[PATCH net-next 01/10] dt-bindings: net: airoha: Add EN7581 ethernet-ports properties
From: Lorenzo Bianconi <lorenzo@kernel.org>
Date: 2026-03-29 13:08:18
Also in:
linux-arm-kernel, linux-devicetree, linux-mediatek
Subsystem:
airoha ethernet driver, networking drivers, open firmware and flattened device tree bindings, the rest · Maintainers:
Lorenzo Bianconi, Andrew Lunn, "David S. Miller", Eric Dumazet, Jakub Kicinski, Paolo Abeni, Rob Herring, Krzysztof Kozlowski, Conor Dooley, Linus Torvalds
EN7581 and AN7583 SoCs support connecting multiple external SerDes to GDM3
or GDM4 ports via a hw multiplexer that manages the traffic in a TDM
manner. As a result multiple net_devices can connect to the same GDM{3,4}
port and there is a theoretical "1:n" relation between GDM ports and
net_devices.
Introduce the ethernet-port property in order to model a given net_device
that is connected via the external multiplexer to the GDM{3,4} port (that
is represented by the ethernet property. Please note GDM1 or GDM2 does not
support the connection with the external multiplexer and are represented
by ethernet property.
Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org>
---
.../devicetree/bindings/net/airoha,en7581-eth.yaml | 44 +++++++++++++++++++++-
1 file changed, 43 insertions(+), 1 deletion(-)
diff --git a/Documentation/devicetree/bindings/net/airoha,en7581-eth.yaml b/Documentation/devicetree/bindings/net/airoha,en7581-eth.yaml
index fbe2ddcdd909cb3d853a4ab9e9fec4af1d096c52..ebbd433e9c9fbfaefd8d07c3678cabc91574d125 100644
--- a/Documentation/devicetree/bindings/net/airoha,en7581-eth.yaml
+++ b/Documentation/devicetree/bindings/net/airoha,en7581-eth.yaml@@ -130,6 +130,30 @@ patternProperties: maximum: 4 description: GMAC port identifier + '#address-cells': + const: 1 + '#size-cells': + const: 0 + + patternProperties: + "^ethernet-port@[0-5]$": + type: object + unevaluatedProperties: false + $ref: ethernet-controller.yaml# + description: External ethernet port ID available on the GDM port + + properties: + compatible: + const: airoha,eth-port + + reg: + maxItems: 1 + description: External ethernet port identifier + + required: + - compatible + - reg + required: - reg - compatible
@@ -191,9 +215,27 @@ examples: #address-cells = <1>; #size-cells = <0>; - mac: ethernet@1 { + mac1: ethernet@1 { compatible = "airoha,eth-mac"; reg = <1>; }; + + mac4: ethernet@4 { + compatible = "airoha,eth-mac"; + reg = <4>; + + #address-cells = <1>; + #size-cells = <0>; + + ethernet-port@0 { + compatible = "airoha,eth-port"; + reg = <0>; + }; + + ethernet-port@1 { + compatible = "airoha,eth-port"; + reg = <1>; + }; + }; }; };
--
2.53.0