From nobody Sun Feb 8 04:45:54 2026 Received: from mout02.posteo.de (mout02.posteo.de [185.67.36.66]) (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 76D131A3029 for ; Fri, 12 Dec 2025 22:02:27 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=185.67.36.66 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1765576949; cv=none; b=by8gcjMAP9j3leAG+SuSygbAUOD26PTW219QMfhUl3PKYcRVElING+JA8kWFwEw5v5ilhY63LXOoWEA7lKAJSVYixI0LEsJLf4+IL9qQwFy3219sx2G8nIrG9w1dF3Njqfht+8uSvBlJLOdiY+kMZFoX2/OspLlSB76J/wGkj8I= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1765576949; c=relaxed/simple; bh=Rk07fN+keSwEuE0/GjnLh+Wu8+V9WvTvrMsz6G+wAhU=; h=From:To:Cc:Subject:Date:Message-ID:MIME-Version; b=e9vWbNSs1OdjlQ89CDSvHa/zlSBd/lnhv/0I0IQ8mo1y0+S0h/D8GBByHf4Waigkg1osIkzRj9tulX03fI495sVqIWtEWxuUQPVJ1Cdqmt64quDBh02I6gkXn1W9VbY4OClE/rkupv0GQLNvPkNH787a4HxNGphYuDc9imMfjPA= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=posteo.de; spf=pass smtp.mailfrom=posteo.de; dkim=pass (2048-bit key) header.d=posteo.de header.i=@posteo.de header.b=OOCVLMyJ; arc=none smtp.client-ip=185.67.36.66 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=posteo.de Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=posteo.de Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=posteo.de header.i=@posteo.de header.b="OOCVLMyJ" Received: from submission (posteo.de [185.67.36.169]) by mout02.posteo.de (Postfix) with ESMTPS id 11369240101 for ; Fri, 12 Dec 2025 23:02:24 +0100 (CET) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=posteo.de; s=2017; t=1765576945; bh=750ln4d5IZ+5twsG5klcrtotTQHvrYbgJe5RP9Qdpfk=; h=From:To:Cc:Subject:Date:Message-ID:MIME-Version: Content-Transfer-Encoding:From; b=OOCVLMyJ27bdtBJOhWq2K+khLTGgFuAebQ7Fp0HIbBinl5PGTt/vFBZam9hbHF51g Vr8yeRC1bCTdksm1E9fbSXhHfnnAmxmcp33vDVYUZ9YoVnnfcbQTHwsEJp8UD+NeFs yh03FKdeXvlpPbrVN+Q8Tun1jgq9SXpdPlt2Wi56NeEjC5dZ5xolfM/jFlB9hzGZmW /us2e1ohgO13JcncZ0A01CKHZW6MemwTiCOtBWLXKO21OIsCpcvFYn1u4XimQcWdJg PCij4Ng3xcihBMT3nzOOPbk7BLM1UjW9X/ysGTovU92ZdugRqoz2ZO19ZGQ+9mfALO 9DppwCkQ1BT+Q== Received: from customer (localhost [127.0.0.1]) by submission (posteo.de) with ESMTPSA id 4dSk2l69Nsz9rxL; Fri, 12 Dec 2025 23:02:23 +0100 (CET) From: Adrian Kossmann To: Rob Herring , Krzysztof Kozlowski , Conor Dooley , Heiko Stuebner Cc: Adrian Kossmann , devicetree@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-rockchip@lists.infradead.org, linux-kernel@vger.kernel.org Subject: [PATCH v2] arm64: dts: rockchip: Adjust RGMII TXD/RXD delays for the Rock Pi E Date: Fri, 12 Dec 2025 22:02:24 +0000 Message-ID: <20251212220151.574860-1-adrian.kossmann@posteo.de> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" Current RGMII TXD/RXD delay results in link instability under load, with throughput eventually dropping to zero. Adjust the RGMII TXD/RXD delay values for stable link under load and stable Gigabit throughput Signed-off-by: Adrian Kossmann --- Changes in v2: - Changed the patch subject as the last one contained incorrect changes - Drop incorrect PHY compatible string change from v1 - Adjustments to RGMII RX/TX delay values - Link to v1: https://lore.kernel.org/linux-rockchip/20251209210658.458506-= 2-adrian.kossmann@posteo.de/ arch/arm64/boot/dts/rockchip/rk3328-rock-pi-e.dts | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/arch/arm64/boot/dts/rockchip/rk3328-rock-pi-e.dts b/arch/arm64= /boot/dts/rockchip/rk3328-rock-pi-e.dts index a4bdd87d0729..29ff0b8b8f18 100644 --- a/arch/arm64/boot/dts/rockchip/rk3328-rock-pi-e.dts +++ b/arch/arm64/boot/dts/rockchip/rk3328-rock-pi-e.dts @@ -153,8 +153,8 @@ &gmac2io { phy-supply =3D <&vcc_io>; pinctrl-names =3D "default"; pinctrl-0 =3D <&rgmiim1_pins>; - tx_delay =3D <0x26>; - rx_delay =3D <0x11>; + tx_delay =3D <0x1a>; + rx_delay =3D <0x14>; status =3D "okay"; =20 mdio { --=20 2.52.0