[PATCH net-next v3 1/4] dt-bindings: net: ftgmac100: Add delay properties for AST2600
From: Jacky Chou <jacky_chou@aspeedtech.com>
Date: 2025-11-03 07:39:42
Also in:
linux-arm-kernel, linux-aspeed, linux-devicetree, lkml
Subsystem:
networking drivers, open firmware and flattened device tree bindings, the rest · Maintainers:
Andrew Lunn, "David S. Miller", Eric Dumazet, Jakub Kicinski, Paolo Abeni, Rob Herring, Krzysztof Kozlowski, Conor Dooley, Linus Torvalds
Create the new compatibles to identify AST2600 MAC0/1 and MAC3/4. Add conditional schema constraints for Aspeed AST2600 MAC controllers: - For "aspeed,ast2600-mac01", require rx/tx-internal-delay-ps properties with 45ps step. - For "aspeed,ast2600-mac23", require rx/tx-internal-delay-ps properties with 250ps step. - Both require the "scu" property. Other compatible values remain unrestricted. Signed-off-by: Jacky Chou <jacky_chou@aspeedtech.com> --- .../devicetree/bindings/net/faraday,ftgmac100.yaml | 50 ++++++++++++++++++++++ 1 file changed, 50 insertions(+)
diff --git a/Documentation/devicetree/bindings/net/faraday,ftgmac100.yaml b/Documentation/devicetree/bindings/net/faraday,ftgmac100.yaml
index d14410018bcf..de646e7e3bca 100644
--- a/Documentation/devicetree/bindings/net/faraday,ftgmac100.yaml
+++ b/Documentation/devicetree/bindings/net/faraday,ftgmac100.yaml@@ -19,6 +19,12 @@ properties: - aspeed,ast2500-mac - aspeed,ast2600-mac - const: faraday,ftgmac100 + - items: + - enum: + - aspeed,ast2600-mac01 + - aspeed,ast2600-mac23 + - const: aspeed,ast2600-mac + - const: faraday,ftgmac100 reg: maxItems: 1
@@ -69,6 +75,12 @@ properties: mdio: $ref: /schemas/net/mdio.yaml# + scu: + $ref: /schemas/types.yaml#/definitions/phandle + description: + Phandle to the SCU (System Control Unit) syscon node for Aspeed platform. + This reference is used by the MAC controller to configure the RGMII delays. + required: - compatible - reg
@@ -88,6 +100,44 @@ allOf: else: properties: resets: false + - if: + properties: + compatible: + contains: + const: aspeed,ast2600-mac01 + then: + properties: + rx-internal-delay-ps: + minimum: 0 + maximum: 1395 + multipleOf: 45 + tx-internal-delay-ps: + minimum: 0 + maximum: 1395 + multipleOf: 45 + required: + - scu + - rx-internal-delay-ps + - tx-internal-delay-ps + - if: + properties: + compatible: + contains: + const: aspeed,ast2600-mac23 + then: + properties: + rx-internal-delay-ps: + minimum: 0 + maximum: 7750 + multipleOf: 250 + tx-internal-delay-ps: + minimum: 0 + maximum: 7750 + multipleOf: 250 + required: + - scu + - rx-internal-delay-ps + - tx-internal-delay-ps unevaluatedProperties: false
--
2.34.1