[PATCH v2 0/2] Enable i.MX7 SOLO temperature sensor

Francesco Dolcini francesco.dolcini at toradex.com
Mon Jan 24 00:28:01 PST 2022


To be able to read the T junction on i.MX CPU the imx-cpufreq-dt needs to be
loaded, however this is currently not the case for i.MX7S given that it does
have only one operating frequency.

Add "fsl,imx7s" to cpufreq-dt-platdev blocklist and a single frequency
operating point to the CPU.

With that it is now possible to correctly read the CPU T junction.

Tested on Toradex Colibri iMX7S

[    6.232577] imx-cpufreq-dt imx-cpufreq-dt: cpu speed grade 0 mkt segment 1 supported-hw 0x1 0x2
...
[    6.880624] imx_thermal 30360000.anatop:tempmon: Extended Commercial CPU temperature grade - max:105C critical:100C passive:95C

root at colibri-imx7-02983025:~# cat /sys/class/thermal/thermal_zone0/temp 
38000

v2:
 - removed empty new line
 - rebased and tested on v5.17-rc1


Denys Drozdov (1):
  ARM: dts: imx7s: Define operating points table for cpufreq

Stefan Agner (1):
  cpufreq: Add i.MX7S to cpufreq-dt-platdev blocklist

 arch/arm/boot/dts/imx7s.dtsi         | 16 ++++++++++++++++
 drivers/cpufreq/cpufreq-dt-platdev.c |  1 +
 2 files changed, 17 insertions(+)

-- 
2.25.1




More information about the linux-arm-kernel mailing list