DP83TG720R-Q1: How to use DP83TG720R-Q1 which is connected to RGMII5 of TDA4VM?

Hello Hui,

Can you please share some further details? Is PHY not getting identified? Is there a data communication issue?

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Regards,

Vikram

Thanks for your reply.

MDIO communication between TDA4 and PHY(DP83TG720R) is OK now, TDA4 can read PHY registers. But there may be a problem with RGMII5 communication  or something else, TDA4 can not "ping" successfully with PC using a converter box.

We don't know if there is a problem with PIN MUX setting or the PHY driver code. Maybe there is something wrong with PIN MUX setting, because the PINs of RGMII5 are used as QSGMII function before, I don't know if we have changed them correctly.

We have read these links below and done what they say, but our board still can't ping successfully with PC using a converter box.

https://e2e.ti.com/support/processors-group/processors/f/processors-forum/906169/tda4vm-tda4vm-ethernet-switch-cpsw-9g-configurations

https://software-dl.ti.com/jacinto7/esd/processor-sdk-rtos-jacinto7/latest/exports/docs/pdk_jacinto_08_00_00_37/docs/apiguide/j721e/html/enetphy_guide_top.html

https://e2e.ti.com/support/processors-group/processors/f/processors-forum/1030243/faq-dra821u-dra829-guide-to-do-board-specific-modifications-for-cpsw-5g-9g

https://software-dl.ti.com/jacinto7/esd/processor-sdk-rtos-jacinto7/latest/exports/docs/psdk_rtos/docs/user_guide/developer_notes_ethfw.html

Our problem is like this link below.

https://e2e.ti.com/support/processors-group/processors/f/processors-forum/1039776/tda4vm-cpsw9g-rgmii5-bcm89881-config-issue

How do we verify that the PIN MUX of RGMII5 is correct? Is there RGMII5 self test function inside TDA4VM?

Does the INT pin of DP83TG720R have to be used? I know that WAKE and INH pins can be not used. I wonder if INT can be not used.

Hello Hui,

Can you please post this thread on processor's E2E? At PHY side we are not aware of the required processor's configuration.

I have updated you about the INT signal on separate e2e thread.

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Regards,

Vikram

OK, Thanks.

Thanks for your reply.

This(RGMII (TX and RX Shift Mode)) is the usual mode, right?

Hello Hui,

If MAC is in the Rgmii TX and RX align mode, then PHY should be in TX and RX shift mode.

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Regards,

Vikram