TDA4VM: Questions related to Ethernet communication in Jacinto784s4

Hi,

Matthias said:

I have some concerns regarding the internet communication in the J784s4_evm board.

In the documentation, it's written that Jumbo frame isn't supported. For what reason ? Is it due to hardware or software issues ?

Yes, Internal H/W FIFO size of Ethernet Ports is limited So, can't support Jumbo frames.

Matthias said:

I have a second question about the switch CPSW_9g in the soc. What is it bandwith ? Can we connect all the C7x cores and A72's OS without any issue ?

CPSW9G can handle two Ports at 10Gbps (Port-1, Port-2) in USXGMII/XFI and remaining all ports at 2.5Gbps in XAUI interface.
H/W wise we can access CPSW9G from C7X cores, but Zero support for this from TI.

We have CPSW9G application in TI SDK as Ethernet Firmware (Server) on R5F MCU2_0 + Virtual clients (A72, R5F).
For more details please refer to Ethernet Firmware User Guide.

We do have support for A72 Native Linux Driver for CPSW9G, where only A72 can use CPSW no other cores as in Ethernet Firmware Use case.
Please refer to Linux SDK Documentation for usage of Native Linux Driver.

Note:
You have to enable either of one from above for CPSW9G not both at the same time.


Best Regards,
Sudheer