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[93.34.88.225]) by smtp.googlemail.com with ESMTPSA id ffacd0b85a97d-3a568b74313sm13500439f8f.96.2025.06.17.02.17.20 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 17 Jun 2025 02:17:21 -0700 (PDT) From: Christian Marangi To: Andrew Lunn , "David S. Miller" , Eric Dumazet , Jakub Kicinski , Paolo Abeni , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Heiner Kallweit , Russell King , Philipp Zabel , Christian Marangi , netdev@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org Subject: [net-next PATCH v2 1/2] dt-bindings: net: Document support for Airoha AN7583 MDIO Controller Date: Tue, 17 Jun 2025 11:16:52 +0200 Message-ID: <20250617091655.10832-1-ansuelsmth@gmail.com> X-Mailer: git-send-email 2.48.1 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Airoha AN7583 SoC have 3 different MDIO Controller. One comes from the intergated Switch based on MT7530. The other 2 live under the SCU register and expose 2 dedicated MDIO controller. Document the schema for the 2 dedicated MDIO controller. Each MDIO controller can be independently reset with the SoC reset line. Each MDIO controller have a dedicated clock configured to 2.5MHz by default to follow MDIO bus IEEE 802.3 standard. Signed-off-by: Christian Marangi --- Changes v2: - Out of RFC - Rework the schema to MDIO child nodes with dedicated reg - Add clock property (required for clock-frequency) - Make reset property mandatory .../bindings/net/airoha,an7583-mdio.yaml | 59 +++++++++++++++++++ 1 file changed, 59 insertions(+) create mode 100644 Documentation/devicetree/bindings/net/airoha,an7583-mdio.yaml diff --git a/Documentation/devicetree/bindings/net/airoha,an7583-mdio.yaml b/Documentation/devicetree/bindings/net/airoha,an7583-mdio.yaml new file mode 100644 index 000000000000..3e7e68ec1560 --- /dev/null +++ b/Documentation/devicetree/bindings/net/airoha,an7583-mdio.yaml @@ -0,0 +1,59 @@ +# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/net/airoha,an7583-mdio.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: Airoha AN7583 Dedicated MDIO Controller + +maintainers: + - Christian Marangi + +description: + Airoha AN7583 SoC have 3 different MDIO Controller. + + One comes from the intergated Switch based on MT7530. + + The other 2 (that this schema describe) live under the SCU + register supporting both C22 and C45 PHYs. + +$ref: mdio.yaml# + +properties: + compatible: + const: airoha,an7583-mdio + + reg: + enum: [0xc8, 0xcc] + + clocks: + maxItems: 1 + + resets: + maxItems: 1 + + clock-frequency: + default: 2500000 + +required: + - compatible + - reg + - clocks + - resets + +unevaluatedProperties: false + +examples: + - | + system-controller { + #address-cells = <1>; + #size-cells = <0>; + + mdio-bus@c8 { + compatible = "airoha,an7583-mdio"; + reg = <0xc8>; + + clocks = <&scu>; + resets = <&scu>; + }; + }; -- 2.48.1