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Linux/TMS320DM8148: cpsw in a switch mode

Part Number: TMS320DM8148

Tool/software: Linux

My custom board using two Atheros AR8035 RGMII for some specific application.

I am using kernel 2.6.37  from PSP 4.XX  with some modification. Both Gigabit ports work just fine.

we would like to config the cpsw as a switch mode. 

we have two boards one with Realtek phy and another with atheros AR8035 

it works fine with Realtek phy but with Atheros AR8035 we see lots of packet loss after 2nd  Board.

our setup is like below

DMCP Server -> First Board LAN1 -> First Board LAN2 -> Second board LAN1 -> Second Board LAN2 -> Thrid Board LAN1 ..........and so on

so this daisy chain kind of and we would like to have up to 10 board in one Daisy chain.

Since our PSP does nor have atheros Phy driver i have copied it from  github.com/.../atheros.c

any input what and where to look ?

Br,

KP