From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id D19BEE81DE9 for ; Fri, 6 Oct 2023 12:38:29 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231817AbjJFMi2 (ORCPT ); Fri, 6 Oct 2023 08:38:28 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:36290 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231278AbjJFMi1 (ORCPT ); Fri, 6 Oct 2023 08:38:27 -0400 Received: from smtpcmd04131.aruba.it (smtpcmd04131.aruba.it [62.149.158.131]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 5428FC6 for ; Fri, 6 Oct 2023 05:38:24 -0700 (PDT) Received: from [192.168.1.56] ([79.0.204.227]) by Aruba Outgoing Smtp with ESMTPSA id ok5zqNRDGRbLIok5zqXul2; Fri, 06 Oct 2023 14:38:20 +0200 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=aruba.it; s=a1; t=1696595900; bh=+Vi3CNkLL923Lc+E4OFWJ7cr/sftotS9u6XSjMvqcXk=; h=Date:MIME-Version:Subject:To:From:Content-Type; b=Je+7GG8IHeaPYFuOXLb8gP4brgdGl25dVroRVBjHxgu2VfoaBqrzw+1/AJV3vom1e 53ZMmICLh66XFtzpLyKV9Bce8crjdX68aJCTUk9CPBoB+n7c6EcKZ4xNKx8Bpi8M7m rQP9yMWK9m9Jeuhyrm9SA9Ao/XfUc6j6J7KXKL25Y2UHWj9vKfxlZoTVbWhNk8+X9L ptuA+kntFw5VapGntF1L9Rs3I1Od99v4tnAEa5E8w7qGoC0j6f9/g08O8rPHnhbFw8 4H3tChtfXG9nigL5GKP8R70h9mrQ8eYR3aqKRm0TSVso4lHmubJmU5cCOpjL4oNxQV hmMFhwruAJr5Q== Message-ID: <539bcab9-e8f8-524a-c14b-a5879ce4415a@enneenne.com> Date: Fri, 6 Oct 2023 14:38:19 +0200 MIME-Version: 1.0 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:102.0) Gecko/20100101 Thunderbird/102.15.1 Subject: Re: [PATCH v1] Documentation: driver-api: pps: Update PPS generator documentation Content-Language: en-US To: lakshmi.sowjanya.d@intel.com, linux-kernel@vger.kernel.org Cc: andriy.shevchenko@linux.intel.com, pandith.n@intel.com, Greg Kroah-Hartman References: <20231006121531.22450-1-lakshmi.sowjanya.d@intel.com> From: Rodolfo Giometti In-Reply-To: <20231006121531.22450-1-lakshmi.sowjanya.d@intel.com> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit X-CMAE-Envelope: MS4xfGOrjqQZD8VuRDeDnELn8tKnRLD5NoH+6fIeey6Y5s7Ot9VriDTYsg78/q+GCjoms9J9nqkkMiU6vKy0Ibul+EzSrVpR7c2ZIpN82snDPc9yTHXd21R4 +9ZkNcFqN5jTKstDAqqt0fCN7WRy2ygvRcRXLOEgl6g01W/m4W6l/XdyTS4VdzApG4ggyV3x4qHh9xXF33EYtPnCgRDo7NLsFTFpH54KkoNDe6YMEfYPYqwf L8m0HRxGIwMZIshI7K950lFl3H5NG7UcsVcJ9m3A4zqJ5pQaN+edwMuL0s+ArVnKqTAj/WHnaypOPaKTx6HmS7rfWGCT/8wTf3f99IfhDCZ0dRuZAu/+OMue PA4UtGL/ Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 06/10/23 14:15, lakshmi.sowjanya.d@intel.com wrote: > From: Pandith N > > PPS documentation has a generalized section for generators. Update the > section so any new generator documentation can be appended. > > Signed-off-by: Pandith N > Signed-off-by: Lakshmi Sowjanya D > --- > Documentation/driver-api/pps.rst | 16 +++++++++++----- > 1 file changed, 11 insertions(+), 5 deletions(-) > > diff --git a/Documentation/driver-api/pps.rst b/Documentation/driver-api/pps.rst > index 2d6b99766ee8..78dded03e5d8 100644 > --- a/Documentation/driver-api/pps.rst > +++ b/Documentation/driver-api/pps.rst > @@ -200,11 +200,17 @@ Generators > > Sometimes one needs to be able not only to catch PPS signals but to produce > them also. For example, running a distributed simulation, which requires > -computers' clock to be synchronized very tightly. One way to do this is to > -invent some complicated hardware solutions but it may be neither necessary > -nor affordable. The cheap way is to load a PPS generator on one of the > -computers (master) and PPS clients on others (slaves), and use very simple > -cables to deliver signals using parallel ports, for example. > +computers' clock to be synchronized very tightly. > + > + > +Parallel port generator > +------------------------ > + > +One way to do this is to invent some complicated hardware solutions but it > +may be neither necessary nor affordable. The cheap way is to load a PPS > +generator on one of the computers (master) and PPS clients on others > +(slaves), and use very simple cables to deliver signals using parallel > +ports, for example. > > Parallel port cable pinout:: > Acked-by: Rodolfo Giometti -- GNU/Linux Solutions e-mail: giometti@enneenne.com Linux Device Driver giometti@linux.it Embedded Systems phone: +39 349 2432127 UNIX programming skype: rodolfo.giometti