Re: [PATCH net v3 1/4] net: phy: MII-Lite PHY interface mode
From: Florian Fainelli
Date: Mon Jun 30 2025 - 13:02:16 EST
On 6/30/25 04:30, Kamil Horák - 2N wrote:
Some Broadcom PHYs are capable to operate in simplified MII mode,
without TXER, RXER, CRS and COL signals as defined for the MII.
The MII-Lite mode can be used on most Ethernet controllers with full
MII interface by just leaving the input signals (RXER, CRS, COL)
inactive. The absence of COL signal makes half-duplex link modes
impossible but does not interfere with BroadR-Reach link modes on
Broadcom PHYs, because they are all full-duplex only.
Add MII-Lite interface mode, especially for Broadcom two-wire PHYs.
Signed-off-by: Kamil Horák - 2N <kamilh@xxxxxxxx>
Reviewed-by: Florian Fainelli <florian.fainelli@xxxxxxxxxxxx>
--
Florian