linux-kernel - Re: [PATCH] lan743x: Added fixed link and RGMII support / debugging

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Message-Id: <C69EECC3-5701-46FF-84E4-4F0AFDB52809@berg-solutions.de>
Date:   Wed, 3 Jun 2020 20:31:06 +0200
From:   Roelof Berg <rberg@...g-solutions.de>
To:     Andrew Lunn <andrew@...n.ch>
Cc:     David Miller <davem@...emloft.net>,
        Bryan Whitehead <bryan.whitehead@...rochip.com>,
        Microchip Linux Driver Support <UNGLinuxDriver@...rochip.com>,
        netdev@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] lan743x: Added fixed link and RGMII support / debugging

I’m testing with Microchip Lan7430, which is an integrated circuit that contains MAC and PHY in one package. With the release kernel the hardware works fine, so the overall configuration is ok (jumpers).

I will verify wether the effective RGMII and delay settings, you mention, are equal in both driver versions.

>> Ok, let's proceed :) 
> What PHY is being used?
> Is it using RGMII?
> 
> If it looks like the PHY and the MAC are happy, just that frames are
> not being transferred between them, it could be RGMII delays.
> 
>    Andrew
>