Re: [PATCH net-next v1 1/3] net: phy: micrel: add MDI/MDI-X control support for KSZ9477 switch-integrated PHYs

[Andrew Lunn]

On Tue, Jun 10, 2025 at 11:13:52AM +0200, Oleksij Rempel wrote:
> Add MDI/MDI-X configuration support for PHYs integrated in the KSZ9477
> family of Ethernet switches.
> 
> All MDI/MDI-X configuration modes are supported:
>   - Automatic MDI/MDI-X (ETH_TP_MDI_AUTO)
>   - Forced MDI (ETH_TP_MDI)
>   - Forced MDI-X (ETH_TP_MDI_X)
> 
> However, when operating in automatic mode, the PHY does not expose the
> resolved crossover status (i.e., whether MDI or MDI-X is active).
> Therefore, in auto mode, the driver reports ETH_TP_MDI_INVALID as
> the current status.

I assume you also considered returning ETH_TP_MDI_AUTO? What makes
INVALID better than AUTO?

	Andrew