed-off-by: Peng Fan <peng.fan@nxp.com>
Cc: Stefano Babic <sbabic@denx.de>
2017-01-02 17:08:25 +01:00
Jagan Teki
e28e14927f thermal: Kconfig: Add IMX_THERMAL entry
Added kconfig for IMX_THERMAL driver.

Cc: Simon Glass <sjg@chromium.org>
Cc: Fabio Estevam <fabio.estevam@nxp.com>
Cc: Stefano Babic <sbabic@denx.de>
Cc: Peng Fan <peng.fan@nxp.com>
Cc: Matteo Lisi <matteo.lisi@engicam.com>
Cc: Michael Trimarchi <michael@amarulasolutions.com>
Signed-off-by: Jagan Teki <jagan@amarulasolutions.com>
2016-10-26 16:53:16 +02:00
Robert P. J. Day
1cc0a9f496 Fix various typos, scattered over the code.
Spelling corrections for (among other things):

* environment
* override
* variable
* ftd (should be "fdt", for flattened device tree)
* embedded
* FTDI
* emulation
* controller
2016-05-05 21:39:26 -04:00
Peng Fan
fcbe8c5674 imx: mx7: fix the temperature checking for Rev1.1
To TO1.0, we can not rely on finish bit to read temperature. But to
TO1.1, the issue was fixed by IC, we can rely on finish bit for
temperature reading for TO1.1.

Signed-off-by: Peng Fan <peng.fan@nxp.com>
Cc: Stefano Babic <sbabic@denx.de>
Cc: Tim Harvey <tharvey@gateworks.com>
Cc: Fabio Estevam <fabio.estevam@freescale.com>
Cc: Adrian Alonso <aalonso@freescale.com>
2016-01-07 17:53:11 +01:00
Fabio Estevam
c8434ccace thermal: imx_thermal: Do not print on error
It is not very useful to have the message below on every boot
(especially when we are using early silicon):

U-Boot 2015.10-rc2-23945-g37cf215 (Sep 08 2015 - 14:12:14 -0300)

CPU:   Freescale i.MX6UL rev1.0 792 MHz (running at 396 MHz)
CPU:   Commercial temperature grade (0C to 95C)CPU:   Thermal invalid data, fuse: 0x0
 - invalid sensor device

, so turn the error message into debug level.

Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com>
2015-09-13 10:49:21 +02:00
Adrian Alonso
d1aa6f2d58 thermal: imx: add imx7d soc thermal support
Add imx7 SoC thermal driver support

Signed-off-by: Adrian Alonso <aalonso@freescale.com>
2015-09-13 10:11:54 +02:00
Adrian Alonso
1368f99346 thermal: imx_thermal: rework driver to be reused
Rework imx_thermal driver to be used across i.MX
processor that support thermal sensor

Signed-off-by: Adrian Alonso <aalonso@freescale.com>
Signed-off-by: Peng Fan <Peng.Fan@freescale.com>
2015-09-13 10:11:53 +02:00
Tim Harvey
425640256a thermal: imx_thermal: fix busywait if IMX6 temp <0C
The temperature calculation must be typecasted to keep the compiler
from sign extending a negative value prior to division.

This fixes an issue where if the CPU temperature is <0C it will get stuck
in the busywait loop until the CPU heats up to 0C.

Cc: Ye Li <b37916@freescale.com>
Cc: Jason Liu <r64343@freescale.com>
Signed-off-by: Tim Harvey <tharvey@gateworks.com>
2015-07-10 10:15:19 +02:00
Tim Harvey
3b7ad216e2 thermal:imx_thermal: enter busywait cooling loop when over max CPU temp
Remove the check for temperature being within the min/max range and enter the
busywait cooling loop whenever the CPU temperature is over the critical temp.
This fixes the issue where if a board was booted at a temp greater than
the CPU temperature max, it would skip the loop and never indicate or try
to address the overtemp issue.

Cc: Ye Li <b37916@freescale.com>
Cc: Jason Liu <r64343@freescale.com>
Signed-off-by: Tim Harvey <tharvey@gateworks.com>
2015-07-10 09:23:32 +02:00
Tim Harvey
be56de6f33 thermal: imx_thermal: increase critical temperature threshold
The CPU temperature grade from OTP is now used to define the critical
threshold at which point we busyloop until we are below, however this
threshold is still too low.

Instead of 20C below the max CPU temperature, change it to 5C defined now
by TEMPERATURE_HOT_DETLA for clarity. Rename 'passive' to 'critical'
as that better defines our use case here. Additionally change the output
of the busyloop message to show the max CPU temperature as well as current.

Before:
CPU Temperature is 101 C, too hot to boot, waiting...
CPU Temperature is 101 C, too hot to boot, waiting...

After:
CPU Temperature (101C) too close to max (105C) waiting...
CPU Temperature (101C) too close to max (105C) waiting...

Cc: Stefan Roese <sr@denx.de>
Cc: Eric Nelson <eric.nelson@boundarydevices.com>
Cc: Heiko Schocher <hs@denx.de>
Cc: Nikita Kiryanov <nikita@compulab.co.il>
Cc: Jon Nettleton <jon.nettleton@gmail.com>
Cc: Jason Liu <r64343@freescale.com>
Cc: Ye Li <b37916@freescale.com>
Cc: Fabio Estevam <fabio.estevam@freescale.com>
Cc: Christian Gmeiner <christian.gmeiner@gmail.com>
Cc: Markus Niebel <Markus.Niebel@tq-group.com>
Cc: Peng Fan <b51431@freescale.com>
Signed-off-by: Tim Harvey <tharvey@gateworks.com>
2015-05-26 14:21:25 +02:00
Tim Harvey
a91db95479 thermal: imx_thermal: use CPU temperature grade for trip points
Replace the hard-coded values for min/max/passive with values derived from
the CPU temperature grade.

Signed-off-by: Tim Harvey <tharvey@gateworks.com>
2015-05-19 15:31:49 +02:00
Simon Glass
f94a1bed07 dm: Expand and complete Kconfig in drivers/
Expand the help messages for each driver. Add missing Kconfig for I2C,
SPI flash and thermal.

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Masahiro Yamada <yamada.m@jp.panasonic.com>
2015-02-12 10:35:33 -07:00
Fabio Estevam
7267c925b3 thermal: imx_thermal: Do not display calibration data
Printing the calibration data on every boot does not provide really useful
information:

U-Boot 2015.01-rc1-18266-ge7eb277 (Nov 24 2014 - 11:29:51)

CPU:   Freescale i.MX6Q rev1.2 at 792 MHz
CPU:   Thermal calibration data: 0x5d85067d
CPU:   Temperature 33 C
Reset cause: POR
Board: MX6-SabreSD

Do not display the calibration data in order to have a cleaner boot log.

Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com>
2014-12-01 10:20:18 +01:00
Ye.Li
e3568d2eca DM: thermal: Add imx thermal DM driver
Add a new thermal uclass for thermal sensor and implement the imx
thermal driver basing on this uclass.

Signed-off-by: Ye.Li <B37916@freescale.com>
Acked-by: Stefano Babic <sbabic@denx.de>
2014-11-21 15:30:01 +01:00