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TDA4VM: how to enable the mac loopback function of cpsw

jeffreysundts
Intellectual 460 points

Part Number: TDA4VM

Hi all,

I have refered to RTOS\pdk_jacinto_07_01_05_14\packages\ti\drv\enet\src\mod\cpsw_macport.c  (psdk 720 customed board)

CpswMacPort_enableLoopback(); and I set loopback for macpot 6.
 
As show in firgure above, the data packages can be transmitted from port 6 but can not be received by any port of cpsw, Also I have seen that no data packages can be received by phy either.
So Is that the right way to enable mac loopbcak and how to verify the loopback mode works.
with regards