From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from chumsalmon.baetis.net (chumsalmon.baetis.net [209.222.21.150]) (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 B8F0A26CE03; Sun, 31 Aug 2025 13:55:43 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.222.21.150 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1756648546; cv=none; b=qN4BC3a7ItFZKYY5cO+brIFo9Xdx+nVOZwl9bDma0w1Ci5IuCqyzfXj5GBg99cYBeLoC2r7I7zOUfVEJRak1LBu8sqCqCeaUPjTjLHCY/YWMbnl6m8Q+9NIaTlWMYRl6j4zobF9NpWcWbuJyUPmbrZ/bKPpe1Btb/LnE0qD4kFU= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1756648546; c=relaxed/simple; bh=0JG/R7bAPQm+MlZqDUVOJ+JY4WzqiuAbKuf2QpGCbFA=; h=Date:From:To:Cc:Subject:Message-ID:In-Reply-To:References: MIME-Version:Content-Type; b=QSu2Hqkq3WBLgiX1L2omm1uBnCnSR1XtvS9Z7CZFNWSoFYbI8dnCCFYY+7z32NGtELOh43IHpCgEEZn86F0+IXDCZkxtXeMweFq8P565SZ5gEDCegbgWGKZn54wXR/8ut4rOMFO+eHrYmMLiFQPqWlQ3Rsar6Pi0OY7C+WrHqCo= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=tahomasoft.com; spf=pass smtp.mailfrom=tahomasoft.com; dkim=pass (2048-bit key) header.d=tahomasoft.com header.i=@tahomasoft.com header.b=D37S7zqU; arc=none smtp.client-ip=209.222.21.150 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=tahomasoft.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=tahomasoft.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=tahomasoft.com header.i=@tahomasoft.com header.b="D37S7zqU" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=tahomasoft.com; s=default; t=1756648542; bh=0JG/R7bAPQm+MlZqDUVOJ+JY4WzqiuAbKuf2QpGCbFA=; h=Date:From:To:Cc:Subject:In-Reply-To:References:From; b=D37S7zqU2/F08JIqFoIrL8DJEcIUVIgB/zPrNVJpOp5BSM2nUvb4LXkuIPWOrB2z7 GESW0lUajM8e6O0kd6lP+B2T4nG9MsvkXfmzGSKDcGjvtxCPjt5A0qPe2t6IlFOsjW Tyq3lcDuJgySMWmzr4MY5ZmPlmp/WEDZCRlOmqrPQuO6flF/9L1IWbdKn7gpOL4WVr 6fikEV0C85y/GSryytNG06kKqqv0/mXN4I1CFFpcuyQhfSBxaMbg7cK1TExGSbaA/9 6bblqQ2A/iyL26sH4pl1XJCtE5HxCZ7q14uza8Dag5AG0hHMAfxVV6PMiwH1psrUzW 1d2XiN8gzeS+Q== Received: from WahpenayoPeak.tahoma.link (unknown [IPv6:2600:4040:50be:5a04:7b87:89ea:8410:bae3]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange ECDHE (prime256v1) server-signature ECDSA (prime256v1) server-digest SHA256) (No client certificate requested) by chumsalmon.baetis.net (Postfix) with ESMTPSA id 78C2D27E468; Sun, 31 Aug 2025 13:55:42 +0000 (UTC) Date: Sun, 31 Aug 2025 09:55:41 -0400 From: Erik Beck To: Andrew Lunn Cc: Heiko Stuebner , Chukun Pan , Rob Herring , Conor Dooley , Krzysztof Kozlowski , linux-arm-kernel@lists.infradead.org, linux-rockchip@lists.infradead.org, linux-kernel@vger.kernel.org, devicetree@vger.kernel.org Subject: Re: [PATCH 0/4] arm64: dts: rockchip: Add HINLINK H66K/H68K Message-ID: <20250831095541.49568044.xunil@tahomasoft.com> In-Reply-To: References: <2803b3d8-332e-4ada-a28f-eeba8285b7ec@lunn.ch> Organization: Tahoma Soft X-Mailer: Claws Mail 4.3.1 (GTK 3.24.49; x86_64-pc-linux-gnu) Precedence: bulk X-Mailing-List: devicetree@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 On Sat, 30 Aug 2025 18:20:50 -0400 Erik Beck wrote: > > On Aug 30, 2025, at 17:30, Andrew Lunn wrote: > >=20 > > =EF=BB=BF =20 > >>=20 > >> As I worked on my dts, I discovered that the 1Gb ethernet ports, using= an > >> RTL8211, don't support rgmii-id mode; only rgmii. > >> (https://www.realtek.com/Product/Index?id=3D3976&cate_id=3D786). =20 > >=20 > > Which exact RTL8211 does the board use? You link to information for > > the RTL8211FD(I)-CG, which i assume is supported in Linux as RTL8211F. = =20 >=20 > Thanks Andrew; It isn't clear to me which specific variation it has. I'll > take another look at the boot logs and see. The silkscreen on the chips a= re > faint, but will look there too. dmesg reports it is an RTL8211F. > >=20 > > https://elixir.bootlin.com/linux/v6.16.3/source/drivers/net/phy/realtek= /realtek_main.c#L519 > >=20 > > This indicates it supports all four RGMII modes. And in general, all > > PHY drivers in Linux for RGMII PHYs support all four RGMII modes. > > =20 > >> Changing this makes a huge difference in the ethernet throughput speed. > >> With rgmii-id mode specified, throughput is about 6.5 Mbs. Changing th= is > >> to rgmii mode increases throughput to about 960 Mbs. =20 > >=20 > > Here is some more information about that the four RGMII modes mean, > > and how you should use them in Linux: > >=20 > > https://elixir.bootlin.com/linux/v6.16.3/source/Documentation/devicetre= e/bindings/net/ethernet-controller.yaml#L264 > >=20 > > Andrew =20 >=20 > Thank you! > >=20 > > _______________________________________________ > > Linux-rockchip mailing list > > Linux-rockchip@lists.infradead.org > > http://lists.infradead.org/mailman/listinfo/linux-rockchip =20