topic Re: LS1028ARDB IEEE1588 Test in Layerscape

LS1028ARDB IEEE1588 Test

NanWang — Mon, 16 Oct 2023 01:45:28 GMT

Hi, NXP guys

I want to test IEEE1588 on LS1028ARDB. I can only find documentation about "Quick Start for IEEE 1588" and use linuxptp software for IEEE1588. But I don't know how to use J11, J12 and J13 for IEEE1588 on LS1028ARDB (PCB board). I don't find any documentation for LS1028ARDB 1588 1PPS test. Can you provide any good suggestions for us? Thank you very much.

BRs.

Re: LS1028ARDB IEEE1588 Test

yipingwang — Tue, 24 Oct 2023 05:16:10 GMT

Please refer to section "8.7.7 Quick start for external signals" in LSDK 21.08 user manual.

Re: LS1028ARDB IEEE1588 Test

NanWang — Tue, 31 Oct 2023 09:50:26 GMT

Hi,

I have executed the following commands on LS1028ARDB:

ethtool -T eno0

ptp4l -i eno0 -m &

echo 1 > /sys/class/ptp/ptp0/pps_enable

cat /sys/class/pps/pps0/assert # check latest timestamp of PPS event

But I can't get PPS waveform on digital oscilloscope through J12 (IEEE1588) on LS1028ARDB. In other words, there is nothing happened on oscilloscope. Is there any good suggestions? Thanks.

By the way, I just want to check PPS waveform on digital oscilloscope through J12.

BRs.

Re: LS1028ARDB IEEE1588 Test

yipingwang — Wed, 01 Nov 2023 09:53:44 GMT

You need to modify the dts according to Documentation/devicetree/bindings/ptp/ptp-qoriq.txt.