From 4fed462454469e9af89bc92cd12d30c47d43efe4 Mon Sep 17 00:00:00 2001 From: "J. S. Seldenthuis" Date: Sun, 23 Feb 2025 13:54:58 +0100 Subject: [PATCH] ramips: use openwrt,netdev-name to fix port name conflict on TP-Link Deco M4R v4 Since 24.10.0, eth0, used for the WAN interface, does not work. From dmesg: ... [ 1.831126] mt7530-mdio mdio-bus:1f: MT7530 adapts as multi-chip module [ 1.846204] mtk_soc_eth 1e100000.ethernet eth0: mediatek frame engine at 0xbe100000, irq 19 ... [ 1.933969] mt7530-mdio mdio-bus:1f: MT7530 adapts as multi-chip module [ 1.967668] mt7530-mdio mdio-bus:1f: configuring for fixed/rgmii link mode [ 1.975999] mt7530-mdio mdio-bus:1f eth0 (uninitialized): PHY [mt7530-0:00] driver [MediaTek MT7530 PHY] (irq=21) [ 1.986907] mt7530-mdio mdio-bus:1f: Link is Up - 1Gbps/Full - flow control rx/tx [ 1.987149] mtk_soc_eth 1e100000.ethernet eth0: error -17 registering interface eth0 [ 2.004157] mt7530-mdio mdio-bus:1f eth1 (uninitialized): PHY [mt7530-0:01] driver [MediaTek MT7530 PHY] (irq=22) [ 2.017698] mtk_soc_eth 1e100000.ethernet eth0: entered promiscuous mode [ 2.024849] DSA: tree 0 setup ... [ 4.249680] mtk_soc_eth 1e100000.ethernet dsa: renamed from eth0 ... Like #15865, it seems that gmac0 does not rename eth0 to dsa until after the switch ports are initialized, leading to a name collision (error -17 = EEXIST). This patch follows #17062 by using openwrt,netdev-name to fix the collision. Signed-off-by: J. S. Seldenthuis Link: https://github.com/openwrt/openwrt/pull/18082 Signed-off-by: Hauke Mehrtens --- target/linux/ramips/dts/mt7621_tplink_deco-m4r-v4.dts | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) diff --git a/target/linux/ramips/dts/mt7621_tplink_deco-m4r-v4.dts b/target/linux/ramips/dts/mt7621_tplink_deco-m4r-v4.dts index 6274f985998..b9e359d2f14 100644 --- a/target/linux/ramips/dts/mt7621_tplink_deco-m4r-v4.dts +++ b/target/linux/ramips/dts/mt7621_tplink_deco-m4r-v4.dts @@ -181,19 +181,19 @@ &gmac0 { nvmem-cells = <&macaddr_config_8>; nvmem-cell-names = "mac-address"; - label = "dsa"; + openwrt,netdev-name = "dsa"; }; &switch0 { ports { port@0 { status = "okay"; - label = "eth0"; + openwrt,netdev-name = "eth0"; }; port@1 { status = "okay"; - label = "eth1"; + openwrt,netdev-name = "eth1"; }; }; };