Hi, schroete wrote on 18. Juni 2015 18:02:44 UTC+2: > > just seen that Hans did a temperature readout in sunxi-next in the > sun4i-ts module. >
If this is responsible for the value reported by /sys/devices/virtual/thermal/thermal_zone0/temp then the output seems to be wrong. Steps to reproduce: - ensure that the A20 board is idle and query /sys/devices/virtual/thermal/thermal_zone0/temp (will show you something below 37°C) - press your thumb on the A20 while running and check again Expected result: temperature <https://www.dict.cc/englisch-deutsch/temperature.html> exchange <https://www.dict.cc/englisch-deutsch/exchange.html> between thumb and SoC: If the SoC's temperature is below 37°C it should increase, if it's above it will decrease. What happens with kernel 4.0 or above: the temperature reported by thermal_zone0/temp will further decrease below 30° which seems to be impossible. Unfortunetaly I cannot provide patches but just report that there's something going wrong. When I do a 'stress -t 900 -c 2 -m 2 -i 2' on an A20 board with kernel 4.0.4 then temperature doesn't exceed 42.5°C (very unrealistic) when doing the same with kernel 3.4.107 and the sunxi-dbgreg module approach ('echo 'f1c25004:90' > /sys/devices/virtual/misc/sunxi-dbgreg/rw/write;') temperatures reported rise above 50°. -- You received this message because you are subscribed to the Google Groups "linux-sunxi" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. For more options, visit https://groups.google.com/d/optout.
