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Message-ID: <ZGuLxSJwXbSE/Rbb@francesco-nb.int.toradex.com> Date: Mon, 22 May 2023 17:35:33 +0200 From: Francesco Dolcini <francesco@...cini.it> To: Andrew Lunn <andrew@...n.ch> Cc: Francesco Dolcini <francesco@...cini.it>, Praneeth Bajjuri <praneeth@...com>, Geet Modi <geet.modi@...com>, "David S. Miller" <davem@...emloft.net>, Heiner Kallweit <hkallweit1@...il.com>, Russell King <linux@...linux.org.uk>, Eric Dumazet <edumazet@...gle.com>, Jakub Kicinski <kuba@...nel.org>, Paolo Abeni <pabeni@...hat.com>, netdev@...r.kernel.org, linux-kernel@...r.kernel.org, Grygorii Strashko <grygorii.strashko@...com>, Dan Murphy <dmurphy@...com> Subject: Re: DP83867 ethernet PHY regression On Mon, May 22, 2023 at 05:15:56PM +0200, Andrew Lunn wrote: > 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 please see the attached files: working_da9ef50f545f_reverted.txt this is on a v6.4-rc, with da9ef50f545f reverted not_working.txt v6.4-rc not working working.txt v6.4-rc working It looks like, even on cold boot, it's not working in a reliable way. Not sure the exact difference when it's working and when it's not. > in both the good and bad state. The register values might give us a > clue. Thanks for your help, Francesco View attachment "not_working.txt" of type "text/plain" (676 bytes) View attachment "working_da9ef50f545f_reverted.txt" of type "text/plain" (676 bytes) View attachment "working.txt" of type "text/plain" (677 bytes)
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