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From: Coia Prant <coiaprant@gmail.com>
To: Jakub Kicinski <kuba@kernel.org>
Cc: Coia Prant <coiaprant@gmail.com>, Andrew Lunn <andrew@lunn.ch>,
	Heiner Kallweit <hkallweit1@gmail.com>,
	Russell King <linux@armlinux.org.uk>,
	"David S . Miller" <davem@davemloft.net>,
	Eric Dumazet <edumazet@kernel.org>,
	Paolo Abeni <pabeni@redhat.com>,
	netdev@vger.kernel.org, linux-rockchip@lists.infradead.org,
	linux-kernel@vger.kernel.org
Subject: [PATCH net] net: pcs: xpcs-rk: limit advertised interfaces
Date: Thu, 29 Oct 2026 17:49:17 +0800	[thread overview]
Message-ID: <20261029094916.3127193-2-coiaprant@gmail.com> (raw)

The RK3568 XPCS supports 1000BASE-X, SGMII and QSGMII, but the RK3568
GMAC only implements SGMII, so only SGMII is advertised in
supported_interfaces.

The generic xpcs core fills the mask from the compat table, which
includes 1000BASE-X, QSGMII and the higher-speed modes. Clearing it and
setting only SGMII keeps phylink from validating interfaces that are
not usable here.

1000BASE-X and QSGMII can be enabled later when a board actually wires
them up.

Signed-off-by: Coia Prant <coiaprant@gmail.com>
---
 drivers/net/pcs/pcs-xpcs-rk.c | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/drivers/net/pcs/pcs-xpcs-rk.c b/drivers/net/pcs/pcs-xpcs-rk.c
index 6f0a110e32d2..cc11a70d624f 100644
--- a/drivers/net/pcs/pcs-xpcs-rk.c
+++ b/drivers/net/pcs/pcs-xpcs-rk.c
@@ -536,6 +536,12 @@ struct dw_xpcs *xpcs_rk_create(struct device *dev, struct device_node *pcs, int
 		return xpcs;
 	}
 
+	/*
+	 * The RK3568 XPCS supports 1000BASE-X, SGMII and QSGMII.
+	 */
+	phy_interface_zero(xpcs->pcs.supported_interfaces);
+	__set_bit(PHY_INTERFACE_MODE_SGMII, xpcs->pcs.supported_interfaces);
+
 	xpcs_config_eee_mult_fact(xpcs, pxpcs->eee_mult_fact);
 	put_device(&pdev->dev);
 	return xpcs;
-- 
2.47.3


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WARNING: multiple messages have this Message-ID (diff)
From: Coia Prant <coiaprant@gmail.com>
To: Jakub Kicinski <kuba@kernel.org>
Cc: Coia Prant <coiaprant@gmail.com>, Andrew Lunn <andrew@lunn.ch>,
	Heiner Kallweit <hkallweit1@gmail.com>,
	Russell King <linux@armlinux.org.uk>,
	"David S . Miller" <davem@davemloft.net>,
	Eric Dumazet <edumazet@kernel.org>,
	Paolo Abeni <pabeni@redhat.com>,
	netdev@vger.kernel.org, linux-rockchip@lists.infradead.org,
	linux-kernel@vger.kernel.org
Subject: [PATCH net] net: pcs: xpcs-rk: limit advertised interfaces
Date: Thu, 29 Oct 2026 17:49:17 +0800	[thread overview]
Message-ID: <20261029094916.3127193-2-coiaprant@gmail.com> (raw)

The RK3568 XPCS supports 1000BASE-X, SGMII and QSGMII, but the RK3568
GMAC only implements SGMII, so only SGMII is advertised in
supported_interfaces.

The generic xpcs core fills the mask from the compat table, which
includes 1000BASE-X, QSGMII and the higher-speed modes. Clearing it and
setting only SGMII keeps phylink from validating interfaces that are
not usable here.

1000BASE-X and QSGMII can be enabled later when a board actually wires
them up.

Signed-off-by: Coia Prant <coiaprant@gmail.com>
---
 drivers/net/pcs/pcs-xpcs-rk.c | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/drivers/net/pcs/pcs-xpcs-rk.c b/drivers/net/pcs/pcs-xpcs-rk.c
index 6f0a110e32d2..cc11a70d624f 100644
--- a/drivers/net/pcs/pcs-xpcs-rk.c
+++ b/drivers/net/pcs/pcs-xpcs-rk.c
@@ -536,6 +536,12 @@ struct dw_xpcs *xpcs_rk_create(struct device *dev, struct device_node *pcs, int
 		return xpcs;
 	}
 
+	/*
+	 * The RK3568 XPCS supports 1000BASE-X, SGMII and QSGMII.
+	 */
+	phy_interface_zero(xpcs->pcs.supported_interfaces);
+	__set_bit(PHY_INTERFACE_MODE_SGMII, xpcs->pcs.supported_interfaces);
+
 	xpcs_config_eee_mult_fact(xpcs, pxpcs->eee_mult_fact);
 	put_device(&pdev->dev);
 	return xpcs;
-- 
2.47.3


             reply	other threads:[~2026-10-29  9:50 UTC|newest]

Thread overview: 6+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2026-10-29  9:49 Coia Prant [this message]
2026-10-29  9:49 ` [PATCH net] net: pcs: xpcs-rk: limit advertised interfaces Coia Prant
2026-10-29  9:56 ` netdev-bot+sinfo
2026-10-29  9:56   ` netdev-bot+sinfo
2026-10-29 10:23   ` Coia Prant
2026-10-29 10:23     ` Coia Prant

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