linux-kernel - [PATCH net-next 04/13] net: dsa: lantiq_gswip: set link parameters also for CPU port

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Message-ID: <b3db16f0ecb32e2ddfa2d9177f6b110f74b5187e.1761324950.git.daniel@makrotopia.org>
Date: Fri, 24 Oct 2025 18:02:14 +0100
From: Daniel Golle <daniel@...rotopia.org>
To: Hauke Mehrtens <hauke@...ke-m.de>, Andrew Lunn <andrew@...n.ch>,
	Vladimir Oltean <olteanv@...il.com>,
	"David S. Miller" <davem@...emloft.net>,
	Eric Dumazet <edumazet@...gle.com>,
	Jakub Kicinski <kuba@...nel.org>, Paolo Abeni <pabeni@...hat.com>,
	Rob Herring <robh@...nel.org>,
	Krzysztof Kozlowski <krzk+dt@...nel.org>,
	Conor Dooley <conor+dt@...nel.org>, Simon Horman <horms@...nel.org>,
	Russell King <linux@...linux.org.uk>, netdev@...r.kernel.org,
	devicetree@...r.kernel.org, linux-kernel@...r.kernel.org
Cc: Andreas Schirm <andreas.schirm@...mens.com>,
	Lukas Stockmann <lukas.stockmann@...mens.com>,
	Alexander Sverdlin <alexander.sverdlin@...mens.com>,
	Peter Christen <peter.christen@...mens.com>,
	Avinash Jayaraman <ajayaraman@...linear.com>,
	Bing tao Xu <bxu@...linear.com>, Liang Xu <lxu@...linear.com>,
	Juraj Povazanec <jpovazanec@...linear.com>,
	"Fanni (Fang-Yi) Chan" <fchan@...linear.com>,
	"Benny (Ying-Tsan) Weng" <yweng@...linear.com>,
	"Livia M. Rosu" <lrosu@...linear.com>,
	John Crispin <john@...ozen.org>
Subject: [PATCH net-next 04/13] net: dsa: lantiq_gswip: set link parameters
 also for CPU port

On standalone switch ICs the link parameters of the CPU port need to
be setup just like user ports. The destinction in the driver to not
carry out link parameter setup for the CPU port does make sense for
in-SoC switches on which the CPU port is internally connected to the
SoC's Ethernet MAC.
Set link parameters also for the CPU port unless it is an internal
interface.

Signed-off-by: Daniel Golle <daniel@...rotopia.org>
---
 drivers/net/dsa/lantiq/lantiq_gswip_common.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/net/dsa/lantiq/lantiq_gswip_common.c b/drivers/net/dsa/lantiq/lantiq_gswip_common.c
index 00d4aff96f12..7ea5f26f3899 100644
--- a/drivers/net/dsa/lantiq/lantiq_gswip_common.c
+++ b/drivers/net/dsa/lantiq/lantiq_gswip_common.c
@@ -1459,7 +1459,7 @@ static void gswip_phylink_mac_link_up(struct phylink_config *config,
 	struct gswip_priv *priv = dp->ds->priv;
 	int port = dp->index;
 
-	if (!dsa_port_is_cpu(dp)) {
+	if (!dsa_port_is_cpu(dp) || interface != PHY_INTERFACE_MODE_INTERNAL) {
 		gswip_port_set_link(priv, port, true);
 		gswip_port_set_speed(priv, port, speed, interface);
 		gswip_port_set_duplex(priv, port, duplex);
-- 
2.51.0