[PATCH net-next v2 1/3] dt-bindings: net: realtek,rtl9301-mdio: Add clock-frequency
From: Markus Stockhausen <hidden>
Date: 2026-09-06 08:20:24
Also in:
netdev
Subsystem:
networking drivers, open firmware and flattened device tree bindings, the rest · Maintainers:
Andrew Lunn, "David S. Miller", Eric Dumazet, Jakub Kicinski, Paolo Abeni, Rob Herring, Krzysztof Kozlowski, Conor Dooley, Linus Torvalds
The Realtek Otto Switch ethernet MDIO controller supports different MDC speeds ranging from 1.25MHz to 10MHz. Document the clock-frequency attribute for the device tree. There is neither an official documentation nor any obvious registers that indicate a dependency to one of the hardware clocks. The usable setup bits are more like hardcoded values than dividers. Without further details do not add a clock reference. Signed-off-by: Markus Stockhausen <redacted> --- .../bindings/net/realtek,rtl9301-mdio.yaml | 40 +++++++++++++++++++ 1 file changed, 40 insertions(+)
diff --git a/Documentation/devicetree/bindings/net/realtek,rtl9301-mdio.yaml b/Documentation/devicetree/bindings/net/realtek,rtl9301-mdio.yaml
index 67e0b23a8470..88502d017eed 100644
--- a/Documentation/devicetree/bindings/net/realtek,rtl9301-mdio.yaml
+++ b/Documentation/devicetree/bindings/net/realtek,rtl9301-mdio.yaml@@ -56,6 +56,9 @@ patternProperties: reg: maxItems: 1 + clock-frequency: + default: 2500000 + required: - reg
@@ -71,6 +74,43 @@ required: - compatible - reg +allOf: + - if: + properties: + compatible: + contains: + enum: + - realtek,rtl8380-mdio + - realtek,rtl8381-mdio + - realtek,rtl8382-mdio + then: + patternProperties: + '^mdio-bus@[0-3]$': + properties: + clock-frequency: + enum: [2500000, 10000000] + - if: + properties: + compatible: + contains: + enum: + - realtek,rtl8391-mdio + - realtek,rtl8392-mdio + - realtek,rtl8393-mdio + - realtek,rtl9301-mdio + - realtek,rtl9302b-mdio + - realtek,rtl9302c-mdio + - realtek,rtl9303-mdio + - realtek,rtl9311-mdio + - realtek,rtl9312-mdio + - realtek,rtl9313-mdio + then: + patternProperties: + '^mdio-bus@[0-3]$': + properties: + clock-frequency: + enum: [1250000, 2500000, 5000000] + unevaluatedProperties: false examples:
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2.55.0