On Thu, Sep 25, 2025 at 10:52:22PM +0200, Josef Raschen wrote:

Currently, for a LAN8870 phy, before link up, a call to ethtool to set
master-slave fails with 'operation not supported'. Reason: speed, duplex
and master/slave are not properly initialized.

This change sets proper initial states for speed and duplex and publishes
master-slave states. A default link up for speed 1000, full duplex and
slave mode then works without having to call ethtool.

Hi Josef

What you are missing from the commit message is an explanation why the
LAN8870 is special, it needs to do something no other PHY does. Is
there something broken with this PHY? Some register not following
802.3?

    Andrew

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pw-bot: cr