diff options
Diffstat (limited to 'target/linux/generic/backport-6.6/790-53-v6.10-net-dsa-mt7530-do-not-set-MT7530_P5_DIS-when-PHY-.patch')
| -rw-r--r-- | target/linux/generic/backport-6.6/790-53-v6.10-net-dsa-mt7530-do-not-set-MT7530_P5_DIS-when-PHY-.patch | 45 |
1 files changed, 45 insertions, 0 deletions
diff --git a/target/linux/generic/backport-6.6/790-53-v6.10-net-dsa-mt7530-do-not-set-MT7530_P5_DIS-when-PHY-.patch b/target/linux/generic/backport-6.6/790-53-v6.10-net-dsa-mt7530-do-not-set-MT7530_P5_DIS-when-PHY-.patch new file mode 100644 index 0000000000..cee3d01728 --- /dev/null +++ b/target/linux/generic/backport-6.6/790-53-v6.10-net-dsa-mt7530-do-not-set-MT7530_P5_DIS-when-PHY-.patch @@ -0,0 +1,45 @@ +From 16e6592cd5c5bd74d8890973489f60176c692614 Mon Sep 17 00:00:00 2001 +From: =?UTF-8?q?Ar=C4=B1n=C3=A7=20=C3=9CNAL?= <arinc.unal@arinc9.com> +Date: Sun, 28 Apr 2024 12:19:58 +0300 +Subject: [PATCH] net: dsa: mt7530: do not set MT7530_P5_DIS when PHY muxing is + being used +MIME-Version: 1.0 +Content-Type: text/plain; charset=UTF-8 +Content-Transfer-Encoding: 8bit + +DSA initalises the ds->num_ports amount of ports in +dsa_switch_touch_ports(). When the PHY muxing feature is in use, port 5 +won't be defined in the device tree. Because of this, the type member of +the dsa_port structure for this port will be assigned DSA_PORT_TYPE_UNUSED. +The dsa_port_setup() function calls ds->ops->port_disable() when the port +type is DSA_PORT_TYPE_UNUSED. + +The MT7530_P5_DIS bit is unset in mt7530_setup() when PHY muxing is being +used. mt7530_port_disable() which is assigned to ds->ops->port_disable() is +called afterwards. Currently, mt7530_port_disable() sets MT7530_P5_DIS +which breaks network connectivity when PHY muxing is being used. + +Therefore, do not set MT7530_P5_DIS when PHY muxing is being used. + +Fixes: 377174c5760c ("net: dsa: mt7530: move MT753X_MTRAP operations for MT7530") +Reported-by: Daniel Golle <daniel@makrotopia.org> +Signed-off-by: Arınç ÜNAL <arinc.unal@arinc9.com> +Reviewed-by: Andrew Lunn <andrew@lunn.ch> +Link: https://lore.kernel.org/r/20240428-for-netnext-mt7530-do-not-disable-port5-when-phy-muxing-v2-1-bb7c37d293f8@arinc9.com +Signed-off-by: Paolo Abeni <pabeni@redhat.com> +--- + drivers/net/dsa/mt7530.c | 3 ++- + 1 file changed, 2 insertions(+), 1 deletion(-) + +--- a/drivers/net/dsa/mt7530.c ++++ b/drivers/net/dsa/mt7530.c +@@ -1220,7 +1220,8 @@ mt7530_port_disable(struct dsa_switch *d + if (priv->id != ID_MT7530 && priv->id != ID_MT7621) + return; + +- if (port == 5) ++ /* Do not set MT7530_P5_DIS when port 5 is being used for PHY muxing. */ ++ if (port == 5 && priv->p5_mode == GMAC5) + mt7530_set(priv, MT753X_MTRAP, MT7530_P5_DIS); + else if (port == 6) + mt7530_set(priv, MT753X_MTRAP, MT7530_P6_DIS); |