netdev - Re: riscv defconfig CONFIG_PM/macb/generic PHY regression in v5.18-rc1

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Date:   Tue, 5 Apr 2022 17:25:00 +0100
From:   Conor Dooley <mail@...chuod.ie>
To:     Andrew Lunn <andrew@...n.ch>, Conor.Dooley@...rochip.com
Cc:     palmer@...osinc.com, apatel@...tanamicro.com,
        netdev@...r.kernel.org, Nicolas.Ferre@...rochip.com,
        Claudiu.Beznea@...rochip.com, linux@...linux.org.uk,
        hkallweit1@...il.com, linux-riscv@...ts.infradead.org
Subject: Re: riscv defconfig CONFIG_PM/macb/generic PHY regression in
 v5.18-rc1

On 05/04/2022 16:04, Andrew Lunn wrote:
>> [ 2.818894] macb 20112000.ethernet eth0: PHY [20112000.ethernet-ffffffff:09] driver [Generic PHY] (irq=POLL)
>> [ 2.828915] macb 20112000.ethernet eth0: configuring for phy/sgmii link mode
>> [11.045411] macb 20112000.ethernet eth0: Link is Up - 1Gbps/Full - flow control off
>> [11.053247] IPv6: ADDRCONF(NETDEV_CHANGE): eth0: link becomes ready
> 
> You have a multi-part link. You need that the PHY reports the line
> side is up. Put some printk in genphy_update_link() and look at
> phydev->link. You also need that the SGMII link between the PHY and
> the SoC is up. That is a bit harder to see, but try adding #define
> DEBUG at the top of phylink.c and phy.c so you get additional debug
> prints for the state machines.

Sure, will give it a go tomorrow.

> 
>         Andrew
> 
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> linux-riscv mailing list
> linux-riscv@...ts.infradead.org
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