netdev - Re: [PATCH net-next v2 3/3] net: phy: marvell10g: place in powersave mode at probe

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Date:   Fri, 10 Apr 2020 17:18:41 +0200
From:   Matteo Croce <mcroce@...hat.com>
To:     Russell King - ARM Linux admin <linux@...linux.org.uk>
Cc:     Andrew Lunn <andrew@...n.ch>,
        Florian Fainelli <f.fainelli@...il.com>,
        Heiner Kallweit <hkallweit1@...il.com>,
        Antoine Tenart <antoine.tenart@...tlin.com>,
        "David S. Miller" <davem@...emloft.net>,
        netdev <netdev@...r.kernel.org>,
        Luka Perkov <luka.perkov@...tura.hr>
Subject: Re: [PATCH net-next v2 3/3] net: phy: marvell10g: place in powersave
 mode at probe

On Fri, Apr 10, 2020 at 5:16 PM Russell King - ARM Linux admin
<linux@...linux.org.uk> wrote:
>
> On Fri, Apr 10, 2020 at 04:59:44PM +0200, Matteo Croce wrote:
> > On Fri, Apr 10, 2020 at 4:50 PM Russell King - ARM Linux admin
> > <linux@...linux.org.uk> wrote:
> > >
> > > On Fri, Apr 10, 2020 at 04:39:48PM +0200, Matteo Croce wrote:
> > # ./mii-diag eth0 -p 32769
> > Using the specified MII PHY index 32769.
> > Basic registers of MII PHY #32769:  2040 0082 002b 09ab 0071 009a c000 0009.
> >  Basic mode control register 0x2040: Auto-negotiation disabled, with
> >  Speed fixed at 100 mbps, half-duplex.
> >  Basic mode status register 0x0082 ... 0082.
> >    Link status: not established.
> >    *** Link Jabber! ***
> >  Your link partner is generating 100baseTx link beat  (no autonegotiation).
> >    End of basic transceiver information.
> >
> > root@...chiatobin:~# ip link show dev eth0
> > 2: eth0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc mq state UP
> > mode DEFAULT group default qlen 2048
> >     link/ether 00:51:82:11:22:00 brd ff:ff:ff:ff:ff:ff
> >
> > But no traffic in any direction
>
> So you have the same version PHY hardware as I do.
>
> So, we need further diagnosis, which isn't possible without a more
> advanced mii-diag tool - I'm sorting that out now, and will provide
> a link to a git repo later this afternoon.
>

Ok, I'll wait for the tool

Thanks a lot,
-- 
Matteo Croce
per aspera ad upstream