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charset=us-ascii Content-Disposition: inline In-Reply-To: <20251106094742.2104099-2-maxime.chevallier@bootlin.com> X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org On Thu, Nov 06, 2025 at 10:47:26AM +0100, Maxime Chevallier wrote: > 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. > > Signed-off-by: Maxime Chevallier > --- > .../bindings/net/ethernet-connector.yaml | 53 +++++++++++++++++++ > .../devicetree/bindings/net/ethernet-phy.yaml | 18 +++++++ > MAINTAINERS | 1 + > 3 files changed, 72 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..2b67907582c7 > --- /dev/null > +++ b/Documentation/devicetree/bindings/net/ethernet-connector.yaml > @@ -0,0 +1,53 @@ > +# 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 > + > +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: > + > + pairs: > + description: > + Defines the number of BaseT pairs that are used on the connector. > + $ref: /schemas/types.yaml#/definitions/uint32 Constraints? Wouldn't 4 pairs be the max? Is it possible you need to know which pairs are wired? > + > + media: Both of these names are a bit generic though I don't have a better suggestion. > + description: > + The mediums, as defined in 802.3, that can be used on the port. > + enum: > + - BaseT > + - BaseK > + - BaseS > + - BaseC > + - BaseL > + - BaseD > + - BaseE > + - BaseF > + - BaseV > + - BaseMLD > + > +required: > + - media > + > +allOf: > + - if: > + properties: > + media: > + contains: > + const: BaseT > + then: > + required: > + - pairs else: properties: pairs: false ?? > + > +additionalProperties: true > + > +... > diff --git a/Documentation/devicetree/bindings/net/ethernet-phy.yaml b/Documentation/devicetree/bindings/net/ethernet-phy.yaml > index 2ec2d9fda7e3..f434768d6bae 100644 > --- a/Documentation/devicetree/bindings/net/ethernet-phy.yaml > +++ b/Documentation/devicetree/bindings/net/ethernet-phy.yaml > @@ -277,6 +277,17 @@ properties: > > additionalProperties: false > > + mdi: > + type: object > + > + patternProperties: > + '^connector-[a-f0-9]+$': Unit addresses are hex, index suffixes are decimal: connector-[0-9]+ > + $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 { > + pairs = <2>; > + media = "BaseT"; > + }; > + }; > }; > }; > diff --git a/MAINTAINERS b/MAINTAINERS > index 1ab7e8746299..19ba82b98616 100644 > --- a/MAINTAINERS > +++ b/MAINTAINERS > @@ -9276,6 +9276,7 @@ R: Russell King > 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 > -- > 2.49.0 >