[PATCH net-next v11 01/16] dt-bindings: net: Introduce the ethernet-connector description
From: Maxime Chevallier <maxime.chevallier@bootlin.com>
Date: 2025-08-14 13:58:48
Also in:
linux-arm-kernel, linux-arm-msm, linux-devicetree, lkml
Subsystem:
ethernet phy library, networking drivers, networking [ethtool phy port], open firmware and flattened device tree bindings, the rest · Maintainers:
Andrew Lunn, Heiner Kallweit, "David S. Miller", Eric Dumazet, Jakub Kicinski, Paolo Abeni, Maxime Chevallier, Rob Herring, Krzysztof Kozlowski, Conor Dooley, Linus Torvalds
The ability to describe the physical ports of Ethernet devices is useful to describe multi-port devices, as well as to remove any ambiguity with regard to the nature of the port. Moreover, describing ports allows for a better description of features that are tied to connectors, such as PoE through the PSE-PD devices. Introduce a binding to allow describing the ports, for now with 2 attributes : - The number of lanes, which is a quite generic property that allows differentating between multiple similar technologies such as BaseT1 and "regular" BaseT (which usually means BaseT4). - The media that can be used on that port, such as BaseT for Twisted Copper, BaseC for coax copper, BaseS/L for Fiber, BaseK for backplane ethernet, etc. This allows defining the nature of the port, and therefore avoids the need for vendor-specific properties such as "micrel,fiber-mode" or "ti,fiber-mode". The port description lives in its own file, as it is intended in the future to allow describing the ports for phy-less devices. Reviewed-by: Rob Herring (Arm) <robh@kernel.org> Reviewed-by: Kory Maincent <kory.maincent@bootlin.com> Reviewed-by: Christophe Leroy <redacted> Signed-off-by: Maxime Chevallier <maxime.chevallier@bootlin.com> --- .../bindings/net/ethernet-connector.yaml | 45 +++++++++++++++++++ .../devicetree/bindings/net/ethernet-phy.yaml | 18 ++++++++ MAINTAINERS | 1 + 3 files changed, 64 insertions(+) create mode 100644 Documentation/devicetree/bindings/net/ethernet-connector.yaml
diff --git a/Documentation/devicetree/bindings/net/ethernet-connector.yaml b/Documentation/devicetree/bindings/net/ethernet-connector.yaml
new file mode 100644
index 000000000000..32ae9f45b0e4
--- /dev/null
+++ b/Documentation/devicetree/bindings/net/ethernet-connector.yaml@@ -0,0 +1,45 @@ +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/net/ethernet-connector.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: Generic Ethernet Connector + +maintainers: + - Maxime Chevallier <maxime.chevallier@bootlin.com> + +description: + An Ethernet Connector represents the output of a network component such as + a PHY, an Ethernet controller with no PHY, or an SFP module. + +properties: + + lanes: + description: + Defines the number of lanes on the port, that is the number of physical + channels used to convey the data with the link partner. + $ref: /schemas/types.yaml#/definitions/uint32 + + media: + description: + The mediums, as defined in 802.3, that can be used on the port. + enum: + - BaseT + - BaseK + - BaseS + - BaseC + - BaseL + - BaseD + - BaseE + - BaseF + - BaseV + - BaseMLD + +required: + - lanes + - media + +additionalProperties: true + +...
diff --git a/Documentation/devicetree/bindings/net/ethernet-phy.yaml b/Documentation/devicetree/bindings/net/ethernet-phy.yaml
index 71e2cd32580f..64bd23b7073d 100644
--- a/Documentation/devicetree/bindings/net/ethernet-phy.yaml
+++ b/Documentation/devicetree/bindings/net/ethernet-phy.yaml@@ -277,6 +277,17 @@ properties: additionalProperties: false + mdi: + type: object + + patternProperties: + '^connector-[a-f0-9]+$': + $ref: /schemas/net/ethernet-connector.yaml# + + unevaluatedProperties: false + + additionalProperties: false + required: - reg
@@ -313,5 +324,12 @@ examples: default-state = "keep"; }; }; + /* Fast Ethernet port, with only 2 pairs wired */ + mdi { + connector-0 { + lanes = <2>; + media = "BaseT"; + }; + }; }; };
diff --git a/MAINTAINERS b/MAINTAINERS
index bd62ad58a47f..1bee02451c4d 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS@@ -9094,6 +9094,7 @@ R: Russell King <linux@armlinux.org.uk> L: netdev@vger.kernel.org S: Maintained F: Documentation/ABI/testing/sysfs-class-net-phydev +F: Documentation/devicetree/bindings/net/ethernet-connector.yaml F: Documentation/devicetree/bindings/net/ethernet-phy.yaml F: Documentation/devicetree/bindings/net/mdio* F: Documentation/devicetree/bindings/net/qca,ar803x.yaml
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2.49.0