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* thermal: add i.MX8 thermal driverPeng Fan2019-07-193-0/+213
| | | | | | Add i.MX8 thermal driver to support get temperature from SCU. Signed-off-by: Peng Fan <peng.fan@nxp.com>
* SPDX: Convert all of our single license tags to Linux Kernel styleTom Rini2018-05-073-7/+3
| | | | | | | | | | | | | | | | | | | | 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>
* thermal: ti-bandgap: Add support for temperature sensorFaiz Abbas2017-11-213-0/+205
| | | | | | | | | | 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>
* thermal: imx: fix calculationPeng Fan2017-05-181-4/+6
| | | | | | | | 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>
* imx: thermal: update imx6 thermal driver according new equationPeng Fan2017-05-181-17/+21
| | | | | | | | | | | | | | | | | | | | | | | | | | >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>
* imx: thermal: Kconfig: add MX7Peng Fan2017-01-021-1/+1
| | | | | | | 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>
* thermal: Kconfig: Add IMX_THERMAL entryJagan Teki2016-10-261-0/+13
| | | | | | | | | | | | 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>
* Fix various typos, scattered over the code.Robert P. J. Day2016-05-051-1/+1
| | | | | | | | | | | | | 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 Rev1.1Peng Fan2016-01-071-8/+15
| | | | | | | | | | | | 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>
* thermal: imx_thermal: Do not print on errorFabio Estevam2015-09-131-1/+1
| | | | | | | | | | | | | | | 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>
* thermal: imx: add imx7d soc thermal supportAdrian Alonso2015-09-131-6/+84
| | | | | | Add imx7 SoC thermal driver support Signed-off-by: Adrian Alonso <aalonso@freescale.com>
* thermal: imx_thermal: rework driver to be reusedAdrian Alonso2015-09-132-8/+12
| | | | | | | | 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>
* thermal: imx_thermal: fix busywait if IMX6 temp <0CTim Harvey2015-07-101-1/+1
| | | | | | | | | | | | 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>
* thermal:imx_thermal: enter busywait cooling loop when over max CPU tempTim Harvey2015-07-101-10/+6
| | | | | | | | | | | | 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>
* thermal: imx_thermal: increase critical temperature thresholdTim Harvey2015-05-261-6/+9
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 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>
* thermal: imx_thermal: use CPU temperature grade for trip pointsTim Harvey2015-05-191-10/+19
| | | | | | | 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>
* dm: Expand and complete Kconfig in drivers/Simon Glass2015-02-121-0/+7
| | | | | | | | 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>
* thermal: imx_thermal: Do not display calibration dataFabio Estevam2014-12-011-2/+0
| | | | | | | | | | | | | | | | | 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>
* DM: thermal: Add imx thermal DM driverYe.Li2014-11-213-0/+216
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>
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