T1040 : SFP on serdes

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T1040 : SFP on serdes

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manjularajesh
Contributor II

On T1040 based board, we are using serdes protocol -0x69 ;

We have two  sgmii interfaces on board:

X1 on Lane1-FMmac3

X1 on Lane6-FMmac4

the above sgmii links are connected  directly to SFPs without any PHYs.

The SGMII interfaces have been assigned PHY-ADDRESSES as 0x0c, 0x0d respectively.

Note :In RDB, realtek-RTL8211DN phy is used to interface SGMII link on X1 on Lane1-FM-

mac3

In section 31.5.4 of reference manual,It is mentioned that:

The SGMII MDIO register space is selected when the associated

SGMIInCR1[MDEV_PORT] matches the Ethernet MAC PHY address

(MDIO_CTL[PHY_ADDR]).

when I referred to u-boot code I could not find writing to SGMIInCR1 registers the

values what I observed in register-log for Serdes_SGMIICCR1 and Serdes_SGMIIDCR1 is

0x000008bf.

I am trying to ping over SFPs not happening. What more has to initialized in u-boot/

linux to bring up these links.

thanks in advance

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vidyasagar
Contributor III

Dear Rajesh,

Do SGMII ports work ?

Thanks,

Amit

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