On Thu, Sep 05, 2024 at 07:17:03PM +0800, Junhao Xie wrote:

On 2024/9/5 01:25, Andrew Lunn wrote:

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+&gmac1 {

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This has been discussed a few times. You should be using phy-mode
rgmii-id.

After I changed phy-mode to rgmii-id, it seemed to work,
but it didn't transmit any data.
Maybe I made a mistake or should I continue to use phy-mode rgmii?

How did you change the rx_delay and tx_delay?

In general, we want the PHY to add the delay, not the MAC. Most boards
in Linux do that. But boards using the motocomm PHY have got into a
cargo cult copy/paste of using the MAC to add the delays.

	Andrew