From nobody Tue Feb 10 08:26:45 2026 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 1247D20E035; Fri, 7 Mar 2025 10:30:05 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1741343406; cv=none; b=brVYj6bbZ0TXDSiD64IVdYZMLXqU7KEqVsRslcX/BNxhB/kuRd3MZUTeNExqn5B4C3aHIpVc1KxY1dqsw0kiF91SJOkszZzKyEc67AsBVMvzbyNq59/W1CZ5wYw0TT6gnGAqE5hq8CZFpzn8VlxLNQ8HaatNwvm8AmG1CiCpuMQ= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1741343406; c=relaxed/simple; bh=u5PIwoXpE4i5c/yw91eUN1ZLY/9JIP8Pu8SR2ZLJDFc=; h=From:Date:Subject:MIME-Version:Content-Type:Message-Id:References: In-Reply-To:To:Cc; b=GAPEOqHQfeLYHRnRSnagUBsBBrtrId+i6/8eiLorj6wctaCKIAvTpzWRMwdKZfnhkMnhb4AnHga1DUXL/Onw7nwqxFrYvWKAVl5WwDkNFX2G95x/7aDh8o8SjQoMaKVVdhqA+pKDcz1ZQvFYyA4YLAa5/1cQ7WBom5N5dMVleEc= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=S1BbLK1f; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="S1BbLK1f" Received: by smtp.kernel.org (Postfix) with ESMTPS id 96C5BC4CEE5; Fri, 7 Mar 2025 10:30:05 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1741343405; bh=u5PIwoXpE4i5c/yw91eUN1ZLY/9JIP8Pu8SR2ZLJDFc=; h=From:Date:Subject:References:In-Reply-To:To:Cc:Reply-To:From; b=S1BbLK1fK1YHOwwy904m8XHDqOH5joR/8QUmzsjejiCoZGNQuEYpp1aRoBedzrHNV t9iFE+fXdCG/KKlQclVZltdW8oQdq1ol3Sol89N6Gaxlrr/odmPVPTq/ofPbqeOR36 Z7jWMarayaCw1sNTnCzvE44Xp2k8YGx3UrwKTdpllahzYX5/A2PWuvxowh2fd6LwwN Gv0U5fTo+qPgTqRqFRD4UsqsebXmWLUulD4sSSJAPNnBeCNcrPIu8vs5X6cO9cHSUG q+Hu47ROvHroxTP+B/mM4u+imbWAdR6k9KkiP3hsTfsORAMct5jEul2zT6W91/P1Wc QgtZZANh5Xctg== Received: from aws-us-west-2-korg-lkml-1.web.codeaurora.org (localhost.localdomain [127.0.0.1]) by smtp.lore.kernel.org (Postfix) with ESMTP id 828FDC282DE; Fri, 7 Mar 2025 10:30:05 +0000 (UTC) From: Dimitri Fedrau via B4 Relay Date: Fri, 07 Mar 2025 11:30:01 +0100 Subject: [PATCH net-next 1/3] dt-bindings: net: ethernet-phy: add property mac-series-termination-ohms Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable Message-Id: <20250307-dp83822-mac-impedance-v1-1-bdd85a759b45@liebherr.com> References: <20250307-dp83822-mac-impedance-v1-0-bdd85a759b45@liebherr.com> In-Reply-To: <20250307-dp83822-mac-impedance-v1-0-bdd85a759b45@liebherr.com> To: Andrew Lunn , Heiner Kallweit , Russell King , "David S. Miller" , Eric Dumazet , Jakub Kicinski , Paolo Abeni , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Florian Fainelli Cc: netdev@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, Dimitri Fedrau , Dimitri Fedrau X-Mailer: b4 0.14.2 X-Developer-Signature: v=1; a=ed25519-sha256; t=1741343404; l=1172; i=dimitri.fedrau@liebherr.com; s=20241202; h=from:subject:message-id; bh=ZGmwSQ66d6eh0REzIdZ/UIEpJ5tg0qml7Jgb30CA/sI=; b=saFDSQW7Jz8/Enl1FHon3rf594hns5gXEUgOWurxrpPav7KflToUD4W5QlRvITNlq/ZnSUojD +mRZ/XT/QMcAiir3nldKVFiiC1AKLJyVnxb8wl+3U6i439k7thfBH91 X-Developer-Key: i=dimitri.fedrau@liebherr.com; a=ed25519; pk=rT653x09JSQvotxIqQl4/XiI4AOiBZrdOGvxDUbb5m8= X-Endpoint-Received: by B4 Relay for dimitri.fedrau@liebherr.com/20241202 with auth_id=290 X-Original-From: Dimitri Fedrau Reply-To: dimitri.fedrau@liebherr.com From: Dimitri Fedrau Add property mac-series-termination-ohms in the device tree bindings for selecting the resistance value of the builtin series termination resistors of the PHY. Changing the resistance to an appropriate value can reduce signal reflections and therefore improve signal quality. Signed-off-by: Dimitri Fedrau --- Documentation/devicetree/bindings/net/ethernet-phy.yaml | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/Documentation/devicetree/bindings/net/ethernet-phy.yaml b/Docu= mentation/devicetree/bindings/net/ethernet-phy.yaml index 824bbe4333b7ed95cc39737d3c334a20aa890f01..4a710315a83ccf15bfc210ae432= ae988cf31e04c 100644 --- a/Documentation/devicetree/bindings/net/ethernet-phy.yaml +++ b/Documentation/devicetree/bindings/net/ethernet-phy.yaml @@ -238,6 +238,11 @@ properties: peak-to-peak specified in ANSI X3.263. When omitted, the PHYs default will be left as is. =20 + mac-series-termination-ohms: + description: + The resistance value of the series termination resistor. When omitte= d, the + PHYs default will be left as is. + leds: type: object =20 --=20 2.39.5