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Date:   Mon, 22 May 2023 17:15:56 +0200
From:   Andrew Lunn <andrew@lunn.ch>
To:     Francesco Dolcini <francesco@dolcini.it>
Cc:     Praneeth Bajjuri <praneeth@ti.com>, Geet Modi <geet.modi@ti.com>,
        "David S. Miller" <davem@davemloft.net>,
        Heiner Kallweit <hkallweit1@gmail.com>,
        Russell King <linux@armlinux.org.uk>,
        Eric Dumazet <edumazet@google.com>,
        Jakub Kicinski <kuba@kernel.org>,
        Paolo Abeni <pabeni@redhat.com>, netdev@vger.kernel.org,
        linux-kernel@vger.kernel.org,
        Grygorii Strashko <grygorii.strashko@ti.com>,
        Dan Murphy <dmurphy@ti.com>
Subject: Re: DP83867 ethernet PHY regression
Message-ID: <e0d4b397-a8d9-4546-a8a2-14cf07914e64@lunn.ch>
References: <ZGuDJos8D7N0J6Z2@francesco-nb.int.toradex.com>
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On Mon, May 22, 2023 at 04:58:46PM +0200, Francesco Dolcini wrote:
> Hello all,
> commit da9ef50f545f ("net: phy: dp83867: perform soft reset and retain
> established link") introduces a regression on my TI AM62 based board.
> 
> I have a working DTS with Linux TI 5.10 downstream kernel branch, while
> testing the DTS with v6.4-rc in preparation of sending it to the mailing
> list I noticed that ethernet is working only on a cold poweron.

Do you have more details about how it does not work.

Please could you use:

mii-tool -vvv ethX

in both the good and bad state. The register values might give us a
clue.

Thanks
	Andrew