From 4cc265663da54944b22fa012e506592eab146388 Mon Sep 17 00:00:00 2001 From: Alexander Sverdlin Date: Wed, 14 Jan 2026 11:45:03 +0100 Subject: [PATCH] dt-bindings: net: dsa: lantiq,gswip: add MaxLinear R(G)MII slew rate Add new maxlinear,slew-rate-txc and maxlinear,slew-rate-txd uint32 properties. The properties are only applicable for ports in R(G)MII mode and allow for slew rate reduction in comparison to "normal" default configuration with the purpose to reduce radiated emissions. Signed-off-by: Alexander Sverdlin Reviewed-by: Rob Herring (Arm) Link: https://patch.msgid.link/20260114104509.618984-2-alexander.sverdlin@siemens.com Signed-off-by: Jakub Kicinski --- .../bindings/net/dsa/lantiq,gswip.yaml | 22 +++++++++++++++++++ 1 file changed, 22 insertions(+) diff --git a/Documentation/devicetree/bindings/net/dsa/lantiq,gswip.yaml b/Documentation/devicetree/bindings/net/dsa/lantiq,gswip.yaml index 205b683849a53..37d64b8a76ac7 100644 --- a/Documentation/devicetree/bindings/net/dsa/lantiq,gswip.yaml +++ b/Documentation/devicetree/bindings/net/dsa/lantiq,gswip.yaml @@ -106,6 +106,28 @@ patternProperties: unevaluatedProperties: false properties: + maxlinear,slew-rate-txc: + $ref: /schemas/types.yaml#/definitions/uint32 + enum: [0, 1] + description: | + RMII/RGMII TX Clock Slew Rate: + + 0: Normal + 1: Slow + + If not present, the configuration made by the switch bootloader is + preserved. + maxlinear,slew-rate-txd: + $ref: /schemas/types.yaml#/definitions/uint32 + enum: [0, 1] + description: | + RMII/RGMII TX Non-Clock PAD Slew Rate: + + 0: Normal + 1: Slow + + If not present, the configuration made by the switch bootloader is + preserved. maxlinear,rmii-refclk-out: type: boolean description: -- 2.47.3