linux-kernel - Re: [PATCH v2 2/3] arm64: dts: ti: k3-am642-evm: add ICSSG1 Ethernet support

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Date:   Wed, 13 Dec 2023 14:26:42 +0100
From:   Andrew Lunn <andrew@...n.ch>
To:     MD Danish Anwar <danishanwar@...com>
Cc:     Vignesh Raghavendra <vigneshr@...com>, Nishanth Menon <nm@...com>,
        Conor Dooley <conor+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Rob Herring <robh+dt@...nel.org>, linux-kernel@...r.kernel.org,
        devicetree@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        Tero Kristo <kristo@...nel.org>, srk@...com,
        r-gunasekaran@...com, afd@...com
Subject: Re: [PATCH v2 2/3] arm64: dts: ti: k3-am642-evm: add ICSSG1 Ethernet
 support

On Tue, Dec 12, 2023 at 10:28:31PM +0530, MD Danish Anwar wrote:
> ICSSG1 provides dual Gigabit Ethernet support with proper FW loaded.
> 
> The ICSSG1 MII0 (RGMII1) has DP83869 PHY attached to it. The ICSSG1 shares
> MII1 (RGMII2) PHY DP83869 with CPSW3g and it's assigned by default to
> CPSW3g. The MDIO access to MII1 (RGMII2) PHY DP83869 is controlled by MDIO
> bus switch and also assigned to CPSW3g. Therefore the ICSSG1 MII1 (RGMII2)
> port is kept disable and ICSSG1 is enabled in single MAC mode by
> default.

FYI

I want to review all this MII muxing, but it won't be today.

  Andrew