From: Oleksij Rempel <o.rempel@pengutronix.de>
To: Andrew Lunn <andrew@lunn.ch>
Cc: "David S. Miller" <davem@davemloft.net>,
Eric Dumazet <edumazet@google.com>,
Florian Fainelli <f.fainelli@gmail.com>,
Jakub Kicinski <kuba@kernel.org>, Paolo Abeni <pabeni@redhat.com>,
Vladimir Oltean <olteanv@gmail.com>,
Woojung Huh <woojung.huh@microchip.com>,
"Russell King (Oracle)" <linux@armlinux.org.uk>,
Heiner Kallweit <hkallweit1@gmail.com>,
stable@vger.kernel.org, kernel@pengutronix.de,
linux-kernel@vger.kernel.org, netdev@vger.kernel.org,
UNGLinuxDriver@microchip.com
Subject: Re: [PATCH net v1 1/2] net: dsa: microchip: let phylink manage PHY EEE configuration on KSZ switches
Date: Mon, 28 Apr 2025 20:07:04 +0200 [thread overview]
Message-ID: <aA_DyKw8AVPdmu-Y@pengutronix.de> (raw)
In-Reply-To: <4d8a3e79-f454-4e2f-9362-c842354b123a@lunn.ch>
On Mon, Apr 28, 2025 at 06:51:19PM +0200, Andrew Lunn wrote:
> > +/**
> > + * ksz_phylink_mac_disable_tx_lpi() - Dummy handler to disable TX LPI
> > + * @config: phylink config structure
> > + *
> > + * For ports with integrated PHYs, LPI is managed internally by hardware.
>
> Could you expand that.
>
> Does it mean the hardware will look at the results of the autoneg and
> disable/enable LPI depending on those results?
Yes.
> I also assume this means it is not possible to force LPI on/off, independent
> of autoneg?
Correct. set_eee call in this driver is filtering (tx_lpi == false) to
reflect HW functionality.
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next prev parent reply other threads:[~2025-04-28 18:07 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-04-28 12:51 [PATCH net v1 0/2] address EEE regressions on KSZ switches since v6.9 (v6.14+) Oleksij Rempel
2025-04-28 12:51 ` [PATCH net v1 1/2] net: dsa: microchip: let phylink manage PHY EEE configuration on KSZ switches Oleksij Rempel
2025-04-28 16:51 ` Andrew Lunn
2025-04-28 18:07 ` Oleksij Rempel [this message]
2025-04-29 6:51 ` Oleksij Rempel
2025-04-28 12:51 ` [PATCH net v1 2/2] net: phy: micrel: remove KSZ9477 EEE quirks now handled by phylink Oleksij Rempel
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