linux-kernel - [PATCH 0/2] Populate of

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Message-Id: <20250717090037.4097520-1-primoz.fiser@norik.com>
Date: Thu, 17 Jul 2025 11:00:35 +0200
From: Primoz Fiser <primoz.fiser@...ik.com>
To: Wei Fang <wei.fang@....com>,
	Shenwei Wang <shenwei.wang@....com>,
	Clark Wang <xiaoning.wang@....com>,
	Andrew Lunn <andrew+netdev@...n.ch>,
	davem@...emloft.net,
	Eric Dumazet <edumazet@...gle.com>,
	Jakub Kicinski <kuba@...nel.org>,
	Paolo Abeni <pabeni@...hat.com>,
	Maxime Coquelin <mcoquelin.stm32@...il.com>,
	Alexandre Torgue <alexandre.torgue@...s.st.com>
Cc: imx@...ts.linux.dev,
	netdev@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	linux-stm32@...md-mailman.stormreply.com,
	linux-arm-kernel@...ts.infradead.org,
	upstream@...ts.phytec.de
Subject: [PATCH 0/2] Populate of_node for i.MX netdevs

Recently when working on predictable network names for i.MX SoCs, it
was discovered that of_node sysfs properties are missing for FEC and
EQOS interfaces.

Without this, udev is unable to expose the OF_* properties (OF_NAME,
OF_FULLNAME, OF_COMPATIBLE, OF_ALIAS, etc.) and thus we cannot identify
interface based on those properties.

Fix this by populating netdev of_node in respective drivers.

Result:

$ ls -l /sys/class/net/end1/of_node
/sys/class/net/end1/of_node -> 
'../../../../../../../firmware/devicetree/base/soc@...us@...00000/ethernet@...a0000'/
$ ls -l /sys/class/net/end0/of_node                                                                              
/sys/class/net/end0/of_node -> 
'../../../../../../../firmware/devicetree/base/soc@...us@...00000/ethernet@...90000'/

$ udevadm info /sys/class/net/end0
P: /devices/platform/soc@...2800000.bus/42890000.ethernet/net/end0
M: end0
R: 0
U: net
I: 2
E: DEVPATH=/devices/platform/soc@...2800000.bus/42890000.ethernet/net/end0
E: SUBSYSTEM=net
E: OF_NAME=ethernet
E: OF_FULLNAME=/soc@...us@...00000/ethernet@...90000
E: OF_COMPATIBLE_0=fsl,imx93-fec
E: OF_COMPATIBLE_1=fsl,imx8mq-fec
E: OF_COMPATIBLE_2=fsl,imx6sx-fec
E: OF_COMPATIBLE_N=3
E: OF_ALIAS_0=ethernet0
E: INTERFACE=end0
E: IFINDEX=2
E: USEC_INITIALIZED=5227083
E: ID_NET_DRIVER=fec
E: ID_NET_NAMING_SCHEME=latest
E: ID_NET_NAME_MAC=enx502df44dbd5e
E: ID_NET_NAME_ONBOARD=end0
E: ID_PATH=platform-42890000.ethernet
E: ID_PATH_TAG=platform-42890000_ethernet
E: SYSTEMD_ALIAS=/sys/subsystem/net/devices/end0
E: TAGS=:systemd:
E: CURRENT_TAGS=:systemd:

$ udevadm info /sys/class/net/end1
P: /devices/platform/soc@...2800000.bus/428a0000.ethernet/net/end1
M: end1
R: 1
U: net
I: 3
E: DEVPATH=/devices/platform/soc@...2800000.bus/428a0000.ethernet/net/end1
E: SUBSYSTEM=net
E: OF_NAME=ethernet
E: OF_FULLNAME=/soc@...us@...00000/ethernet@...a0000
E: OF_COMPATIBLE_0=nxp,imx93-dwmac-eqos
E: OF_COMPATIBLE_1=snps,dwmac-5.10a
E: OF_COMPATIBLE_N=2
E: OF_ALIAS_0=ethernet1
E: INTERFACE=end1
E: IFINDEX=3
E: USEC_INITIALIZED=5370305
E: ID_NET_NAMING_SCHEME=latest
E: ID_NET_NAME_MAC=enx502df44dbd5f
E: ID_NET_NAME_ONBOARD=end1
E: ID_PATH=platform-428a0000.ethernet
E: ID_PATH_TAG=platform-428a0000_ethernet
E: SYSTEMD_ALIAS=/sys/subsystem/net/devices/end1
E: TAGS=:systemd:
E: CURRENT_TAGS=:systemd:


Primoz Fiser (2):
  net: fec: fec_probe(): Populate netdev of_node
  net: stmmac: Populate netdev of_node

 drivers/net/ethernet/freescale/fec_main.c         | 1 +
 drivers/net/ethernet/stmicro/stmmac/stmmac_main.c | 1 +
 2 files changed, 2 insertions(+)

-- 
2.34.1