| # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) |
| %YAML 1.2 |
| --- |
| $id: http://devicetree.org/schemas/net/dsa/realtek.yaml# |
| $schema: http://devicetree.org/meta-schemas/core.yaml# |
| |
| title: Realtek switches for unmanaged switches |
| |
| allOf: |
| - $ref: dsa.yaml#/$defs/ethernet-ports |
| |
| maintainers: |
| - Linus Walleij <linus.walleij@linaro.org> |
| |
| description: |
| Realtek advertises these chips as fast/gigabit switches or unmanaged |
| switches. They can be controlled using different interfaces, like SMI, |
| MDIO or SPI. |
| |
| The SMI "Simple Management Interface" is a two-wire protocol using |
| bit-banged GPIO that while it reuses the MDIO lines MCK and MDIO does |
| not use the MDIO protocol. This binding defines how to specify the |
| SMI-based Realtek devices. The realtek-smi driver is a platform driver |
| and it must be inserted inside a platform node. |
| |
| The MDIO-connected switches use MDIO protocol to access their registers. |
| The realtek-mdio driver is an MDIO driver and it must be inserted inside |
| an MDIO node. |
| |
| The compatible string is only used to identify which (silicon) family the |
| switch belongs to. Roughly speaking, a family is any set of Realtek switches |
| whose chip identification register(s) have a common location and semantics. |
| The different models in a given family can be automatically disambiguated by |
| parsing the chip identification register(s) according to the given family, |
| avoiding the need for a unique compatible string for each model. |
| |
| properties: |
| compatible: |
| enum: |
| - realtek,rtl8365mb |
| - realtek,rtl8366rb |
| description: | |
| realtek,rtl8365mb: |
| Use with models RTL8363NB, RTL8363NB-VB, RTL8363SC, RTL8363SC-VB, |
| RTL8364NB, RTL8364NB-VB, RTL8365MB, RTL8366SC, RTL8367RB-VB, RTL8367S, |
| RTL8367SB, RTL8370MB, RTL8310SR |
| realtek,rtl8366rb: |
| Use with models RTL8366RB, RTL8366S |
| |
| mdc-gpios: |
| description: GPIO line for the MDC clock line. |
| maxItems: 1 |
| |
| mdio-gpios: |
| description: GPIO line for the MDIO data line. |
| maxItems: 1 |
| |
| reset-gpios: |
| description: GPIO to be used to reset the whole device |
| maxItems: 1 |
| |
| resets: |
| maxItems: 1 |
| |
| realtek,disable-leds: |
| type: boolean |
| description: | |
| if the LED drivers are not used in the hardware design, |
| this will disable them so they are not turned on |
| and wasting power. |
| |
| interrupt-controller: |
| type: object |
| additionalProperties: false |
| |
| description: | |
| This defines an interrupt controller with an IRQ line (typically |
| a GPIO) that will demultiplex and handle the interrupt from the single |
| interrupt line coming out of one of the Realtek switch chips. It most |
| importantly provides link up/down interrupts to the PHY blocks inside |
| the ASIC. |
| |
| properties: |
| |
| interrupt-controller: true |
| |
| interrupts: |
| maxItems: 1 |
| description: |
| A single IRQ line from the switch, either active LOW or HIGH |
| |
| '#address-cells': |
| const: 0 |
| |
| '#interrupt-cells': |
| const: 1 |
| |
| required: |
| - interrupt-controller |
| - '#address-cells' |
| - '#interrupt-cells' |
| |
| mdio: |
| $ref: /schemas/net/mdio.yaml# |
| unevaluatedProperties: false |
| |
| properties: |
| compatible: |
| const: realtek,smi-mdio |
| |
| if: |
| required: |
| - reg |
| |
| then: |
| $ref: /schemas/spi/spi-peripheral-props.yaml# |
| not: |
| required: |
| - mdc-gpios |
| - mdio-gpios |
| - mdio |
| |
| properties: |
| mdc-gpios: false |
| mdio-gpios: false |
| mdio: false |
| |
| else: |
| required: |
| - mdc-gpios |
| - mdio-gpios |
| - mdio |
| |
| required: |
| - compatible |
| |
| # - mdc-gpios |
| # - mdio-gpios |
| # - reset-gpios |
| # - mdio |
| |
| unevaluatedProperties: false |
| |
| examples: |
| - | |
| #include <dt-bindings/gpio/gpio.h> |
| #include <dt-bindings/interrupt-controller/irq.h> |
| |
| platform { |
| switch { |
| compatible = "realtek,rtl8366rb"; |
| /* 22 = MDIO (has input reads), 21 = MDC (clock, output only) */ |
| mdc-gpios = <&gpio0 21 GPIO_ACTIVE_HIGH>; |
| mdio-gpios = <&gpio0 22 GPIO_ACTIVE_HIGH>; |
| reset-gpios = <&gpio0 14 GPIO_ACTIVE_LOW>; |
| |
| switch_intc1: interrupt-controller { |
| /* GPIO 15 provides the interrupt */ |
| interrupt-parent = <&gpio0>; |
| interrupts = <15 IRQ_TYPE_LEVEL_LOW>; |
| interrupt-controller; |
| #address-cells = <0>; |
| #interrupt-cells = <1>; |
| }; |
| |
| ports { |
| #address-cells = <1>; |
| #size-cells = <0>; |
| port@0 { |
| reg = <0>; |
| label = "lan0"; |
| phy-handle = <&phy0>; |
| }; |
| port@1 { |
| reg = <1>; |
| label = "lan1"; |
| phy-handle = <&phy1>; |
| }; |
| port@2 { |
| reg = <2>; |
| label = "lan2"; |
| phy-handle = <&phy2>; |
| }; |
| port@3 { |
| reg = <3>; |
| label = "lan3"; |
| phy-handle = <&phy3>; |
| }; |
| port@4 { |
| reg = <4>; |
| label = "wan"; |
| phy-handle = <&phy4>; |
| }; |
| port@5 { |
| reg = <5>; |
| ethernet = <&gmac0>; |
| phy-mode = "rgmii"; |
| fixed-link { |
| speed = <1000>; |
| full-duplex; |
| }; |
| }; |
| }; |
| |
| mdio { |
| compatible = "realtek,smi-mdio"; |
| #address-cells = <1>; |
| #size-cells = <0>; |
| |
| phy0: ethernet-phy@0 { |
| reg = <0>; |
| interrupt-parent = <&switch_intc1>; |
| interrupts = <0>; |
| }; |
| phy1: ethernet-phy@1 { |
| reg = <1>; |
| interrupt-parent = <&switch_intc1>; |
| interrupts = <1>; |
| }; |
| phy2: ethernet-phy@2 { |
| reg = <2>; |
| interrupt-parent = <&switch_intc1>; |
| interrupts = <2>; |
| }; |
| phy3: ethernet-phy@3 { |
| reg = <3>; |
| interrupt-parent = <&switch_intc1>; |
| interrupts = <3>; |
| }; |
| phy4: ethernet-phy@4 { |
| reg = <4>; |
| interrupt-parent = <&switch_intc1>; |
| interrupts = <12>; |
| }; |
| }; |
| }; |
| }; |
| |
| - | |
| #include <dt-bindings/gpio/gpio.h> |
| #include <dt-bindings/interrupt-controller/irq.h> |
| |
| platform { |
| switch { |
| compatible = "realtek,rtl8365mb"; |
| mdc-gpios = <&gpio1 16 GPIO_ACTIVE_HIGH>; |
| mdio-gpios = <&gpio1 17 GPIO_ACTIVE_HIGH>; |
| reset-gpios = <&gpio5 0 GPIO_ACTIVE_LOW>; |
| |
| switch_intc2: interrupt-controller { |
| interrupt-parent = <&gpio5>; |
| interrupts = <1 IRQ_TYPE_LEVEL_LOW>; |
| interrupt-controller; |
| #address-cells = <0>; |
| #interrupt-cells = <1>; |
| }; |
| |
| ports { |
| #address-cells = <1>; |
| #size-cells = <0>; |
| port@0 { |
| reg = <0>; |
| label = "swp0"; |
| phy-handle = <ðphy0>; |
| }; |
| port@1 { |
| reg = <1>; |
| label = "swp1"; |
| phy-handle = <ðphy1>; |
| }; |
| port@2 { |
| reg = <2>; |
| label = "swp2"; |
| phy-handle = <ðphy2>; |
| }; |
| port@3 { |
| reg = <3>; |
| label = "swp3"; |
| phy-handle = <ðphy3>; |
| }; |
| port@6 { |
| reg = <6>; |
| ethernet = <&fec1>; |
| phy-mode = "rgmii"; |
| tx-internal-delay-ps = <2000>; |
| rx-internal-delay-ps = <2000>; |
| |
| fixed-link { |
| speed = <1000>; |
| full-duplex; |
| pause; |
| }; |
| }; |
| }; |
| |
| mdio { |
| compatible = "realtek,smi-mdio"; |
| #address-cells = <1>; |
| #size-cells = <0>; |
| |
| ethphy0: ethernet-phy@0 { |
| reg = <0>; |
| interrupt-parent = <&switch_intc2>; |
| interrupts = <0>; |
| }; |
| ethphy1: ethernet-phy@1 { |
| reg = <1>; |
| interrupt-parent = <&switch_intc2>; |
| interrupts = <1>; |
| }; |
| ethphy2: ethernet-phy@2 { |
| reg = <2>; |
| interrupt-parent = <&switch_intc2>; |
| interrupts = <2>; |
| }; |
| ethphy3: ethernet-phy@3 { |
| reg = <3>; |
| interrupt-parent = <&switch_intc2>; |
| interrupts = <3>; |
| }; |
| }; |
| }; |
| }; |
| |
| - | |
| #include <dt-bindings/gpio/gpio.h> |
| #include <dt-bindings/interrupt-controller/irq.h> |
| |
| mdio { |
| #address-cells = <1>; |
| #size-cells = <0>; |
| |
| switch@29 { |
| compatible = "realtek,rtl8365mb"; |
| reg = <29>; |
| |
| reset-gpios = <&gpio2 20 GPIO_ACTIVE_LOW>; |
| |
| switch_intc3: interrupt-controller { |
| interrupt-parent = <&gpio0>; |
| interrupts = <11 IRQ_TYPE_EDGE_FALLING>; |
| interrupt-controller; |
| #address-cells = <0>; |
| #interrupt-cells = <1>; |
| }; |
| |
| ports { |
| #address-cells = <1>; |
| #size-cells = <0>; |
| |
| port@0 { |
| reg = <0>; |
| label = "lan4"; |
| }; |
| |
| port@1 { |
| reg = <1>; |
| label = "lan3"; |
| }; |
| |
| port@2 { |
| reg = <2>; |
| label = "lan2"; |
| }; |
| |
| port@3 { |
| reg = <3>; |
| label = "lan1"; |
| }; |
| |
| port@4 { |
| reg = <4>; |
| label = "wan"; |
| }; |
| |
| port@7 { |
| reg = <7>; |
| ethernet = <ðernet>; |
| phy-mode = "rgmii"; |
| tx-internal-delay-ps = <2000>; |
| rx-internal-delay-ps = <0>; |
| |
| fixed-link { |
| speed = <1000>; |
| full-duplex; |
| }; |
| }; |
| }; |
| }; |
| }; |
