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 - how shall I run the commands above to use the pps0? with linuxptp? 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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