[BPI-R3] Thermal zone statistics

[Rooot]

Hi, since i use openwrt on my device, I have a problem in the thermal zone page. i am now using openwrt stable 23.05.0

i installed the statistics that way :

opkg install collectd
opkg install lm-sensors
opkg install collectd-mod-sensors
opkg install collectd-mod-thermal
opkg install luci-app-statistics

i enabled the thermal pluggin

and configured this way :

My problem is that “pictures” missing in the thermal page zone, i don’t know what it tries to display.

[Rooot]

Hello, will the displayed temperature problem ever be fixed? (on mt7915_phy1)

[frank-w]

Afaik the issue is stalled

Wrong temp reading on MT7915_phy0

[Miles28 (Miles)]

I have this same problem. In my country we have harsh summers with high temperatures. Should I do anything to fix this incorrect temperature reading?

Thanks in advance.

[frank-w]

Imho this is caused by wrong calibrationbdata so the correct way would be passing the right calibration data to the driver but i do not know how

[Rooot]

why sinovoip doesn’t give any help on this ??

[Miles28 (Miles)]

Well, my only concern on this topic is if anyone knows about any stability issues in warm weather conditions.

[frank-w]

The problem is only for 1 of 2 thermal sensors on wifi frontend. If you adjust temperature regulation (fan,shutdown,…) on the soc (and ignore the frontend temp) you should be on good way

[Miles28 (Miles)]

For fan, I have these lines on /etc/rc.local

echo 45000 > /sys/class/thermal/thermal_zone0/trip_point_4_temp
echo 45000 > /sys/class/thermal/thermal_zone0/trip_point_3_temp
echo 45000 > /sys/class/thermal/thermal_zone0/trip_point_2_temp
echo 45000 > /sys/class/thermal/thermal_zone0/trip_point_1_temp

What would be the temperature regulation for shutdown on the soc?

[Lorem_amicus (Michael Fischer)]

What you are looking for is trip_point_0_temp (critical):

→ 125°C

I asked in another chat, why you choose the same temperature for all tripping points? The trip_points connect temperature with PWM:

trip_point_4 → active → fan running normal → pwm1 = 255

trip_point_3 → active → fan running fast → pwm1 = 96

trip_point_2 → active → fan running very fast → pwm1 = 0

trip_point_1 → hot → fan running normal → pwm1 = 255

trip_point_0 → critical → reboot

You can not change the temparature of trip_point_0 (as far as I now) this will cause a reboot (I tried ).

PWN: If you understand how PWN ist defind (between 0 and 255), than it becomes clear, that trip_point_2 is the fastest mode which is defind right now.

Additionaly I found no way to turn the fan off.

Are you in the same room with the router over night (noisy fan)? And if you are live in a hot area, than the nights are cold? And even if not, you can try this:

echo 35000 > /sys/class/thermal/thermal_zone0/trip_point_4_temp

echo 40000 > /sys/class/thermal/thermal_zone0/trip_point_3_temp

echo 45000 > /sys/class/thermal/thermal_zone0/trip_point_2_temp

or:

echo 35000 > /sys/class/thermal/thermal_zone0/trip_point_4_temp

echo 45000 > /sys/class/thermal/thermal_zone0/trip_point_3_temp

echo 55000 > /sys/class/thermal/thermal_zone0/trip_point_2_temp

I’m not sure that “this chat” is the right place. The topic is about W-Lan chips temperature not CPU. There are other chats too:

Banana pi R3 fan with PWM

I also tested the “new” echos for changing trip_point values. My setup is a 55mm fan (PLD06010B12HH 12V 0.40A). The fan is capable of handling 5V and 12V. With 5V it runs slower. But I resoldered the 0Ω resistor on the bottom from R317 to R318. So it runs with 12V. [WhatsApp Bild 2023-12-29 um 00.46.53_85ef69b8] As the picture shows, i use the “normal” 3 pin port with PWM for running the fan. My R3 runs the last stable openWRT firmware: [grafik] My results: [grafik] Yes, it is possibl…

Banana pi R3 can not control pwm fan

I built and deployed the openwrt firmware for it, I found it not support fan control. root> cd /sys/class/pwm/pwmchip0 root> echo 0 > export root> ls device export npwm power subsystem uevent unexport no dev file or dir. some dmesg info (13.0 KB) mt7986a-bananapi-bpi-r3.dts|default file in default source code (16.0 KB)

[frank-w]

pwm values are defined here:

frank-w/BPI-Router-Linux/blob/6.7-dango-lro/arch/arm64/boot/dts/mediatek/mt7986a-bananapi-bpi-r3.dts#L49

for the corresponding lower 3 trip points (or highest based on the names youve posted).

the hot and critical trip are not defined for fan usage (no cooling level)

frank-w/BPI-Router-Linux/blob/6.7-dango-lro/arch/arm64/boot/dts/mediatek/mt7986a-bananapi-bpi-r3.dts#L152

they are used for system/thermal driver to limit cpu usage (trottle down as far as possible - r3 have no pmic so real throttle is not possible only by killing processes or software-limiting) and the critical forces system-shutdown

[Lorem_amicus (Michael Fischer)]

Thanks, good information ! I will delate some lines in my answer

( looks not finished… ).

So, it make sense, to change the temperature for trip_point_1? The fan runs after activating trip_point_2 with 100%, an if the temperature increses more, trip_point_1 will decrese the performance? This sounds good!

But … the fan runs normal. I have to think about …