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SubjectRE: [PATCH v5 2/5] net: macb: add support for sgmii MAC-PHY interface
>If you are interested in supporting SFPs as well, then using phylink
>makes sense, but you need to implement your phylink conversion properly,
>and that means supporting dynamic switching of the PHY interface mode,
>and allowing phylink to determine whether a PHY interface mode is
>supported or not.
Yes, we want to support SFP+.
10G is tested in fixed mode on SFP+.
Based on your suggestions, dynamic switching of PHY interface is handled.
And check in probe is for hardware support for user selected interface,
which can be moved to validate callback but then supported mask will be empty.

>However, with what you've indicated through our discussion, your MAC
>does not support BASE-X modes, nor does it support 10GBASE-R, both of
>which are required for direct connection of SFP or SFP+ modules.
1000Base-X and 10GBASE-R supported by separate PCS.

Parshuram Thombare

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