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Original question:

MMWCAS-DSP-EVM: Unable to mount SSD when A15 run on Linux .

MMWCAS-DSP-EVM: Unable to Achieve PTP Time Synchronization with Host

Lei Zhang
Prodigy 80 points
Part Number: MMWCAS-DSP-EVM

Tool/software:

I have obtained ptp4l through cross-compilation, moved it to the MMWCAS-DSP-EVM, and the version is 1.92. 

However,I am unable to achieve PTP time synchronization with the host.

1.Host Network  Card Support for PTP

2.Test the Network Connection Between the Host and the MMWCAS-DSP-EVM

Edit the MMWCAS-DSP-EVM eth0 IP address to 192.168.33.180.

I am unable to establish a network connection between the host  and the slave .

3.The MMWCAS-DSP-EVM Side run：ptp4l -E -4 -H -i eth0 -s -l 7 -m -q -p /dev/ptp0


4.The Host side run：sudo ptp4l -4 -H -i eno2 -m -p /dev/ptp0



  • 0
    TI__Mastermind 32295 points

    Hello Lei,

    Unfortunately the SDK for this kit is very old and no longer supported and is offered in an as-is state. In this case, ptp was never supported on these releases so any efforts on trying to get this to work will lie solely on the customer.

    Please look for support within the open source community. 

    Best,

    -Josue

  • 0 in reply to Josue Zamitiz-Ayala
    Prodigy 80 points

    Hello Josue

    Thank you for your response. My current issue is that the CPSW eth0 on the MMWCAS-DSP-EVM running Linux cannot communicate with the host over the network. To configure a static IP, I modified /etc/systemd/network/10-eth.network, and I ensure that the IP address of eth0 on the MMWCAS-DSP-EVM is set to 192.168.33.180 after each reboot. However, I am unable to ping the host. Could you provide me with some suggestions?

  • 0 in reply to Lei Zhang
    TI__Mastermind 32295 points

    Lei,

    If connected to the internet are you able to ping anyone? e.g. google.com or here internally we just ping  ti.com.

    If connected to the router, are you able to log on to the router and observe the device being assigned an address?

    -Josue

  • 0 in reply to Josue Zamitiz-Ayala
    Prodigy 80 points

    Hi Josue

    I don't have a router or switch. I just want to connect the MMWCAS-DSP-EVM to a PC using an Ethernet cable so that they can communicate within a local network. I have confirmed that the IP addresses are set within the same subnet and the physical network connection is fine, but I still cannot ping the PC.

    Best,

    Lei