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linux/drivers/thermal/ti-soc-thermal
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Peter Ujfalusi b98467fe96 thermal: ti-soc-thermal: Disable the CPU PM notifier for OMAP4430 
It has been observed that on OMAP4430 (ES2.0, ES2.1 and ES2.3) the enabled
notifier causes errors on the DTEMP readout values:

ti-soc-thermal 4a002260.bandgap: in range ADC val: 52
ti-soc-thermal 4a002260.bandgap: in range ADC val: 64
ti-soc-thermal 4a002260.bandgap: in range ADC val: 64
ti-soc-thermal 4a002260.bandgap: out of range ADC val: 0
thermal thermal_zone0: failed to read out thermal zone (-5)
ti-soc-thermal 4a002260.bandgap: out of range ADC val: 0
thermal thermal_zone0: failed to read out thermal zone (-5)
ti-soc-thermal 4a002260.bandgap: out of range ADC val: 4
thermal thermal_zone0: failed to read out thermal zone (-5)
ti-soc-thermal 4a002260.bandgap: in range ADC val: 100

raw 100 translates to 133 Celsius on omap4-sdp, triggering shutdown due to
critical temperature.

When the notifier is disable for OMAP4430 the DTEMP values are stable:
ti-soc-thermal 4a002260.bandgap: in range ADC val: 56
ti-soc-thermal 4a002260.bandgap: in range ADC val: 56
ti-soc-thermal 4a002260.bandgap: in range ADC val: 57
ti-soc-thermal 4a002260.bandgap: in range ADC val: 57
ti-soc-thermal 4a002260.bandgap: in range ADC val: 56

Fixes: 5093402e5b ("thermal: ti-soc-thermal: Enable addition power management")
Signed-off-by: Peter Ujfalusi <peter.ujfalusi@ti.com>
Tested-by: Tony Lindgren <tony@atomide.com>
Acked-by: Keerthy <j-keerthy@ti.com>
Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Link: https://lore.kernel.org/r/20201029100335.27665-1-peter.ujfalusi@ti.com
2020-11-12 12:30:29 +01:00
..
dra752-bandgap.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 336 2019-06-05 17:37:07 +02:00
dra752-thermal-data.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 282 2019-06-05 17:36:37 +02:00
Kconfig treewide: Add SPDX license identifier - Makefile/Kconfig 2019-05-21 10:50:46 +02:00
Makefile License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
omap3-thermal-data.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 282 2019-06-05 17:36:37 +02:00
omap4-thermal-data.c thermal: ti-soc-thermal: Fix bogus thermal shutdowns for omap4430 2020-09-04 11:52:46 +02:00
omap4xxx-bandgap.h thermal: ti-soc-thermal: Fix bogus thermal shutdowns for omap4430 2020-09-04 11:52:46 +02:00
omap5-thermal-data.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 282 2019-06-05 17:36:37 +02:00
omap5xxx-bandgap.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 336 2019-06-05 17:37:07 +02:00
ti-bandgap.c thermal: ti-soc-thermal: Disable the CPU PM notifier for OMAP4430 2020-11-12 12:30:29 +01:00
ti-bandgap.h thermal: ti-soc-thermal: Enable addition power management 2020-10-12 12:08:36 +02:00
ti-thermal-common.c thermal: ti-soc-thermal: Fix reversed condition in ti_thermal_expose_sensor() 2020-07-21 15:13:17 +02:00
ti-thermal.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 336 2019-06-05 17:37:07 +02:00
TODO