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[79.29.83.136]) by smtp.googlemail.com with ESMTPSA id 5b1f17b1804b1-49fe5dfa6a7sm266231245e9.12.2026.09.25.11.24.55 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 25 Sep 2026 11:24:57 -0700 (PDT) From: Christian Marangi To: Christian Marangi , Lee Jones , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Andrew Lunn , "David S. Miller" , Eric Dumazet , Jakub Kicinski , Paolo Abeni , Vladimir Oltean , Matthias Brugger , AngeloGioacchino Del Regno , "Chester A. Unal" , Daniel Golle , Heiner Kallweit , Russell King , Simon Horman , linux-arm-kernel@lists.infradead.org, linux-mediatek@lists.infradead.org, netdev@vger.kernel.org, mfd@lists.linux.dev, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org Subject: [PATCH net-next v23 3/9] dt-bindings: mfd: Document support for Airoha AN8855 Switch SoC Date: Fri, 25 Sep 2026 20:24:25 +0200 Message-ID: <20260925182435.21207-4-ansuelsmth@gmail.com> X-Mailer: git-send-email 2.55.0 In-Reply-To: <20260925182435.21207-1-ansuelsmth@gmail.com> References: <20260925182435.21207-1-ansuelsmth@gmail.com> Precedence: bulk X-Mailing-List: mfd@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Document support for Airoha AN8855 Switch SoC. This SoC expose various peripherals like an Ethernet Switch, a NVMEM provider and Ethernet PHYs. It does also support i2c and timers but those are not currently supported/used. Signed-off-by: Christian Marangi Reviewed-by: Rob Herring (Arm) --- .../bindings/mfd/airoha,an8855.yaml | 176 ++++++++++++++++++ 1 file changed, 176 insertions(+) create mode 100644 Documentation/devicetree/bindings/mfd/airoha,an8855.yaml diff --git a/Documentation/devicetree/bindings/mfd/airoha,an8855.yaml b/Documentation/devicetree/bindings/mfd/airoha,an8855.yaml new file mode 100644 index 000000000000..48127e956c96 --- /dev/null +++ b/Documentation/devicetree/bindings/mfd/airoha,an8855.yaml @@ -0,0 +1,176 @@ +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/mfd/airoha,an8855.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: Airoha AN8855 Switch SoC + +maintainers: + - Christian Marangi + +description: > + Airoha AN8855 Switch is a SoC that expose various peripherals like an + Ethernet Switch, a NVMEM provider and Ethernet PHYs. + + It does also support i2c and timers but those are not currently + supported/used. + +properties: + compatible: + const: airoha,an8855 + + reg: + maxItems: 1 + + reset-gpios: + maxItems: 1 + + efuse: + type: object + $ref: /schemas/nvmem/airoha,an8855-efuse.yaml + description: EFUSE exposed by the Airoha AN8855 SoC + + ethernet-switch: + type: object + $ref: /schemas/net/dsa/airoha,an8855-switch.yaml + description: Switch exposed by the Airoha AN8855 SoC + + mdio: + type: object + $ref: /schemas/net/mdio.yaml# + description: MDIO exposed by the Airoha AN8855 SoC + unevaluatedProperties: false + +required: + - compatible + - reg + - mdio + - ethernet-switch + +additionalProperties: false + +examples: + - | + #include + + mdio { + #address-cells = <1>; + #size-cells = <0>; + + soc@1 { + compatible = "airoha,an8855"; + reg = <1>; + + reset-gpios = <&pio 39 GPIO_ACTIVE_HIGH>; + + efuse { + compatible = "airoha,an8855-efuse"; + + #nvmem-cell-cells = <0>; + + nvmem-layout { + compatible = "fixed-layout"; + #address-cells = <1>; + #size-cells = <1>; + + shift_sel_port0_tx_a: shift-sel-port0-tx-a@c { + reg = <0xc 0x4>; + }; + + shift_sel_port0_tx_b: shift-sel-port0-tx-b@10 { + reg = <0x10 0x4>; + }; + + shift_sel_port0_tx_c: shift-sel-port0-tx-c@14 { + reg = <0x14 0x4>; + }; + + shift_sel_port0_tx_d: shift-sel-port0-tx-d@18 { + reg = <0x18 0x4>; + }; + + shift_sel_port1_tx_a: shift-sel-port1-tx-a@1c { + reg = <0x1c 0x4>; + }; + + shift_sel_port1_tx_b: shift-sel-port1-tx-b@20 { + reg = <0x20 0x4>; + }; + + shift_sel_port1_tx_c: shift-sel-port1-tx-c@24 { + reg = <0x24 0x4>; + }; + + shift_sel_port1_tx_d: shift-sel-port1-tx-d@28 { + reg = <0x28 0x4>; + }; + }; + }; + + ethernet-switch { + compatible = "airoha,an8855-switch"; + + ports { + #address-cells = <1>; + #size-cells = <0>; + + port@0 { + reg = <0>; + label = "lan1"; + phy-mode = "internal"; + phy-handle = <&internal_phy1>; + }; + + port@1 { + reg = <1>; + label = "lan2"; + phy-mode = "internal"; + phy-handle = <&internal_phy2>; + }; + + port@5 { + reg = <5>; + label = "cpu"; + ethernet = <&gmac0>; + phy-mode = "2500base-x"; + + fixed-link { + speed = <2500>; + full-duplex; + pause; + }; + }; + }; + }; + + mdio { + #address-cells = <1>; + #size-cells = <0>; + + internal_phy1: ethernet-phy@1 { + compatible = "ethernet-phy-idc0ff.0410", + "ethernet-phy-ieee802.3-c22"; + reg = <1>; + + nvmem-cells = <&shift_sel_port0_tx_a>, + <&shift_sel_port0_tx_b>, + <&shift_sel_port0_tx_c>, + <&shift_sel_port0_tx_d>; + nvmem-cell-names = "tx_a", "tx_b", "tx_c", "tx_d"; + }; + + internal_phy2: ethernet-phy@2 { + compatible = "ethernet-phy-idc0ff.0410", + "ethernet-phy-ieee802.3-c22"; + reg = <2>; + + nvmem-cells = <&shift_sel_port1_tx_a>, + <&shift_sel_port1_tx_b>, + <&shift_sel_port1_tx_c>, + <&shift_sel_port1_tx_d>; + nvmem-cell-names = "tx_a", "tx_b", "tx_c", "tx_d"; + }; + }; + }; + }; -- 2.55.0