linux-kernel - Re: [PATCH net-next v7 2/4] dt-bindings: ethernet-phy: add MII-Lite phy interface type

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Message-ID: <175200933841.1032309.15245293992929519207.robh@kernel.org>
Date: Tue, 8 Jul 2025 16:15:39 -0500
From: "Rob Herring (Arm)" <robh@...nel.org>
To: Kamil Horák - 2N <kamilh@...s.com>
Cc: linux@...linux.org.uk, corbet@....net, linux-doc@...r.kernel.org,
	krzk+dt@...nel.org, bcm-kernel-feedback-list@...adcom.com,
	florian.fainelli@...adcom.com, hkallweit1@...il.com,
	pabeni@...hat.com, kuba@...nel.org, linux-kernel@...r.kernel.org,
	devicetree@...r.kernel.org, conor+dt@...nel.org,
	netdev@...r.kernel.org, andrew+netdev@...n.ch, horms@...nel.org,
	davem@...emloft.net, edumazet@...gle.com,
	Maxime Chevallier <maxime.chevallier@...tlin.com>, andrew@...n.ch
Subject: Re: [PATCH net-next v7 2/4] dt-bindings: ethernet-phy: add MII-Lite
 phy interface type


On Tue, 08 Jul 2025 11:01:38 +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 new interface type "mii-lite" to phy-connection-type enum.
> 
> Signed-off-by: Kamil Horák - 2N <kamilh@...s.com>
> Reviewed-by: Maxime Chevallier <maxime.chevallier@...tlin.com>
> Reviewed-by: Florian Fainelli <florian.fainelli@...adcom.com>
> ---
>  Documentation/devicetree/bindings/net/ethernet-controller.yaml | 1 +
>  1 file changed, 1 insertion(+)
> 

Acked-by: Rob Herring (Arm) <robh@...nel.org>