A tool to control 25W POE Hat fan speed by temperature automatically for ROCK5B.
- Control fan speed by temperature. (above 45 degrees)
- set fan speed manually
Device Tree Overlay enabling PWM8 is required.
Enable pwm8 overlay via armbian-config or add manually
# fetch device tree overlay from vendor kernel
wget https://raw.githubusercontent.com/armbian/linux-rockchip/rk-6.1-rkr1/arch/arm64/boot/dts/rockchip/overlay/rk3588-pwm8-m0.dts
# compile overlay
dtc -O dtb -o rk3588-pwm8-m0.dtbo -b 0 -@ rk3588-pwm8-m0.dts
# copy and update prefix to match armbian default of `rockchip-rk3588'
cp rk3588-pwm8-m0.dtbo /boot/dtb/rockchip/overlay/rockchip-rk3588-pwm8-m0.dtbo
# enable overlay in /boot/armbianEnv.txt -- assumes no other overlays exist
# you may want to do this via armbian-config now instead
echo "overlays=pwm8-m0" >> /boot/armbianEnv.txtrebooo afterwards to load overlay
make package
dpkg -i fan-control*.debsystemctl enable fan-control
systemctl start fan-controlconfiguration file locations is /etc/fan-control.json, Configuration parameter description:
| Configuration | Description |
|---|---|
| pwmchip | pwmchip id, 1 for auto scan |
| gpio | gpio id, 0 is default gpio |
| pwm-period | PWM period |
| temp-map | temperature configuration table |
| temp | temperature, in degrees Celsius |
| duty | duty ratio |
| duration | duration, in second |
MIT License