AW: [PATCH net] net: mdio: realtek-rtl9300: fix RTL931x C22 extended page selection

[Markus Stockhausen]

> Von: Jonas Jelonek <jonas@xxxxxxxxxxxxxxx> 
> Gesendet: Freitag, 18. September 2026 23:20
> Betreff: [PATCH net] net: mdio: realtek-rtl9300: fix RTL931x C22 extended
page selection
>
> The RTL931x indirect access engine has a separate nine-bit extended page
> field. The driver leaves it at zero, and otto_emdio_run_cmd() therefore
> programs extended page zero for every Clause 22 transaction. This
> overrides page selection made through PHY register 30, causing accesses
> to private PHY pages to hit extended page zero instead.
>
> Set the field to its 0x1ff "do not change" value for RTL931x Clause 22
> reads and writes. This preserves extended page selection made through
> PHY register 30 and restores access to its private register pages.
>
> Fixes: 5ebdcac59aff ("net: mdio: realtek-rtl9300: Add support for
RTL931x")
> Signed-off-by: Jonas Jelonek <jonas@xxxxxxxxxxxxxxx>

Acked-by: Markus Stockhausen <markus.stockhausen@xxxxxx>