[Linux-stm32] [RFC] Add trig_ts function in STM to generate TRIG_TS packet periodically

[Alexander Shishkin]

Jinlong Mao <quic_jinlmao at quicinc.com> writes:

> On PC tool, it can show the logs from ETR in real time.
>
> When one small packet send from STM to ETR, it can be stuck between STM 
> and ETR.
> When the packet stuck happens, it will be flushed to ETR only when some 
> other packets
> generated from STM source or CTI flush commands are sent. If the time is 
> too long to wait
> for next packets coming, user will consider that issue happens with 
> previous small packet.
> And user's requirement is that packet from STM can be flushed to ETR 
> automatically instead
> of sending commands manually.
>
> Is it appropriate to add a sysfs node for STM to generate the trigger 
> packet periodically for such case ?

There's stm_heartbeat that will send a string via STM on a timer. It
will come on its own channel, so your PC tool should be able to ignore
it. Would that help?

Regards,
--
Alex