Does it make sense to create a centralized fan control module?
guoheyi at linux.alibaba.com
Fri Jun 11 11:14:04 AEST 2021
Right now fan related data like tacho and PWM is fetched in
dbus-sensors, and published to d-bus as sensor data, while fan control
is made in another module like pid-control, which can fetch data and set
value via d-bus.
In some common sense, we may think about putting all fan related work
into one single module (which may be based on pid-control), i.e. it can
read tacho and PWM from hardware directly, calculate the required PWM by
some algorithm like PID, and then write to PWM hardware directly; the
data will also be published to d-bus for other modules to consume, like
fansensor from dbus-sensors.
Does it make sense to do that? Or is there any reason for the current
I'm new to OpenBMC and some of my understanding may be totally wrong.
Looking forward to your expert advice.
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