Thanks, Prabhuraj BlackPepper Technologies. So can we continue with IEEE hardware timestamp feature of AM processor or it is better to use DP as external phy with hardware timestamping. The newly created question will be automatically linked to this question. Hi Mitesh, The DP link shared by you mentions linux kernel supported between 4. Follow the steps below:

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This thread has been locked. The register BMCR’s bit 12 is the place where we can do something to disable the auto negotiation function, and it says: Mentions Tags More Cancel.

Hi Junhu, I think your question is first about the register setting to disable the auto negotiation, are you able to consult the DP vendor for if you can do this and how to do this?

You mentioned the 3.

But, there are few doubts for proceeding further. Mentions Tags More Cancel. TI is a global semiconductor design and manufacturing company. Please make sure you read the forum guidelines first.


I have tried as what you adviced, and it’s working correctly. We are glad that we were able to resolve this issue, and will now proceed to close this thread.

Do you have another question? In reply to Mitesh Hiran: Ask a related question What is a related question?

Linux/DP83640: Interfacing DP83640 with AM335x for PTP Grandmaster operation

Thanks, Prabhuraj BlackPepper Technologies. Ask a related question Ask a new question. I have attached the log in my previous reply Thanks. Now, we want to create PTP master.

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Follow the steps below: In reply to Yordan Kovachev:. This way time stamping will continue correctly after an overflow. Go to Support forums. The same Linux upstream change may have been applied to various maintained Linux releases and you can find all Linux releases containing changes from upstream 81e8f2e. In reply to prabhuraj tavag Currently TI does not have a recommendation on which path to proceed concerning the resolution targets you are trying to acheive.


Linux source code: drivers/net/phy/dpc (v) – Bootlin

If you have problem implementing this reg setting by software we can help. No license, either express or implied, by estoppel or otherwise, is granted by TI. If you have further questions related to this thread, you may click “Ask a related question” below. Linux Distribution for Blackfin.

net: dp Fix tx timestamp overflow handling. [Linux ] – Linux Kernels

Trademarks Privacy Policy Terms of Use. The code I have changed looks like this: Could you please help me with this. I will look into and try it, and will let you know the result. Use of the information on this site may require a license from a third party, or a license from TI.