AM2432: EtherCAT using DP83867

Tool/software:

Hello,

I'm working on getting EtherCAT operational on a custom board that utilizes the DP83867 PHY. I'm using the beckhoff_slave example. I am using the Ind comms SDK version 11 with AM2432 ALV

I've successfully used the DP83867 driver with an AM64x board previously, so I have some familiarity with it.

Here's what I've done and observed on the new board:

• Custom Reset Sequence: I've implemented a custom reset sequence tailored to my board's pin configuration.
• PHY Mode: I've configured the PHY to MII mode by disabling RGMII. This was done by clearing bit 7 of the RGMII_CTRL register (0x0032).
• Sysconfig Settings: In Sysconfig, I've set up the correct pinning and strapped PHY addresses. I've also configured link_polarity to ACTIVE_HIGH (in tiescsoc.c) for MLink fast detection, which I verified by checking the MDIO_LINK_REGS status.
• PHYSTS Register: After auto negotiation completes, reading the PHYSTS register returns 0x7F02.
• ESC DL Status: With the main device connected to port 0, the ESC DL status register shows 0x5611.
• Counters at 0xE00: When scanning for the sub-device, I can see that the counters at address 0xE00 are incrementing with the correct number of messages.
• TX_CLK Signal: I've verified that the TX_CLK signal is being generated.

The Problem:

Despite the above, the Work Counter (WKC) is not incrementing, which is causing the scanning process to fail.

Has anyone encountered a similar issue or have suggestions on what I should investigate next? Any insights would be greatly appreciated!

Thanks,

Saptarshi