u-boot.git/drivers/thermal, branch v2018.09

SPDX: Convert all of our single license tags to Linux Kernel style

2018-05-07T13:34:12+00:00

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

thermal: ti-bandgap: Add support for temperature sensor

2017-11-21T13:03:38+00:00

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 
Reviewed-by: Simon Glass

thermal: imx: fix calculation

2017-05-18T09:23:31+00:00

Fix calculation. do_div can not handle negative values.
Use div_s64_rem to handle the calculation.

Signed-off-by: Peng Fan 
Cc: Stefano Babic

imx: thermal: update imx6 thermal driver according new equation

2017-05-18T09:23:31+00:00

>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 
Cc: Stefano Babic

imx: thermal: Kconfig: add MX7

2017-01-02T16:08:25+00:00

The thermal drivers support i.MX6 and i.MX7, add MX7 in Kconfig file.

Signed-off-by: Peng Fan 
Cc: Stefano Babic

thermal: Kconfig: Add IMX_THERMAL entry

2016-10-26T14:53:16+00:00

Added kconfig for IMX_THERMAL driver.

Cc: Simon Glass 
Cc: Fabio Estevam 
Cc: Stefano Babic 
Cc: Peng Fan 
Cc: Matteo Lisi 
Cc: Michael Trimarchi 
Signed-off-by: Jagan Teki

Fix various typos, scattered over the code.

2016-05-06T01:39:26+00:00

Spelling corrections for (among other things):

* environment
* override
* variable
* ftd (should be "fdt", for flattened device tree)
* embedded
* FTDI
* emulation
* controller

imx: mx7: fix the temperature checking for Rev1.1

2016-01-07T16:53:11+00:00

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 
Cc: Stefano Babic 
Cc: Tim Harvey 
Cc: Fabio Estevam 
Cc: Adrian Alonso

thermal: imx_thermal: Do not print on error

2015-09-13T08:49:21+00:00

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

thermal: imx: add imx7d soc thermal support

2015-09-13T08:11:54+00:00

Add imx7 SoC thermal driver support

Signed-off-by: Adrian Alonso