netdev - Re: [PATCH net v2 1/4] net: phy: MII-Lite PHY interface mode

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Message-ID: <bc1d0fba-f81f-4524-aabc-65e72b448eb1@axis.com>
Date: Fri, 27 Jun 2025 16:21:57 +0200
From: Kamil Horák (2N) <kamilh@...s.com>
To: "Russell King (Oracle)" <linux@...linux.org.uk>
Cc: netdev <netdev@...r.kernel.org>
Subject: Re: [PATCH net v2 1/4] net: phy: MII-Lite PHY interface mode



On 6/27/25 15:06, Russell King (Oracle) wrote:
> On Fri, Jun 27, 2025 at 01:23:03PM +0200, 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@...s.com>
> 
> Very sorry, but in the last review, I missed that you aren't updating
> the description of interfaces in Documentation/networking/phy.rst
> 
> Please see the section "PHY interface modes".
> 
OK I see it.
So I am supposed to put a paragraph for MII-Lite containing the 
information as found in this commit message?

As for the patch division, this may be in the one introducing the phy 
mode itself or there must be separate patch like it is required for 
dt-bindings?

> Thanks.
> 
Kamil