> > + reset {
> > + compatible = "linkstation,power-off";
> > + reg = <0x12100 0x100>;
> > + clocks = <&core_clk 0>;
> > + };
>
> This might be another user for UART slave device [0].
> [0] https://lkml.org/lkml/2016/8/24/769
>
> Is the UART port used for anything else besides the reset
> controller?
I don't know much about these specific devices, but the qnap
equivalent, there is a user space daemon which also talks to the
microcontroller, for things like a temperature sensor, buzzer, etc.
https://www.hellion.org.uk/qcontrol/
So the UART can be in a messed up state, which is why the QNAP driver,
which this code is modelled on, reset it back to a good state.
Andrew
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