Re: [PATCH net-next v4 1/2] dt-bindings: net: dsa: lantiq,gswip: add MaxLinear R(G)MII slew rate
From: Rob Herring <robh@kernel.org>
Date: 2026-01-13 16:41:29
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On Wed, Jan 07, 2026 at 10:00:16AM +0100, A. Sverdlin wrote:
quoted hunk ↗ jump to hunk
From: Alexander Sverdlin <alexander.sverdlin@siemens.com> 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 <alexander.sverdlin@siemens.com> --- Changelog: v4: - separate properties for TXD and TXC pads ("maxlinear," prefix re-appears) v3: - use [pinctrl] standard "slew-rate" property as suggested by Rob https://lore.kernel.org/all/20251219204324.GA3881969-robh@kernel.org/ (local) v2: - unchanged .../devicetree/bindings/net/dsa/lantiq,gswip.yaml | 14 ++++++++++++++ 1 file changed, 14 insertions(+)diff --git a/Documentation/devicetree/bindings/net/dsa/lantiq,gswip.yaml b/Documentation/devicetree/bindings/net/dsa/lantiq,gswip.yaml index 205b683849a53..747106810cc17 100644 --- a/Documentation/devicetree/bindings/net/dsa/lantiq,gswip.yaml +++ b/Documentation/devicetree/bindings/net/dsa/lantiq,gswip.yaml@@ -106,6 +106,20 @@ patternProperties: unevaluatedProperties: false properties: + maxlinear,slew-rate-txc: + $ref: /schemas/types.yaml#/definitions/uint32 + enum: [0, 1]
default: 0
+ description: | + RMII/RGMII TX Clock Slew Rate:
blank line
+ 0: "Normal" + 1: "Slow"
Indent lists by 2 more spaces. Drop the quotes.
+ 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"
maxlinear,rmii-refclk-out:
type: boolean
description:
--
2.52.0