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Date: Wed, 12 Mar 2014 07:58:37 +0100 From: Christian Riesch <christian.riesch@...cron.at> To: Richard Cochran <richardcochran@...il.com>, Sørensen, <Stefan.Sorensen@...ctralink.com> cc: netdev@...r.kernel.org, linux-kernel@...r.kernel.org, bhutchings@...arflare.com, davem@...emloft.net Subject: Re: [PATCH RFC net-next v1 0/9] ptp: dynamic pin control Hi Richard, --On March 10, 2014 14:42 +0100 Richard Cochran <richardcochran@...il.com> wrote: > On Mon, Mar 10, 2014 at 12:52:57PM +0000, Sørensen, Stefan wrote: >> >> What are the n_ext_ts and n_per_out supposed to be set to now? The >> number of pins configured for the relevant function or the number of >> channels that are available for the function? > > They are the number of available functions. This is not necessarily the > same as the number of pins. Many chips have more functions than pins. > >> The implementation is limited to a single function for each pin - the >> dp83640 supports an ext_ts and several periodic outputs on the same pin, >> but I do not see that many real-world uses. > > Yes, it does support different functions on a single pin, but not at > the same time. You have to choose what function you want on each pin, > and that is what the new ioctl lets you do. > > I did not change the n_per_out in this series, Why not? I think it would be a good idea to set both n_ext_ts and n_per_out to the correct value right from the start (8, right?). Christian > but once this basic > support gets merged, then you will be able to increase n_per_out for > the dp83640 with little extra effort. -- To unsubscribe from this list: send the line "unsubscribe netdev" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
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