LS1046A SGMII PHY connection

[kristof_tunner]

We have a custom board set up with the a LS1046a processor. The serdes control section of the rcw is configured as 0x1333 and the serdes1 port B is connected to the SGMII interface of a Marwell 88E1512 Phy chip. In u-boot i can see the Phy at adress 0x3 and reading the registers i can see that the link on the copper interface is up, but the SGMII interface is down according to the PHY registers. The phy is configured as sgmii->copper.

I used the same code as on the ls1046ardb devboard in /board/freescale/ls1046ardb/eth.c but not working. Have i missed some defines from the headers or some initialization needs to be done as well on the MAC side?

Thanks in advance!

[kristof_tunner]

Dear Platon,

Thanks for your answer!

I have another PHY connected to the serdes1 block lane D, which I am trying to use in SGMII->copper mode. I configured the rcw[128-143] as 3333 so that the D lane is configured as SGMII. I use the ls1046ardb reference design and I only changed in the dts the fman part see in the attached file. So far ethtool fm1-mac9 command says the following, but I cant ping through the interface. Is it something that I miss from the device tree?

ethtool output

Thanks in advance!

Best regards,

Kristóf

[bpe · Accepted solution]

Well, the code under board/freescale/ls1046ardb/ has been validated on LS1046A-RDB
only. It may not fit your design, although it is believed to be a good starting
point. The suggestions are:

1. Use CodeWarior QCVS SerDes tool to validate your SerDes connection:

   https://docs.nxp.com/bundle/GUID-062F363E-637F-47AB-8C1A-84C46F4167DA/page/GUID-2EB267F7-9529-466E-9...
   
2. Check  the link status  in SGMII_SR[AN_COMP, LINK_STAT]

3. Check the link partner response in SGMII_LP_DEV_ABIL_SGMII.

4. Consult at the PHY manufacturer/documentation.

Have a great day,
Platon

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