From mboxrd@z Thu Jan 1 00:00:00 1970 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 CF5DF169AE6; Fri, 25 Apr 2025 16:39:32 +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=1745599172; cv=none; b=V2fgTTDMTdJMyHbEi6YGWzLlv3P4bsZX7rz/HZZ9kkXEUdnVSt//QSPT6Avv0optpUYqdnyDMODrnUnSpP5J+GVSFiAXeKAlw0aE6taNa9Mu9MNpUA2zynlsobKOFeKj/t0Ih5sS3Z/Le1fZNbGnq0/GpzIpyE8cGBCEKI3gXSo= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1745599172; c=relaxed/simple; bh=kJppPNHkNpoSTVJHZawRj5UdBz23b9vR67EeA8OJ1XI=; h=Message-ID:Date:MIME-Version:Subject:From:To:Cc:References: In-Reply-To:Content-Type; b=jk/kk8+d2v1t51tIC5C7+ikudJ2Wc99GOES/HQbILsio2rq9KJcVQgZUUtei3TQDJ0J7b/W7qlPD16LdnondMSU+np08T0pYWk8AOIutVtu/Gsj1MadoPqVUf4AYaWdVXXZ5tXYyH/v0zaIbG9+5GbuHvvQRA7rKShV2u+bHYoc= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=KIMYx6s8; 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="KIMYx6s8" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 45907C4CEE4; Fri, 25 Apr 2025 16:39:29 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1745599172; bh=kJppPNHkNpoSTVJHZawRj5UdBz23b9vR67EeA8OJ1XI=; h=Date:Subject:From:To:Cc:References:In-Reply-To:From; b=KIMYx6s8btvFCZq8uw9Ft9JRZz99wpDLx7MLzfvP7E5EjOxzrM4WRGtiVR7o+h1YP Ti5co0T2KWTC0MYg4QZg2JyP0ul0NiyWvaTbAI+yYko4h7QNw3eJ+gbmKXMzgXVC0K 1b/OoVUCSjmwmlxJK8yWvURxD8CyCEN0S9W75/DzgG3qYT6vG5zGQ9ivI1UwrHyZ/q 1j4aswVE6/T6LjUewESS8xVplMNXR9lzIPBqiY/0NKdnLPmi23dn9KjBserc/2YjtH 1WiiE5LJt2+NUe+09AgH9a+coFHVSO4YwW+9WCsBhGy6ByA9u7WeWBizJxsHys/4md e6SsgkOwy9hDA== Message-ID: Date: Fri, 25 Apr 2025 18:39:27 +0200 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH v1] arm64: dts: imx8qm: add ethernet aliases From: Krzysztof Kozlowski To: Francesco Dolcini , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Shawn Guo , Sascha Hauer , Pengutronix Kernel Team , Fabio Estevam Cc: Francesco Dolcini , devicetree@vger.kernel.org, imx@lists.linux.dev, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org References: <20250422100239.58799-1-francesco@dolcini.it> <16a98816-f43c-4f4d-940e-9da30cb1f73f@kernel.org> Content-Language: en-US Autocrypt: addr=krzk@kernel.org; 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charset=UTF-8 Content-Transfer-Encoding: 7bit On 25/04/2025 18:36, Krzysztof Kozlowski wrote: > On 22/04/2025 12:02, Francesco Dolcini wrote: >> From: Francesco Dolcini >> >> Add ethernet aliases, they are used by the firmware to set the MAC >> address and by systemd to rename network interfaces to predictable >> interface names, e.g. end0 and end1. >> >> Signed-off-by: Francesco Dolcini >> --- >> arch/arm64/boot/dts/freescale/imx8qm.dtsi | 2 ++ >> 1 file changed, 2 insertions(+) >> >> diff --git a/arch/arm64/boot/dts/freescale/imx8qm.dtsi b/arch/arm64/boot/dts/freescale/imx8qm.dtsi >> index 6fa31bc9ece8..eccd0087efa7 100644 >> --- a/arch/arm64/boot/dts/freescale/imx8qm.dtsi >> +++ b/arch/arm64/boot/dts/freescale/imx8qm.dtsi >> @@ -17,6 +17,8 @@ / { >> #size-cells = <2>; >> >> aliases { >> + ethernet0 = &fec1; >> + ethernet1 = &fec2; > Can't they be disabled (e.g. because MAC is external?) on actual board? > IOW, aliases for exposed interfaces are properties of boards, not SoC. > > What's more, I cannot find these in this DTSI, so how can you add alias > to non-existing node? I found them (terrible design by NXP) but they are disabled so that's the point - adding aliases to disabled nodes is clear sign you are doing it wrong. Best regards, Krzysztof