linux-kernel - Re: [PATCH net-next v7 3/4] net: phy: bcm5481x: MII-Lite activation

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Message-ID: <aGzfCHlHXEpq9-Gi@shell.armlinux.org.uk>
Date: Tue, 8 Jul 2025 10:04:08 +0100
From: "Russell King (Oracle)" <linux@...linux.org.uk>
To: Kamil Horák - 2N <kamilh@...s.com>
Cc: florian.fainelli@...adcom.com, bcm-kernel-feedback-list@...adcom.com,
	andrew@...n.ch, hkallweit1@...il.com, davem@...emloft.net,
	edumazet@...gle.com, kuba@...nel.org, pabeni@...hat.com,
	krzk+dt@...nel.org, conor+dt@...nel.org, netdev@...r.kernel.org,
	devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
	robh@...nel.org, andrew+netdev@...n.ch, horms@...nel.org,
	corbet@....net, linux-doc@...r.kernel.org
Subject: Re: [PATCH net-next v7 3/4] net: phy: bcm5481x: MII-Lite activation

On Tue, Jul 08, 2025 at 11:01:39AM +0200, Kamil Horák - 2N wrote:
> Broadcom PHYs featuring the BroadR-Reach two-wire link mode are usually
> capable to operate in simplified MII mode, without TXER, RXER, CRS and
> COL signals as defined for the MII. The absence of COL signal makes
> half-duplex link modes impossible, however, the BroadR-Reach modes are
> all full-duplex only.
> Depending on the IC encapsulation, there exist MII-Lite-only PHYs such
> as bcm54811 in MLP. The PHY itself is hardware-strapped to select among
> multiple RGMII and MII-Lite modes, but the MII-Lite mode must be also
> activated by software.
> 
> Add MII-Lite activation for bcm5481x PHYs.
> 
> Signed-off-by: Kamil Horák - 2N <kamilh@...s.com>
> Reviewed-by: Florian Fainelli <florian.fainelli@...adcom.com>

Reviewed-by: Russell King (Oracle) <rmk+kernel@...linux.org.uk>

Thanks!

-- 
RMK's Patch system: https://www.armlinux.org.uk/developer/patches/
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