netdev - Re: [PATCH net-next 4/6] net: stmmac: rk: rk3528: gmac0 only supports RMII

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Message-ID: <bc094312-8671-432a-ac16-1b1a4d052efd@bootlin.com>
Date: Wed, 4 Feb 2026 10:43:59 +0100
From: Maxime Chevallier <maxime.chevallier@...tlin.com>
To: "Russell King (Oracle)" <rmk+kernel@...linux.org.uk>,
 Andrew Lunn <andrew@...n.ch>
Cc: Alexandre Torgue <alexandre.torgue@...s.st.com>,
 Andrew Lunn <andrew+netdev@...n.ch>, "David S. Miller"
 <davem@...emloft.net>, Eric Dumazet <edumazet@...gle.com>,
 Heiko Stuebner <heiko@...ech.de>, Jakub Kicinski <kuba@...nel.org>,
 linux-arm-kernel@...ts.infradead.org, linux-rockchip@...ts.infradead.org,
 linux-stm32@...md-mailman.stormreply.com, netdev@...r.kernel.org,
 Paolo Abeni <pabeni@...hat.com>
Subject: Re: [PATCH net-next 4/6] net: stmmac: rk: rk3528: gmac0 only supports
 RMII

On 04/02/2026 10:14, Russell King (Oracle) wrote:
> RK3528 gmac0 dtsi contains:
> 
>                 gmac0: ethernet@...d0000 {
>                         phy-handle = <&rmii0_phy>;
>                         phy-mode = "rmii";
> 
>                         mdio0: mdio {
>                                 rmii0_phy: ethernet-phy@2 {
>                                         phy-is-integrated;
>                                 };
>                         };
>                 };
> 
> This follows the same pattern as rk3328, where this gmac instance
> only supports RMII. Disable RGMII in phylink's supported_interfaces
> mask for this gmac instance.
> 
> Signed-off-by: Russell King (Oracle) <rmk+kernel@...linux.org.uk>

Reviewed-by: Maxime Chevallier <maxime.chevallier@...tlin.com>

Maxime