colibri_t30: integrate thermal throttling

As our hardware only allows triggering an interrupt on over-temperature
shutdown we setup a workqueue to catch leaving it again.

For Tegra 3 NVIDIA relies on the regular Linux thermal subsystem.

As follows some output during a thermal throttling run:

root@colibri-t30:~# cat /sys/bus/i2c/devices/4-004c/temp2_os
45000

RAM 400/980MB (lfb 135x4MB) IRAM 0/255kB(lfb 255kB)
cpu [12%,2%,3%,6%]@475 EMC 533 AVP 81 VDE 400 EDP limit 1300000
Temperatures CPU 42.4 Board 36.4

root@colibri-t30:~# cat /sys/bus/i2c/devices/4-004c/temp2_os
60000

RAM 400/980MB (lfb 135x4MB) IRAM 0/255kB(lfb 255kB)
cpu [14%,5%,4%,4%]@1300 EMC 533 AVP 81 VDE 400 EDP limit 1300000
Temperatures CPU 54.2 Board 47.8

RAM 400/980MB (lfb 135x4MB) IRAM 0/255kB(lfb 255kB)
cpu [100%,100%,100%,100%]@1200 EMC 533 AVP 81 VDE 400 EDP limit 1200000
Temperatures CPU 70.4 Board 56.6

root@colibri-t30:~# cat /sys/bus/i2c/devices/4-004c/temp2_os
75000

RAM 400/980MB (lfb 135x4MB) IRAM 0/255kB(lfb 255kB)
cpu [54%,49%,48%,48%]@1200 EMC 533 AVP 81 VDE 400 EDP limit 1200000
Temperatures CPU 70.9 Board 57.1

RAM 400/980MB (lfb 135x4MB) IRAM 0/255kB(lfb 255kB)
cpu [100%,100%,100%,100%]@1100 EMC 533 AVP 81 VDE 400 EDP limit 1100000
Temperatures CPU 75.3 Board 60.5

root@colibri-t30:~# cat /sys/bus/i2c/devices/4-004c/temp2_os
85000

RAM 401/980MB (lfb 135x4MB) IRAM 0/255kB(lfb 255kB)
cpu [65%,61%,61%,61%]@1100 EMC 533 AVP 81 VDE 400 EDP limit 1100000
Temperatures CPU 75.2 Board 61.0

RAM 401/980MB (lfb 135x4MB) IRAM 0/255kB(lfb 255kB)
cpu [100%,100%,100%,100%]@1000 EMC 533 AVP 81 VDE 400 EDP limit 1100000
Temperatures CPU 85.1 Board 69.8

RAM 401/980MB (lfb 135x4MB) IRAM 0/255kB(lfb 255kB)
cpu [100%,100%,100%,100%]@760 EMC 533 AVP 81 VDE 400 EDP limit 1100000
Temperatures CPU 85.1 Board 69.9

root@colibri-t30:~# cat /sys/class/thermal/cooling_device0/cur_state
0
root@colibri-t30:~# cat /sys/class/thermal/cooling_device0/max_state
10
root@colibri-t30:~# cat /sys/class/thermal/cooling_device0/type
balanced

root@colibri-t30:~# cat /sys/class/thermal/thermal_zone0/cdev0_trip_point
0
root@colibri-t30:~# cat /sys/class/thermal/thermal_zone0/temp
84531
root@colibri-t30:~# cat /sys/class/thermal/thermal_zone0/trip_point_0_temp
85000
root@colibri-t30:~# cat /sys/class/thermal/thermal_zone0/trip_point_0_type
passive
root@colibri-t30:~# cat /sys/class/thermal/thermal_zone0/type
lm95245_remote

0 files changed, 0 insertions, 0 deletions