Dear Richard,
I am just wondering if it is possible to extend at linuxptp slave to
openvpn network via the tun interface the delivery of the software ptp
somehow.
" ethtool -T tun0
Time stamping parameters for tun0:
Capabilities:
software-transmit (SOF_TIMESTAMPING_TX_SOFTWARE)
software-receive (SOF_TIMESTAMPING_RX_SOFTWARE)
software-system-clock (SOF_TIMESTAMPING_SOFTWARE)
PTP Hardware Clock: none
Hardware Transmit Timestamp Modes: none
Hardware Receive Filter Modes: none
"
reference
https://forums.developer.nvidia.com/t/time-sensitive-networking-tsn-on-nx/125189/111?u=andrey1984
Regards,
Andrei Volodin
On 6/24/20, Andrey Volodin <andrevolo...@gmail.com> wrote:
> Dear Richard,
> Thank you for your response.
> We got nvidia Jetson NX devices that have support of hardware PTP on
> ethernet lan. We got also Ardu Simple SimpleRT2K unit that has the
> timepulse.
> Before we tested two Jetson NX connection over LAN with the method
> illustrated below.
> ethtool -T eth0 Time stamping parameters for eth0: Capabilities:
> hardware-transmit (SOF_TIMESTAMPING_TX_HARDWARE) software-transmit
> (SOF_TIMESTAMPING_TX_SOFTWARE) hardware-receive
> (SOF_TIMESTAMPING_RX_HARDWARE) software-receive
> (SOF_TIMESTAMPING_RX_SOFTWARE) software-system-clock
> (SOF_TIMESTAMPING_SOFTWARE) hardware-raw-clock
> (SOF_TIMESTAMPING_RAW_HARDWARE) PTP Hardware Clock: 0 Hardware Transmit
> Timestamp Modes: off (HWTSTAMP_TX_OFF) on (HWTSTAMP_TX_ON) Hardware Receive
> Filter Modes: none (HWTSTAMP_FILTER_NONE) ptpv1-l4-sync
> (HWTSTAMP_FILTER_PTP_V1_L4_SYNC) ptpv1-l4-delay-req
> (HWTSTAMP_FILTER_PTP_V1_L4_DELAY_REQ) ptpv2-l4-sync
> (HWTSTAMP_FILTER_PTP_V2_L4_SYNC) ptpv2-l4-delay-req
> (HWTSTAMP_FILTER_PTP_V2_L4_DELAY_REQ) ptpv2-l2-sync
> (HWTSTAMP_FILTER_PTP_V2_L2_SYNC) ptpv2-l2-delay-req
> (HWTSTAMP_FILTER_PTP_V2_L2_DELAY_REQ) ptpv2-event
> (HWTSTAMP_FILTER_PTP_V2_EVENT)
>
>
> ----------------------------------------------------
>
> *Host side*
> ifconfig eth0 down
> ifconfig eth0 up
> ifconfig eth0 0.0.0.0
> ip addr add 10.0.0.1/24 dev eth0
> ip link set dev eth0 up
> timedatectl set-ntp false
> date 010100002018
> phc_ctl /dev/ptp0 set
> phc_ctl /dev/ptp0 get
> ptp4l -f gPTP.cfg -i eth0 -p /dev/ptp0 -m
>
> *DUT side*
> ifconfig eth0 down
> ifconfig eth0 up
> ifconfig eth0 0.0.0.0
> ip addr add 10.0.0.2/24 dev eth0
> ip link set dev eth0 up
> timedatectl set-ntp false
> phc_ctl /dev/ptp0 get
> ptp4l -f gPTP.cfg -i eth0 -p /dev/ptp0 -s -m
>
> --------------------------------------------------
>
> the question is how to add to this scenario /dev/pps0 so that it adds more
> precision
>
>
>
> Regards,
>
> Andrei Volodin
>
> On Wed, Jun 24, 2020 at 2:49 AM Richard Cochran <richardcoch...@gmail.com>
> wrote:
>
>> On Tue, Jun 23, 2020 at 04:55:35PM +0000, Andrey Volodin wrote:
>> > Could you extend on the best way to add PPS input to linuxptp, please?
>>
>> There are different ways to use a PPS input. What are you trying to do?
>>
>> > does linuxptp support PPS input?
>>
>> Yes.
>>
>> Thanks,
>> Richard
>>
>
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