[PATCH net-next 6/7] dt-bindings: net: dsa: mediatek,mt7530: add econet,en751221
From: Caleb James DeLisle <cjd@cjdns.fr>
Date: 2026-09-09 14:04:40
Also in:
linux-arm-kernel, linux-devicetree, linux-mediatek, lkml
Subsystem:
networking drivers, networking [dsa], open firmware and flattened device tree bindings, the rest · Maintainers:
Andrew Lunn, "David S. Miller", Eric Dumazet, Jakub Kicinski, Paolo Abeni, Andrew Lunn, Vladimir Oltean, Rob Herring, Krzysztof Kozlowski, Conor Dooley, Linus Torvalds
The EcoNet EN751221 MIPS SoC integrates an MT7530 switch memory-mapped in the SoC register space. It is similar to the econet,en7528-switch except that ports 0..3 are 10/100 only, port 4 has a gigabit PHY, and port 5 has no PHY, but is in some implementations connected to a downstream MT7530 multi-chip module via a TRGMII link. The downstream MT7530 is similar to the MT7621 multi-chip module and has all gigabit ports. Add the econet,en751221-switch compatible with the same constraints as the other built-in switches and also add the econet,en751221 multi-chip-module switch whose port 6 is configured as a DSA link port. Signed-off-by: Caleb James DeLisle <cjd@cjdns.fr> --- .../bindings/net/dsa/mediatek,mt7530.yaml | 43 ++++++++++++++++++- 1 file changed, 41 insertions(+), 2 deletions(-)
diff --git a/Documentation/devicetree/bindings/net/dsa/mediatek,mt7530.yaml b/Documentation/devicetree/bindings/net/dsa/mediatek,mt7530.yaml
index e29fb8693498..106c4087528d 100644
--- a/Documentation/devicetree/bindings/net/dsa/mediatek,mt7530.yaml
+++ b/Documentation/devicetree/bindings/net/dsa/mediatek,mt7530.yaml@@ -29,6 +29,12 @@ description: | and the switch registers are directly mapped into SoC's memory map rather than using MDIO. The DSA driver currently doesn't support MT7620 variants. + EcoNet EN751221 SoCs have a memory mapped MT7530 with 3x 10/100 PHYs and 1x + gigabit PHY. Some EN751221 chips such as EN7513G and EN7526G have a multi-chip + module implementation of the MT7530 as well as the on-die switch. In these + packages, the multi-chip module is connected to port 5 of the on-die switch + via a TRGMII link. + There is only the standalone version of MT7531. Port 5 on MT7530 supports various configurations:
@@ -111,6 +117,14 @@ properties: Built-in switch of the EcoNet EN7528 SoC const: econet,en7528-switch + - description: + Built-in switch of EcoNet EN751221 SoC + const: econet,en751221-switch + + - description: + Multi-chip module MT7530 in EN751221 SoC + const: econet,en751221 + reg: maxItems: 1
@@ -160,8 +174,8 @@ properties: mediatek,mcm: type: boolean description: - Used for MT7621AT, MT7621DAT, MT7621ST and MT7623AI SoCs which the MT7530 - switch is a part of the multi-chip module. + Used for MT7621AT, MT7621DAT, MT7621ST, MT7623AI and EN751221 SoCs which + the MT7530 switch is a part of the multi-chip module. reset-gpios: description: |
@@ -223,6 +237,20 @@ $defs: phy-mode: const: internal + mt7530-passthrough-dsa-port: + patternProperties: + "^(ethernet-)?ports$": + patternProperties: + "^(ethernet-)?port@[0-6]$": + if: + required: [ link ] + then: + properties: + reg: + const: 6 + phy-mode: + const: trgmii + mt7530-dsa-port: patternProperties: "^(ethernet-)?ports$":
@@ -330,6 +358,7 @@ allOf: - airoha,en7581-switch - airoha,an7583-switch - econet,en7528-switch + - econet,en751221-switch then: $ref: "#/$defs/builtin-dsa-port" properties:
@@ -337,6 +366,16 @@ allOf: mediatek,mcm: false reset-names: false + - if: + properties: + compatible: + enum: + - econet,en751221 + then: + $ref: "#/$defs/mt7530-passthrough-dsa-port" + required: + - mediatek,mcm + unevaluatedProperties: false examples:
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2.39.5