On Sat, Mar 15, 2025 at 04:43:45PM +0100, Christian Marangi wrote: > 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 <ansuelsmth@xxxxxxxxx> > --- > .../bindings/mfd/airoha,an8855.yaml | 182 ++++++++++++++++++ > MAINTAINERS | 1 + > 2 files changed, 183 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..a59a23056b3a > --- /dev/null > +++ b/Documentation/devicetree/bindings/mfd/airoha,an8855.yaml > @@ -0,0 +1,182 @@ > +# 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 <ansuelsmth@xxxxxxxxx> > + > +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: true > + > + efuse: > + type: object > + $ref: /schemas/nvmem/airoha,an8855-efuse.yaml > + description: > + EFUSE exposed by the Airoha AN8855 Switch. This child node definition > + should follow the bindings specified in > + Documentation/devicetree/bindings/nvmem/airoha,an8855-efuse.yaml No need to list the schema twice. Drop the 2nd sentence. > + > + ethernet-switch: > + type: object > + $ref: /schemas/net/dsa/airoha,an8855-switch.yaml > + description: > + Switch exposed by the Airoha AN8855 Switch. This child node definition > + should follow the bindings specified in > + Documentation/devicetree/bindings/net/dsa/airoha,an8855-switch.yaml ditto > + > + mdio: > + type: object > + $ref: /schemas/net/airoha,an8855-mdio.yaml > + description: > + MDIO exposed by the Airoha AN8855 Switch. This child node definition > + should follow the bindings specified in > + Documentation/devicetree/bindings/net/airoha,an8855-mdio.yaml ditto > + > +required: > + - compatible > + - reg The child nodes are optional? > + > +additionalProperties: false > + > +examples: > + - | > + #include <dt-bindings/gpio/gpio.h> > + > + mdio { > + #address-cells = <1>; > + #size-cells = <0>; > + > + soc@1 { > + compatible = "airoha,an8855"; > + reg = <1>; > + > + reset-gpios = <&pio 39 0>; > + > + 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 { > + compatible = "airoha,an8855-mdio"; > + #address-cells = <1>; > + #size-cells = <0>; > + > + internal_phy1: phy@1 { > + compatible = "ethernet-phy-idc0ff.0410", > + "ethernet-phy-ieee802.3-c45"; > + 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: phy@2 { > + compatible = "ethernet-phy-idc0ff.0410", > + "ethernet-phy-ieee802.3-c45"; > + 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"; > + }; > + }; > + }; > + }; > diff --git a/MAINTAINERS b/MAINTAINERS > index 45f4bb8deb0d..65709e47adc7 100644 > --- a/MAINTAINERS > +++ b/MAINTAINERS > @@ -725,6 +725,7 @@ L: linux-arm-kernel@xxxxxxxxxxxxxxxxxxx (moderated for non-subscribers) > L: linux-mediatek@xxxxxxxxxxxxxxxxxxx (moderated for non-subscribers) > L: netdev@xxxxxxxxxxxxxxx > S: Maintained > +F: Documentation/devicetree/bindings/mfd/airoha,an8855.yaml > F: Documentation/devicetree/bindings/net/airoha,an8855-mdio.yaml > F: Documentation/devicetree/bindings/net/airoha,an8855-phy.yaml > F: Documentation/devicetree/bindings/net/dsa/airoha,an8855-switch.yaml > -- > 2.48.1 >
