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Date:   Sun, 23 Jan 2022 11:33:04 +0300
From:   Arınç ÜNAL <>
To:     DENG Qingfang <>
Cc:     Luiz Angelo Daros de Luca <>,
        Matthias Brugger <>,
        John Crispin <>,
        Siddhant Gupta <>,
        Ilya Lipnitskiy <>,
        Sergio Paracuellos <>,
        Felix Fietkau <>,
        Sean Wang <>,
        Mark Lee <>,
        Russell King <>,
        Jakub Kicinski <>,
        David Miller <>,
        René van Dorst <>,
        "moderated list:ARM/Mediatek SoC support" 
        netdev <>,,
Subject: Re: MT7621 SoC Traffic Won't Flow on RGMII2 Bus/2nd GMAC

Hey Deng,

On 23/01/2022 09:51, DENG Qingfang wrote:
> Hi,
> Do you set the ethernet pinmux correctly?
> &ethernet {
>      pinctrl-names = "default";
>      pinctrl-0 = <&rgmii1_pins &rgmii2_pins &mdio_pins>;
> };

This fixed it! We did have &rgmii2_pins on the gmac1 node (it was 
originally on external_phy) so we never thought to investigate the 
pinctrl configuration further! Turns out &rgmii2_pins needs to be 
defined on the ethernet node instead.

I'll send a patch to address this on mt7621.dtsi.

You saved us a bunch of time, thank you very much!


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