Today's Topics:

1. MPC8541CDS board PHY interface (M Ravi Prakash Reddy)

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Message: 1 Date: Tue, 26 Feb 2008 15:39:05 +0530 (IST) From: M Ravi Prakash Reddy mrp_crl@yahoo.co.in Subject: [U-Boot-Users] MPC8541CDS board PHY interface To: u-boot-users@lists.sourceforge.net Message-ID: 753173.56427.qm@web8911.mail.in.yahoo.com Content-Type: text/plain; charset="utf-8"

Hi,

We have designed a MPC8541 based card taking MPC8541CDS card as reference . In our card we have provided marvell Gigabit Dual PHY chip "MV88E1121" on the Tsec RGMII interface. We are using U-Boot as firmware . We have changed the value of first two elements of structure "phy_info " from 0x01410c6 & "Marvell 88E1011S" to 0x01410cb & "Marvell 88E1121S"respectively in in tsec.c file. These changes we have made as per the PHY identifier 1 & PHY identifier 2 from the 88E1121 datasheet . With these changes U-boot is able to recognize our Phy chip .

As per MPC8555ERM.pdf document TX_CLK for the PHY will be supplied by the powerPC in RGMII mode . In our case we are not getting this clock. We are not able to ping our board. we want to know what all changes are required in the U-Boot code to initialize the PowerPC for RGMII operation.

You need to set RGMII (1000Mbit) option in MarvelPHY's priv regs. Chk the Marvell phy's manual

:.:.:.:Manish Jaggi:.:.:.: