DRA821U: How to config the RSMII aligned more of Shift mode for DP83CT811 on the DRA81U CPSW side?

Rio Chan

Part Number: DRA821U

If MAC’s Configuration is :	Required PHY’s configuration	Required PHY’s programming
Rgmii Align Mode on TX side	Rgmii Shift Mode on TX side	Reg<x17>[11] = 1
Rgmii Align Mode on RX side	Rgmii Shift Mode on RX side	Reg<x17>[12] = 1
Rgmii Shift Mode on TX side	Rgmii Align Mode on TX side	Reg<x17>[11] = 0
Rgmii Shift Mode on RX side	Rgmii Align Mode on RX side	Reg<x17>[12] = 0

Hi.

According the TI Phy 811 AE saying, the MAC side needs to set the Align mode or Shift mode, may you tell us where is the code / function to set the DRA821U CPSW for those 2 modes?

BR Rio

over 3 years ago

0 Vineet Roy over 3 years ago

TI__Mastermind 37435 points

Hi Rio,

Can you ask customer to check this ?

I am not aware of any other register setting

Regards

Vineet

0 Rio Chan over 3 years ago in reply to Vineet Roy

TI__Genius 14655 points

Hi Roy:

THanks, But where to config this reg?

Which file which API in the RTOS code we shall apply this reg?

BR Rio

0 Vineet Roy over 3 years ago in reply to Rio Chan

TI__Mastermind 37435 points

Hi Rio,

Please search for RGMII_ID_NODELAY in pdk/packages/ti/drv/enet/examples/utils/enet_board_am65xevm.c . There is an example on how to set this register bitfield.

You can add this code in EthApp_initEthFw()

Regards

Vineet

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DRA821U: How to config the RSMII aligned more of Shift mode for DP83CT811 on the DRA81U CPSW side?