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https://git.kernel.org/pub/scm/linux/kernel/git/chenhuacai/linux-loongson
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96757457da
Add dtschema for the MDIO controller found in the RTL9300 Ethernet switch. The controller is slightly unusual in that direct MDIO communication is not possible. We model the MDIO controller with the MDIO buses as child nodes and the PHYs as children of the buses. The mapping of switch port number to MDIO bus/addr requires the ethernet-ports sibling to provide the mapping via the phy-handle property. Signed-off-by: Chris Packham <chris.packham@alliedtelesis.co.nz> Reviewed-by: Rob Herring (Arm) <robh@kernel.org> Link: https://patch.msgid.link/20250218195216.1034220-4-chris.packham@alliedtelesis.co.nz Signed-off-by: Jakub Kicinski <kuba@kernel.org>
87 lines
1.6 KiB
YAML
87 lines
1.6 KiB
YAML
# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
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%YAML 1.2
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---
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$id: http://devicetree.org/schemas/net/realtek,rtl9301-mdio.yaml#
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$schema: http://devicetree.org/meta-schemas/core.yaml#
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title: Realtek RTL9300 MDIO Controller
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maintainers:
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- Chris Packham <chris.packham@alliedtelesis.co.nz>
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properties:
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compatible:
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oneOf:
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- items:
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- enum:
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- realtek,rtl9302b-mdio
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- realtek,rtl9302c-mdio
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- realtek,rtl9303-mdio
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- const: realtek,rtl9301-mdio
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- const: realtek,rtl9301-mdio
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'#address-cells':
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const: 1
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'#size-cells':
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const: 0
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reg:
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maxItems: 1
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patternProperties:
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'^mdio-bus@[0-3]$':
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$ref: mdio.yaml#
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properties:
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reg:
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maxItems: 1
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required:
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- reg
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patternProperties:
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'^ethernet-phy@[a-f0-9]+$':
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type: object
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$ref: ethernet-phy.yaml#
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unevaluatedProperties: false
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unevaluatedProperties: false
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required:
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- compatible
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- reg
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unevaluatedProperties: false
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examples:
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- |
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mdio-controller@ca00 {
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compatible = "realtek,rtl9301-mdio";
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reg = <0xca00 0x200>;
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#address-cells = <1>;
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#size-cells = <0>;
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mdio-bus@0 {
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reg = <0>;
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#address-cells = <1>;
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#size-cells = <0>;
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ethernet-phy@0 {
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compatible = "ethernet-phy-ieee802.3-c45";
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reg = <0>;
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};
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};
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mdio-bus@1 {
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reg = <1>;
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#address-cells = <1>;
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#size-cells = <0>;
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ethernet-phy@0 {
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compatible = "ethernet-phy-ieee802.3-c45";
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reg = <0>;
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};
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};
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};
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