From: "Russell King (Oracle)" <linux@armlinux.org.uk>
To: Maxime Chevallier <maxime.chevallier@bootlin.com>
Cc: davem@davemloft.net, "Andrew Lunn" <andrew@lunn.ch>,
"Jakub Kicinski" <kuba@kernel.org>,
"Eric Dumazet" <edumazet@google.com>,
"Paolo Abeni" <pabeni@redhat.com>,
netdev@vger.kernel.org, linux-kernel@vger.kernel.org,
thomas.petazzoni@bootlin.com, "Simon Horman" <horms@kernel.org>,
"Alexis Lothoré" <alexis.lothore@bootlin.com>
Subject: Re: [PATCH net 2/3] net: stmmac: socfpga: Don't check for phy to enable the SGMII adapter
Date: Tue, 22 Apr 2025 11:26:23 +0100 [thread overview]
Message-ID: <aAduzwMTLvaeyQkb@shell.armlinux.org.uk> (raw)
In-Reply-To: <20250422094701.49798-3-maxime.chevallier@bootlin.com>
On Tue, Apr 22, 2025 at 11:46:56AM +0200, Maxime Chevallier wrote:
> The SGMII adapter needs to be enabled for both Cisco SGMII and 1000BaseX
> operations. It doesn't make sense to check for an attached phydev here,
> as we simply might not have any, in particular if we're using the
> 1000BaseX interface mode.
>
> So, check only for the presence of a SGMII adapter to re-enable it after
> a link config.
I wonder whether:
struct stmmac_priv *priv = netdev_priv(dev_get_drvdata(dwmac->dev));
if ((priv->plat->phy_interface == PHY_INTERFACE_MODE_SGMII ||
priv->plat->phy_interface == PHY_INTERFACE_MODE_1000BASEX) &&
sgmii_adapter_base)
writew(SGMII_ADAPTER_ENABLE,
sgmii_adapter_base + SGMII_ADAPTER_CTRL_REG);
would describe the required functionality here better, making it clear
under which interface modes we expect to set the enable bits.
--
RMK's Patch system: https://www.armlinux.org.uk/developer/patches/
FTTP is here! 80Mbps down 10Mbps up. Decent connectivity at last!
next prev parent reply other threads:[~2025-04-22 10:26 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-04-22 9:46 [PATCH net 0/3] net: stmmac: socfpga: 1000BaseX support and cleanups Maxime Chevallier
2025-04-22 9:46 ` [PATCH net 1/3] net: stmmac: socfpga: Enable internal GMII when using 1000BaseX Maxime Chevallier
2025-04-22 10:23 ` Russell King (Oracle)
2025-04-22 9:46 ` [PATCH net 2/3] net: stmmac: socfpga: Don't check for phy to enable the SGMII adapter Maxime Chevallier
2025-04-22 10:26 ` Russell King (Oracle) [this message]
2025-04-22 11:54 ` Maxime Chevallier
2025-04-22 9:46 ` [PATCH net 3/3] net: stmmac: socfpga: Remove unused pcs-mdiodev field Maxime Chevallier
2025-04-22 10:26 ` Russell King (Oracle)
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