From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-alma10-1.taild15c8.ts.net [100.103.45.18]) (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 0C0082F8E96; Tue, 16 Jun 2026 03:49:38 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=100.103.45.18 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1781581780; cv=none; b=FiHfVYRPhsfQ4DuZmACCE/wU6J9bdj/cW1GWZzhmeOVC1NT4av3WE/ge+ToOZv2UsogaAdO0TaIAX0KAT14qh4xzFSXHsKYlne8bVnFGRbnbYeBG3qFILJ34fhXnMEiZ72lp8AcqZIBtIQxzwas0mE+21TNDF8sdUZuPPUsAAv0= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1781581780; c=relaxed/simple; bh=OUCFcuyKnRRE4PnHiT2Tu+2FaPoPVrI8ilWygmqFJvc=; h=Message-ID:Date:MIME-Version:Subject:To:Cc:References:From: In-Reply-To:Content-Type; b=XNGhYHYBWHerJvKTroAlFcHQy4hXJNBQvBnTSSp8R/+2A2MTYUPkqKaprgcIT59LJ7bp6l/17337BwljVopmh37YHdx9ONYo8+S6RF5Lw4rXxQO7CKDuU/10fS+XjySt/3iQRBn6J2zNnBjJC5oEUqD2sKsOy3Qj2j0tZS5H4no= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=iNKpTGNm; arc=none smtp.client-ip=100.103.45.18 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="iNKpTGNm" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 5E2C31F000E9; Tue, 16 Jun 2026 03:49:35 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kernel.org; s=k20260515; t=1781581778; bh=cDc8Xi19f30oX4QQKMwPG2K9ujGq0ToE5G6/ak0TJWA=; h=Date:Subject:To:Cc:References:From:In-Reply-To; b=iNKpTGNmFRDdVoyRd1VJB1WPLhxzg+WdmATrrZ/lS0cjBMrLzU2dtRX2EVSn2SQ59 86k0ogxf57y0EoP4wt8RXw1kDJml+XQFf1k/wfe0EVTrvg+qCqLGIYsRTmR0Xgguse lJA0s/DFuBf6KHvMxkxEdumYSUSvkYfaAqyBIngYJyrmpG5ZahBN0e305Yq+0Ji5Le jwIyK8QeCJLTeltT10g4Ph0ms2WzZM1OQ+YejW7vwQluQhvyl4hifNK8UNxMjyiqbW t0tRkF27BHYztQGHZ/sxNT85/yTYRHdtumHbMGPPy6VIBDFGyJTooTHRBl2i4eb0fa bNtOzEJOPMblA== Message-ID: Date: Tue, 16 Jun 2026 05:49:32 +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] arm64: dts: qcom: install DT overlays via dtbs_install To: Vishwas Udupa Cc: andersson@kernel.org, conor+dt@kernel.org, devicetree@vger.kernel.org, kbajaj@qti.qualcomm.com, konradybcio@kernel.org, krzk+dt@kernel.org, linux-arm-msm@vger.kernel.org, robh@kernel.org, snb@qti.qualcomm.com, vudupa@qti.qualcomm.com References: <0f045b88-94fc-46b5-8a49-8a53235fc8fc@kernel.org> <20260615162739.787779-1-vishwas.udupa@oss.qualcomm.com> From: Krzysztof Kozlowski Content-Language: en-US Autocrypt: addr=krzk@kernel.org; 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charset=UTF-8 Content-Transfer-Encoding: 7bit On 15/06/2026 18:27, Vishwas Udupa wrote: > EL2 DTBOs are used at build time to construct DTBs corresponding to > an EL2 (hypervisor-enabled) boot configuration. These DTBs are included in > distributions [1] as complete boot configurations (e.g. EL1 and EL2). > > The EL2 configuration is not enabled by default and is typically selected > after the initial boot by updating a UEFI runtime variable from userspace. > Once set, firmware selects the prebuilt EL2 DTB on subsequent boots. > > Although EL2 DTBOs are not used directly at runtime during initial boot, > they are required to generate and package the EL2 DTBs in the image so that > firmware can switch to EL2 when the configuration variable is enabled. Hence, el2 dtbo's > need to be retained. > > 1: https://github.com/qualcomm-linux/qcom-dtb-metadata/blob/main/qcom-next-fitimage.its#L273 You cut entire context making any discussion very difficult. Anyway, comment stays. EL2 is not an overlay. If I need to repeat myself, then let's do like: NAK Best regards, Krzysztof