From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 400CFFD706B for ; Tue, 17 Mar 2026 10:34:03 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender:Cc:List-Subscribe: List-Help:List-Post:List-Archive:List-Unsubscribe:List-Id: Content-Transfer-Encoding:MIME-Version:References:In-Reply-To:Message-ID:Date :Subject:To:From:Reply-To:Content-Type:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=dh9IxCswFJgqZabUHtvRte9E0xmU3u1DyO13otUVXZA=; b=sSXJPJuPdfZYK/ 8GFNGnaST+O4EHSY71ItoBAEQjLWPKFTOMyvwnHginAXkslSbCk+o7bfukuvLKMWzf+RzcLfb29jY +LgGnt/3Mm8BkCtyQ4/lY3jJUnDh4NtkJTtd8YlNWdYFSLZ/h+bno+dQZEr1z57ByQ9WTUk/hRZ8H uAP+tPr+IomKI1q5EUV30PUWA6MShAoYezqNKP1dUMJfn2vX8qzgkWhMIVdTooO8jXESBxP6eBekP I6lRjXq5T0VmZlHoLPr+wMfBCo4QRAdxMW4dgVFwyw4uojxQwL8uYMhSiY73BqBmGHUBTQz9Lbsic w0KrKMPm4R/fKY4TcZQQ==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.98.2 #2 (Red Hat Linux)) id 1w2RkK-0000000623J-0tRM; Tue, 17 Mar 2026 10:33:56 +0000 Received: from foss.arm.com ([217.140.110.172]) by bombadil.infradead.org with esmtp (Exim 4.98.2 #2 (Red Hat Linux)) id 1w2RkD-000000061xV-3XGX for linux-arm-kernel@lists.infradead.org; Tue, 17 Mar 2026 10:33:51 +0000 Received: from usa-sjc-imap-foss1.foss.arm.com (unknown [10.121.207.14]) by usa-sjc-mx-foss1.foss.arm.com (Postfix) with ESMTP id 18D7A1477; Tue, 17 Mar 2026 03:33:41 -0700 (PDT) Received: from e142021.fritz.box (usa-sjc-mx-foss1.foss.arm.com [172.31.20.19]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPSA id B8F143F7BD; Tue, 17 Mar 2026 03:33:44 -0700 (PDT) From: Andre Przywara To: Mark Rutland , Lorenzo Pieralisi , Sudeep Holla , Rob Herring , Krzysztof Kozlowski , Conor Dooley Subject: [PATCH v2 1/8] dt-bindings: arm: Add Live Firmware Activation binding Date: Tue, 17 Mar 2026 11:33:27 +0100 Message-ID: <20260317103336.1273582-2-andre.przywara@arm.com> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20260317103336.1273582-1-andre.przywara@arm.com> References: <20260317103336.1273582-1-andre.przywara@arm.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20260317_033349_941731_A04ED642 X-CRM114-Status: GOOD ( 13.16 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: vsethi@nvidia.com, Salman Nabi , devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, vwadekar@nvidia.com, Trilok Soni , Nirmoy Das , linux-arm-kernel@lists.infradead.org Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org The Arm Live Firmware Activation spec [1] describes updating firmware images during runtime, without requiring a reboot. Update images might be deployed out-of-band, for instance via a BMC, in this case the OS needs to be notified about the availability of a new image. This binding describes an interrupt that could be triggered by the platform, to notify about any changes. [1] https://developer.arm.com/documentation/den0147/latest/ Signed-off-by: Andre Przywara --- .../devicetree/bindings/arm/arm,lfa.yaml | 45 +++++++++++++++++++ 1 file changed, 45 insertions(+) create mode 100644 Documentation/devicetree/bindings/arm/arm,lfa.yaml diff --git a/Documentation/devicetree/bindings/arm/arm,lfa.yaml b/Documentation/devicetree/bindings/arm/arm,lfa.yaml new file mode 100644 index 000000000000..92f0564fd672 --- /dev/null +++ b/Documentation/devicetree/bindings/arm/arm,lfa.yaml @@ -0,0 +1,45 @@ +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/arm/arm,lfa.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: Arm Live Firmware Activation (LFA) + +maintainers: + - Andre Przywara + - Sudeep Holla + +description: + The Arm Live Firmware Activation (LFA) specification [1] describes a + firmware interface to activate an updated firmware at runtime, without + requiring a reboot. Updates might be supplied out-of-band, for instance + via a BMC, in which case the platform needs to notify an OS about pending + image updates. + [1] https://developer.arm.com/documentation/den0147/latest/ + +properties: + compatible: + const: arm,lfa + + interrupts: + maxItems: 1 + description: notification interrupt for changed firmware image status + +required: + - compatible + - interrupts + +additionalProperties: false + +examples: + - | + #include + + firmware { + arm-lfa { + compatible = "arm,lfa"; + interrupts = ; + }; + }; +... -- 2.43.0