[SI-LIST] Re: RGMII to SGMII conversion
- From: "Ravi Kiran" <kiranr@xxxxxxxxxx>
- To: "Sankar K" <Sankar.Karuppannan@xxxxxxxxxxx>, "si-list@xxxxxxxxxxxxx" <si-list@xxxxxxxxxxxxx>
- Date: Wed, 16 Sep 2009 11:51:16 +0530
Hi Sankar.K,
I assume you are not able to TX and RX packets on Line side. And you are doing
HW board bring up.
1) If you are able to see the link and blink of TX/RX LED it means the PHY is
working fine on Ethernet line side (differential signal). The PHY LED would
still glow if (a) There is no MAC(uP, Switch) (b) PHY is not configured. So
Link is not the only parameter to see.
I would trey the following.
2) Is the MDC/MDIO interface working fine ? If not I will make the control path
up first. Before doing to data path.
3) Generally PHY such as this will have Loop back on Ethernet line side and
RGMII/SGMII interface side. You can try enabling those things.
4) MAC section in switch/CPU will generally have receive/transmit frame
coulters. Plz check the counters if there are incrementing.
5) I suggest one needs to take the dump of PHY and Switch on serail port to
debug such problem. Because one really dont know what is configured in them (I
think you might be having more than 3K registers). May bugs are solved taking
the help of dump.
6) In 88E1145 plz check if you really can configure each MAC interface
individually to RGMII and SGMII. You might have done this but just a thought.
7) Also see until which block in the Switch/PHY the data is going.
8) One check the pull up and pull down that are connected to transformer.
I think we need more information on this. Plz let me know if you have already
solved this bug.
Regards,
Ravi Kiran
http://www.linkedin.com/in/adusumilli123
>>> Sankar K <Sankar.Karuppannan@xxxxxxxxxxx> 9/13/2009 12:53 PM >>>
Hi All,
We are using 88E1145 Marvell PHY in our project. PHY RGMII port to CPU and
SGMII port is connected to Switch.
We are able to see the linkup and not able to transfer the data packet. Please
any one help on this.
Thanks and Regards,
Sankar.K
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