ppisa commented on PR #16911:
URL: https://github.com/apache/nuttx/pull/16911#issuecomment-3232813793

   The Linux kernel style for MMD PHY registers access is proposed in 
alternative pull request #16926 which superseded this request if approved. 
Combining of Clause 22 and Clause 45 accesses in the single IOCTL is a little 
more readable but does not resources for another and NuttX specific IOCTL.
   
   There should be followup discussion how to report which MACs are acapable of 
C45 accesses to PHYs. All controllers with MDIO IOCTLs support should be 
revised to not attempt interpret incorrect way C45 as C22 and vice versa. 
Current state is that there are even no checks that classical MDIO addresses 
and registers are in range. But it should be discussed the first and is mostly 
another topic than MMD and PLCA for T1S.


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