From: Marek Vasut <marex@nabladev.com>
To: Fidelio Lawson <lawson.fidelio@gmail.com>,
Woojung Huh <woojung.huh@microchip.com>,
UNGLinuxDriver@microchip.com, Andrew Lunn <andrew@lunn.ch>,
Vladimir Oltean <olteanv@gmail.com>,
"David S. Miller" <davem@davemloft.net>,
Eric Dumazet <edumazet@google.com>,
Jakub Kicinski <kuba@kernel.org>, Paolo Abeni <pabeni@redhat.com>,
Marek Vasut <marex@denx.de>,
Maxime Chevallier <maxime.chevallier@bootlin.com>,
Simon Horman <horms@kernel.org>,
Heiner Kallweit <hkallweit1@gmail.com>,
Russell King <linux@armlinux.org.uk>,
Tristram Ha <Tristram.Ha@microchip.com>
Cc: netdev@vger.kernel.org, linux-kernel@vger.kernel.org,
Fidelio Lawson <fidelio.lawson@exotec.com>
Subject: Re: [PATCH v6 2/3] net: ethtool: add KSZ87xx low-loss cable PHY tunables
Date: Wed, 20 May 2026 13:53:31 +0200 [thread overview]
Message-ID: <f8c53143-4aa2-41ca-b57c-58e04f3402d8@nabladev.com> (raw)
In-Reply-To: <20260520-ksz87xx_errata_low_loss_connections-v6-2-43f33d4aaf0f@exotec.com>
On 5/20/26 10:48 AM, Fidelio Lawson wrote:
> Introduce vendor-specific PHY tunable identifiers to control the
> KSZ87xx low-loss cable erratum handling through the ethtool PHY
> tunable interface.
>
> The following tunables are added:
>
> - a boolean "short-cable" tunable, applying a documented and
> conservative preset intended for short or low-loss Ethernet cables;
>
> - an integer LPF bandwidth tunable, allowing advanced adjustment of the
> receiver low-pass filter bandwidth;
>
> - an integer DSP EQ initial value tunable, allowing advanced tuning of
> the PHY equalizer initialization.
>
> The actual behavior is implemented by the corresponding PHY and switch
> drivers.
>
> Signed-off-by: Fidelio Lawson <fidelio.lawson@exotec.com>
Reviewed-by: Marek Vasut <marex@nabladev.com>
next prev parent reply other threads:[~2026-05-20 15:08 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-05-20 8:48 [PATCH v6 0/3] ksz87xx: add support for low-loss cable equalizer errata Fidelio Lawson
2026-05-20 8:48 ` [PATCH v6 1/3] net: dsa: microchip: implement KSZ87xx Module 3 low-loss cable errata Fidelio Lawson
2026-05-20 11:47 ` Marek Vasut
2026-05-20 8:48 ` [PATCH v6 2/3] net: ethtool: add KSZ87xx low-loss cable PHY tunables Fidelio Lawson
2026-05-20 11:53 ` Marek Vasut [this message]
2026-05-20 8:48 ` [PATCH v6 3/3] net: phy: micrel: expose KSZ87xx low-loss cable tunables Fidelio Lawson
2026-05-20 12:00 ` Marek Vasut
2026-05-22 17:15 ` [PATCH v6 0/3] ksz87xx: add support for low-loss cable equalizer errata Jakub Kicinski
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