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Subject: Re: [PATCH] arm64: defconfig: Change CONFIG_AT803X_PHY from m to y
To:     Oliver Graute <oliver.graute@gmail.com>
Cc:     Peng Fan <peng.fan@nxp.com>, Anson Huang <anson.huang@nxp.com>,
        dl-linux-imx <linux-imx@nxp.com>,
        Linux ARM <linux-arm-kernel@lists.infradead.org>,
        LKML <linux-kernel@vger.kernel.org>,
        Florian Fainelli <f.fainelli@gmail.com>,
        Andrew Lunn <andrew@lunn.ch>,
        Russell King <rmk+kernel@armlinux.org.uk>,
        =?UTF-8?Q?Andr=c3=a9_Draszik?= <git@andred.net>,
        Heiner Kallweit <hkallweit1@gmail.com>
References: <1572848275-30941-1-git-send-email-peng.fan@nxp.com>
 <20191126145450.GB5108@optiplex>
From:   Marc Gonzalez <marc.w.gonzalez@free.fr>
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Date:   Wed, 27 Nov 2019 09:47:37 +0100
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On 26/11/2019 15:54, Oliver Graute wrote:

> this patch broke my imx8qm nfs setup. With the generic phy driver my
> board is booting fine. But with the AT803X_PHY=y enabled  I'm running
> into the following phy issue. So on my side it looks inverse as on
> yours. What is the best proposal to fix this?
> 
> [    5.550442] fec 5b040000.ethernet eth0: Link is Up - 1Gbps/Full - flow control off
> [    5.573206] Sending DHCP requests ...... timed out!
> [   95.339702] IP-Config: Retrying forever (NFS root)...
> [   95.348873] Atheros 8035 ethernet 5b040000.ethernet-1:06: attached PHY driver [Atheros 8035 ethernet] (mii_bus:phy_addr=5b040000.ethernet-1:06, irq=POLL)
> [   99.438443] fec 5b040000.ethernet eth0: Link is Up - 1Gbps/Full - flow control off
> [   99.461206] Sending DHCP requests ...... timed out!

Which DTS are you using?

I bet one dollar that 6d4cd041f0af triggered a latent bug in the DTS.

Regards.