TDA4VM: [TDA4] How to add new T1 phy chip driver for cpsw9g?

Dear Experts :

we design new ethernet T1 phy chip (Marvel 88Q2220 & TI DP83TC811)  for CPSW9G TSN switch on our customer TDA4 board, my question is :

1. Do I need add new T1 phy chip driver for EthFw?

2. If yes, I need to add new driver, how do I start to add new driver? do we have any reference driver code?

I have no idea.

pls give us any comment

Many Thanks

Gibbs