Thanks for your review!
On Tue, Dec 20, 2016 at 1:03 AM, Andrew Lunn <andrew@xxxxxxx> wrote:
>> > + 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.
For Linkstation/KuroBox-Pro, it's quite similar, and the user-land program is
called micro-evtd [0], which is co-maintained by Ryan Tandy and me in Debian.
[0] https://tracker.debian.org/pkg/micro-evtd
>> [0] https://lkml.org/lkml/2016/8/24/769
Do I need to modify anything related to the above UART slave device?
Cheers,
--
Roger Shimizu, GMT +9 Tokyo
PGP/GPG: 4096R/6C6ACD6417B3ACB1
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