S32G GMAC not support 802.1AS
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Hi experts,
I noticed that S32G GMAC support 802.1AS. But when I tried to test gPTP on S32G GMAC, it failed.
The reason is that the timestamp got from the network card does not change. As you can see from the figure below:
Use my tool get PTP timestamp from GMAC network card every 5 seconds, but the getting timestamp does not change.
The Kernal Version is
And the PTP option is opened。
Is there anything I forgot to do which is necessary for 802.1AS? How can gPTP work correct on S32G GMAC?
Thanks,
Jin

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Hello, @AutocoreJin
We feel very sorry for the delay.
Seems the GMAC PTP is unfunctional, I have the following two suggestions for the issue:
- You could try the BSP39, there may be no issues on this version.
- If still using the old BSP, may reference the attached workaround patch.
Let me know if it helps.
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Can you please share the link of the BSP39? I can only see BSP38 on the "automotive software package manager".
Thank you in advance.
Kind Regards,
Jim

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Hi zhengxiang jin
Hope you re doing well
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Hi Tushar,
Thank you for your response!
My using BSP version is 36.
And I read the S32G2_LinuxBSP_36.0_User_Manual 1.pdf. I use ptp4l and try to do time sync but it still does not work.
As you can see, the offset is so huge and do not become smaller.
Do you have any idea about this problem

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Hi zhengxiang jin
Okay , I will regenerate issue and will update.
Best Regards ,
Tushar
