Re: [PATCH 0/5] Enable PPS reporting for USB serial devices

From: Rodolfo Giometti
Date: Tue Sep 10 2013 - 03:31:26 EST


On Mon, Sep 09, 2013 at 06:01:15PM +0200, Paul Chavent wrote:
> Hi.
>
> This series enable the PPS reporting for USB serial devices.

I have nothing against with this solution but consider that reporting
a PPS signal through USB bus may add unknown delays that may vanish
clock stability... as far as I know you should not use USB serial port
with PPS. Have you some statistics about clock stability in a real
implementation?

Ciao,

Rodolfo

--

GNU/Linux Solutions e-mail: giometti@xxxxxxxxxxxx
Linux Device Driver giometti@xxxxxxxx
Embedded Systems phone: +39 349 2432127
UNIX programming skype: rodolfo.giometti
Freelance ICT Italia - Consulente ICT Italia - www.consulenti-ict.it
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/