From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from bali.collaboradmins.com (bali.collaboradmins.com [148.251.105.195]) (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 0C0B1306B09; Wed, 17 Sep 2025 09:06:15 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=148.251.105.195 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1758099978; cv=none; b=DG2d+DYgIFv5Dj63FXJ1w+y51WYnhFrFKw6Rg/VxV1DVQ7b8Y61OM2lgrGAFmPqArgxgvlvAKy3huJhuL17HKHAA7zUljgCz8b4BX9r/wgRAQLsI/3n6LEfb8+GaPHDn9W6sqKEAJifprQiwDM4KyN0ZyJ0zU+7iKEoY0luyKbY= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1758099978; c=relaxed/simple; bh=uysw1dHCz2WslwLQVyxUkMNdtoTDG8ekcBjPK/8bbwU=; h=Message-ID:Date:MIME-Version:Subject:To:References:From: In-Reply-To:Content-Type; b=bjHAHnRMrB8RZiuxJaWWKiz/nEPgNL+bo6XmD3VpDe74vhS0nZVpG7VsV8IExefKxlaLU7HUpAS8LiIJuEaj5xi/GPgvttQUJtD6RiSgCp53RAIAvRMQ6RUvJarurz0vqi5MJBvJb00CkBa/Kdhw9t1mU37K+WRpqENjUIHWroE= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=collabora.com; spf=pass smtp.mailfrom=collabora.com; dkim=pass (2048-bit key) header.d=collabora.com header.i=@collabora.com header.b=HuBjnmo5; arc=none smtp.client-ip=148.251.105.195 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=collabora.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=collabora.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=collabora.com header.i=@collabora.com header.b="HuBjnmo5" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=collabora.com; s=mail; t=1758099974; bh=uysw1dHCz2WslwLQVyxUkMNdtoTDG8ekcBjPK/8bbwU=; h=Date:Subject:To:References:From:In-Reply-To:From; b=HuBjnmo5S5KOiTh4tR8/9rfTE7/gh2nfoH91h2NwGzJCfJwBUE1Jz6zRUhljdJjA0 yUNLVn0wL0+hM68nwAbRUVyeA6ORBMJKcEV8oyHt7FBxGYUsBzrzRrSQB+6IZS4LYX guY94nP+L4oovufloOu6nT+ArGQVBbTwtjPiY7xvYKzfwqn2L64VLH7K6ggN0N7SHR KcpeUY5d3VtdmDB+79+HNCtFip33Vv+HRdDpt5cmJ4WARce7JgthF621vq2q8Q527J iS3Yv8TOsGH2t30qlt/KVZ3zFcBNJ6hE0pDCqejZ856ZfIZ428u7eE/W4DMf9o8/W9 9inEpA0MNHK5A== Received: from [192.168.1.100] (2-237-20-237.ip236.fastwebnet.it [2.237.20.237]) (using TLSv1.3 with cipher TLS_AES_128_GCM_SHA256 (128/128 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits)) (No client certificate requested) (Authenticated sender: kholk11) by bali.collaboradmins.com (Postfix) with ESMTPSA id A6E0D17E124A; Wed, 17 Sep 2025 11:06:13 +0200 (CEST) Message-ID: <87179c9f-cc7f-446f-9e8d-c84bddb48660@collabora.com> Date: Wed, 17 Sep 2025 11:06:13 +0200 Precedence: bulk X-Mailing-List: devicetree@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH 1/4] arm64: dts: mediatek: mt7622: add 'serial' cell to efuse To: Daniel Golle , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Matthias Brugger , devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-mediatek@lists.infradead.org References: <18af6977cc34de75e64279141dee69dcbc81c420.1758063737.git.daniel@makrotopia.org> From: AngeloGioacchino Del Regno Content-Language: en-US In-Reply-To: <18af6977cc34de75e64279141dee69dcbc81c420.1758063737.git.daniel@makrotopia.org> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit Il 17/09/25 01:05, Daniel Golle ha scritto: > The efuse of the MediaTek MT7622 contains an 8-byte unique identifier. > Add a 'serial' cell covering those 8 bytes to the nvmem defininition of > the efuse to allow easy access from userspace, eg. to generate a > persistent random MAC address on boards like the BananaPi R64 which > doesn't have any factory-assigned addresses. Sorry, but I don't get why this is named "serial" and not "soc-uuid". Care to explain? Cheers, Angelo > > Signed-off-by: Daniel Golle > --- > arch/arm64/boot/dts/mediatek/mt7622.dtsi | 4 ++++ > 1 file changed, 4 insertions(+) > > diff --git a/arch/arm64/boot/dts/mediatek/mt7622.dtsi b/arch/arm64/boot/dts/mediatek/mt7622.dtsi > index 917fa39a74f8..0b9803a183b9 100644 > --- a/arch/arm64/boot/dts/mediatek/mt7622.dtsi > +++ b/arch/arm64/boot/dts/mediatek/mt7622.dtsi > @@ -278,6 +278,10 @@ efuse: efuse@10206000 { > #address-cells = <1>; > #size-cells = <1>; > > + serial@140 { > + reg = <0x140 0x8>; > + }; > + > thermal_calibration: calib@198 { > reg = <0x198 0xc>; > };