linux-kernel - Re: [PATCH net 2/2] net: pcs: xpcs: actively unset DW_VR_MII_DIG_CTRL1_2G5

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Message-ID: <20250115153932.79d181eb@fedora.home>
Date: Wed, 15 Jan 2025 15:39:32 +0100
From: Maxime Chevallier <maxime.chevallier@...tlin.com>
To: Vladimir Oltean <vladimir.oltean@....com>
Cc: netdev@...r.kernel.org, Jose Abreu <Jose.Abreu@...opsys.com>, Andrew
 Lunn <andrew@...n.ch>, Heiner Kallweit <hkallweit1@...il.com>, Russell King
 <linux@...linux.org.uk>, "David S. Miller" <davem@...emloft.net>, Eric
 Dumazet <edumazet@...gle.com>, Jakub Kicinski <kuba@...nel.org>, Paolo
 Abeni <pabeni@...hat.com>, "Russell King (Oracle)"
 <rmk+kernel@...linux.org.uk>, Voon Weifeng <weifeng.voon@...el.com>,
 Michael Sit Wei Hong <michael.wei.hong.sit@...el.com>,
 linux-kernel@...r.kernel.org
Subject: Re: [PATCH net 2/2] net: pcs: xpcs: actively unset
 DW_VR_MII_DIG_CTRL1_2G5_EN for 1G SGMII

Hello Vlad,

On Tue, 14 Jan 2025 18:47:21 +0200
Vladimir Oltean <vladimir.oltean@....com> wrote:

> xpcs_config_2500basex() sets DW_VR_MII_DIG_CTRL1_2G5_EN, but
> xpcs_config_aneg_c37_sgmii() never unsets it. So, on a protocol change
> from 2500base-x to sgmii, the DW_VR_MII_DIG_CTRL1_2G5_EN bit will remain
> set.
> 
> Fixes: f27abde3042a ("net: pcs: add 2500BASEX support for Intel mGbE controller")
> Signed-off-by: Vladimir Oltean <vladimir.oltean@....com>

Reviewed-by: Maxime Chevallier <maxime.chevallier@...tlin.com>

Thanks,

Maxime