Re: [Linuxptp-devel] POSIX Timers for External Hardware

The latency from software responding to the timer and then firing an event on a gpio would be eliminated. No, the latency increases when using PHC. That is the whole point. In the scenario I am describing, a hardware event is fired immediately when the PHC timer expires in hardware.  That

Re: [Linuxptp-devel] PTP Periodic Output to Multiple Pins

Right, and getting back to original question, if you want multiple periodic outputs at the same time, you simply provide multiple channels in the driver and then assign each pin its own channel. That is the solution I am currently using.  However, it involves a custom driver to assign a

Re: [Linuxptp-devel] PTP Periodic Output to Multiple Pins

On Fri, Mar 23, 2018 at 05:00:18PM +, Keller, Jacob E wrote: > > The PTP subsystem only allows one pin to be mapped to one channel for > > periodic > > outputs. Why does the ptp subsystem force only allowing one pin index to > > one a > > periodic output channel? It seems like a common use

Re: [Linuxptp-devel] PTP Periodic Output to Multiple Pins

> -Original Message- > From: Alex Fontaine [mailto:fonta...@arlut.utexas.edu] > Sent: Friday, March 23, 2018 9:26 AM > To: linuxptp-devel@lists.sourceforge.net > Subject: [Linuxptp-devel] PTP Periodic Output to Multiple Pins > > The PTP subsystem only allows one pin to be mapped to one

Re: [Linuxptp-devel] PTP Periodic Output to Multiple Pins

On Fri, Mar 23, 2018 at 11:26:29AM -0500, Alex Fontaine wrote: > The PTP subsystem only allows one pin to be mapped to one channel for > periodic outputs. Why does the ptp subsystem force only allowing one pin > index to one a periodic output channel? Because this has been sufficient up until

Re: [Linuxptp-devel] POSIX Timers for External Hardware

On Fri, Mar 23, 2018 at 11:03:50AM -0500, Alex Fontaine wrote: > The kernel documentation states the ability to use POSIX timers with the PTP > hardware clocks. This does not appear to be implemented in the ptp > subsystem drivers. What is preventing this timer interface from being >

[Linuxptp-devel] PTP Periodic Output to Multiple Pins

The PTP subsystem only allows one pin to be mapped to one channel for periodic outputs. Why does the ptp subsystem force only allowing one pin index to one a periodic output channel? It seems like a common use case to want to assign a single periodic output to multiple pins. The current

[Linuxptp-devel] POSIX Timers for External Hardware

The kernel documentation states the ability to use POSIX timers with the PTP hardware clocks. This does not appear to be implemented in the ptp subsystem drivers. What is preventing this timer interface from being implemented? Previous discussions[1] indicate the PHC timer functionality

[Linuxptp-devel] [PATCH v2 0/4] phc2sys: long-opts/cfg-file/tS

The first version of this path series had formatting issues. Therefore, I send the patches once more, with (hopefully) correct formatting. This patch series changes phc2sys. It implements the possibility to use a configuration file, enables the usage of long options and allows configuring the

[Linuxptp-devel] [PATCH v2 1/4] phc2sys: Implement configuration file handling

Signed-off-by: Peter Schneider --- phc2sys.c | 11 ++- 1 file changed, 10 insertions(+), 1 deletion(-) diff --git a/phc2sys.c b/phc2sys.c index 5c54055..c2f0d8e 100644 --- a/phc2sys.c +++ b/phc2sys.c @@ -1286,6 +1286,7 @@ static void usage(char *progname)

[Linuxptp-devel] [PATCH v2 2/4] phc2sys: Implement handling of Long options

Signed-off-by: Peter Schneider --- phc2sys.c | 13 +++-- 1 file changed, 11 insertions(+), 2 deletions(-) diff --git a/phc2sys.c b/phc2sys.c index c2f0d8e..278ab56 100644 --- a/phc2sys.c +++ b/phc2sys.c @@ -1317,11 +1317,13 @@ int main(int argc, char *argv[]) char

[Linuxptp-devel] [PATCH v2 3/4] phc2sys: Implement using transportSpecific value

Signed-off-by: Peter Schneider --- phc2sys.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/phc2sys.c b/phc2sys.c index 278ab56..c6ab788 100644 --- a/phc2sys.c +++ b/phc2sys.c @@ -877,7 +877,8 @@ static int init_pmc(struct config *cfg, struct node *node,

[Linuxptp-devel] [PATCH v2 4/4] phc2sys: Doc long opts / cfgfile handling

Signed-off-by: Peter Schneider --- phc2sys.8 | 103 -- 1 file changed, 101 insertions(+), 2 deletions(-) diff --git a/phc2sys.8 b/phc2sys.8 index 4fc4fa3..fa2dbc9 100644 --- a/phc2sys.8 +++ b/phc2sys.8 @@ -8,10 +8,16 @@