I tried to get the temperature of imx6s chip but failed!
First I config the kernel:
Device Drivers Generic Thermal sysfs driver > Temperature sensor driver for Freescale i.MX SoCs
The i.MX Linux® Reference Manual said that the thermal driver implements the SoC temperature monitor function and protection and it creates a sys file interface of /sys/class/thermal/thermal_zone0/ for user. But I see nothing via command "ls /sys/class/thermal/".
While I find some device infomation about tempmon in /sys/bus/platform/devices:
$ find /sys/bus/platform/devices/2000000.aips-bus:tempmon/
/sys/bus/platform/devices/2000000.aips-bus:tempmon/
/sys/bus/platform/devices/2000000.aips-bus:tempmon/power
/sys/bus/platform/devices/2000000.aips-bus:tempmon/power/control
/sys/bus/platform/devices/2000000.aips-bus:tempmon/power/runtime_active_time
/sys/bus/platform/devices/2000000.aips-bus:tempmon/power/autosuspend_delay_ms
/sys/bus/platform/devices/2000000.aips-bus:tempmon/power/runtime_status
/sys/bus/platform/devices/2000000.aips-bus:tempmon/power/runtime_suspended_time
/sys/bus/platform/devices/2000000.aips-bus:tempmon/driver_override
/sys/bus/platform/devices/2000000.aips-bus:tempmon/modalias
/sys/bus/platform/devices/2000000.aips-bus:tempmon/subsystem
/sys/bus/platform/devices/2000000.aips-bus:tempmon/of_node
/sys/bus/platform/devices/2000000.aips-bus:tempmon/uevent
I also preferred to the following link and it cannot solve my problem:
"Get the temperature of i.mx6 https://community.nxp.com/message/398431#comment-398442 ".
But with the same board, I get the temperature data using the linux 3.14.28 kernel：
$ ls /sys/class/thermal/
cooling_device0 cooling_device1 thermal_zone0
$ ls /sys/class/thermal/thermal_zone0/
cdev0 cdev1 mode power temp trip_point_0_type trip_point_1_type uevent
cdev0_trip_point cdev1_trip_point policy subsystem trip_point_0_temp trip_point_1_temp type
So what's wrong with my linux 4 kernel?
