No CPU or GPU temperature readings

[Elarion245]

Describe the issue you are experiencing

After Boot, System Monitor finds no CPU Temperature or GPU Temperature sensors. Indeed /sys/class/thermal ist not showing any thermal_zone* devices.

More information is available here: https://forum.radxa.com/t/rockpi-4-cpu-temperature/9530 sounds like an overlay for tsadc activation is required.

What operating system image do you use?

rock-4c-plus

What version of Home Assistant Operating System is installed?

10

Did you upgrade the Operating System.

Yes

Steps to reproduce the issue

1. Check /sys/class/thermal after boot

Anything in the Supervisor logs that might be useful for us?

N/A

Anything in the Host logs that might be useful for us?

No particular message. Looks like a disabled feature

System information

No response

Additional information

No response

[citruz]

Interesting, this only seems to apply to the 4C+. All other boards inherit from rockchip/rk3399-rock-pi-4.dtsi which includes the following snippet to activate tsadc:

&tsadc {
    status = "okay";

    /* tshut mode 0:CRU 1:GPIO */
    rockchip,hw-tshut-mode = <1>;
    /* tshut polarity 0:LOW 1:HIGH */
    rockchip,hw-tshut-polarity = <1>;
};

And indeed there are two thermal zones on my 4B+. I can try to add that into the 4C+ device tree, but I would need you to test it.

[Elarion245]

Sounds great! I will test and report back once you are comfortable with an update. Thank you!

[Elarion245]

Don't know if you changed something on the new beta, but it had no impact on the missing temperature sensors on the 4C+

[citruz]

No I didn’t change anything yet, but I am planning to post a second beta with this change in the next days!

[citruz]

Please try https://github.com/citruz/haos-rockpi/releases/download/10.1%2B20230523beta/haos_rock-4c-plus-10.1.dev20230524.WITH.TSADC.img.xz

I patched the device tree directly, no need for an overlay.

[Elarion245]

Works perfectly!

The systemmonitor now finds the CPU temperature. I was also able to manually read out the GPU-temp via the following sensor definition

- platform: command_line
    name: "GPU Temperature"
    command: "cat /sys/class/thermal/thermal_zone1/temp"
    unit_of_measurement: "°C"
    value_template: '{{ value | multiply(0.001) | round(1) }}'
    device_class: "temperature"

Thanks a lot for this! Now I am finally able to see if I need bigger heat-sinks or if I can put somehing on top of the housing.

[citruz]

Oh that's cool, thanks for posting the sensor configuration! Added those two to my dashboard as well.

[Elarion245]

I'm glad, if there is something that I can provide that helps you ;)

[citruz]

Implemented in latest release https://github.com/citruz/haos-rockpi/releases/tag/10.1%2B20230526