Re: [PATCH net-next v1 1/2] net: phy: realtek: use C45 for RTL8365MB-VC internal PHY MMD access

[Andrew Lunn]

On Mon, Aug 17, 2026 at 03:47:57PM +0200, Oleksij Rempel wrote:
> The RTL8365MB-VC PHYs are integrated into the switch and have no MMD
> registers of their own. What phylib accesses as MMD registers (EEE)
> actually lives in the switch's OCP registers; the realtek DSA driver maps
> those MMD requests onto OCP and exposes them over C45.
> 
> For a C22 PHY, phy_read_mmd()/phy_write_mmd() would use C22 indirect-MMD,
> which this hardware does not implement. Point .read_mmd/.write_mmd at
> genphy_{read,write}_mmd_c45() so phylib's MMD accesses go over C45 to the
> DSA driver's mapping instead.
> 
> Signed-off-by: Oleksij Rempel <o.rempel@xxxxxxxxxxxxxx>

Reviewed-by: Andrew Lunn <andrew@xxxxxxx>

    Andrew