Re: [PATCH net-next v5 0/3] Add DAPU Telecom DAP8211R(I) Gigabit Ethernet PHY driver

On Tue, Aug 04, 2026 at 10:03:30AM +0300, Artem Shimko wrote:

Hi Andrew,

On Tue, Aug 4, 2026 at 5:32 AM Andrew Lunn [off-list ref] wrote:

quoted

Is this a random example, or what you are actually using?

This is actually the configuration we're using on our
hardware.

 phy-mode = "rgmii-rxid";                                                                                             
 phy-handle = <&phy1>;                                                                                                
 ...                                                                                                                  
                                                                                                                      
 mdio: mdio {                                                                                                         
   phy1: ethernet-phy@1 {                                                                                             
     ...                                                                                                              
     compatible = "ethernet-phy-id0008.011b";                                                                         
     rx-internal-delay-ps = <1050>;                                                                                   

That is a very odd setup, half the 2ns delay the RGMII standard asks
for? Do you have an explanation for this?

Have you verified the writing of the delays in the PHY register don't
have a 1 bit shift error?

  Andrew