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DM814x/DM812x--How to enable rx flow control and test the function?

yuanming chen
Prodigy 30 points

I have enable the tx flow control as follow:

1. set mac_control register's TX_FLOW_EN, FULL_DUPLEX

2. set phy antoneg mode,ANAR register's PAUSE and ASYM PAUSE bit

According test, MAC can receive the pause frame kowned by statisic reg .

NOW the problem is I set set mac_control register's RX_FLOW_EN. By statisic reg the send pause frame always zero.

How to  enable rx flow control and test the function?