From: Nicolai Buchwitz <nb@tipi-net.de>
To: Fidelio Lawson <lawson.fidelio@gmail.com>
Cc: 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>,
netdev@vger.kernel.org, linux-kernel@vger.kernel.org,
Fidelio Lawson <fidelio.lawson@exotec.com>,
Marek Vasut <marex@nabladev.com>
Subject: Re: [PATCH net-next v8 2/3] net: ethtool: add KSZ87xx low-loss cable PHY tunables
Date: Mon, 01 Jun 2026 15:26:40 +0200 [thread overview]
Message-ID: <47ce6b5cb11318415b4e71a457c9e9d2@tipi-net.de> (raw)
In-Reply-To: <20260601-ksz87xx_errata_low_loss_connections-v8-2-cfa102cf62c0@exotec.com>
On 1.6.2026 13:54, 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.
>
> Reviewed-by: Marek Vasut <marex@nabladev.com>
> Signed-off-by: Fidelio Lawson <fidelio.lawson@exotec.com>
> ---
> [...]
Reviewed-by: Nicolai Buchwitz <nb@tipi-net.de>
Thanks
Nicolai
next prev parent reply other threads:[~2026-06-01 13:26 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-06-01 11:54 [PATCH net-next v8 0/3] ksz87xx: add support for low-loss cable equalizer errata Fidelio Lawson
2026-06-01 11:54 ` [PATCH net-next v8 1/3] net: dsa: microchip: implement KSZ87xx Module 3 low-loss cable errata Fidelio Lawson
2026-06-01 13:40 ` Nicolai Buchwitz
2026-06-01 13:44 ` Marek Vasut
2026-06-01 11:54 ` [PATCH net-next v8 2/3] net: ethtool: add KSZ87xx low-loss cable PHY tunables Fidelio Lawson
2026-06-01 13:26 ` Nicolai Buchwitz [this message]
2026-06-01 11:54 ` [PATCH net-next v8 3/3] net: phy: micrel: expose KSZ87xx low-loss cable tunables Fidelio Lawson
2026-06-01 13:25 ` Nicolai Buchwitz
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