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 7A48037997E; Fri, 17 Jul 2026 08:38:40 +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=1784277521; cv=none; b=hl97HUfEdrjEsJ9SU9KzpE+o4izR0Lf/fywppE1avauzAB67KzxbA+YB6iQPu3YwFcfaMvwtZV3zEbQrEmsa7Zpf8z5rgHqiHo0bqFn/kg3QGfn7iKpqKzYTrfERX/BjMdJds7abO/6Lg6Qx4HAZizKuEmVkq94YLq3W9A3sDCU= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1784277521; c=relaxed/simple; bh=JO9lZr9AOnxpk03NBQMXO2SCByjAQ78w/9N3gr1bg3A=; h=Date:From:To:Cc:Subject:Message-ID:References:MIME-Version: Content-Type:Content-Disposition:In-Reply-To; b=F3fy57eS+CUExyTyQvb5lQx9pAbPcpnxo8HqMr9J6std6sFzbTjFqEl7H+Km7WMrhSv6SnJNdE909al3iIxgatTnxu2vRjrhGjrvNkd6PD0y1m+6KS+RRXcg/Y3FomPdm4ul4l2lUeyq2nqM1ZmbuOjCkVj1Ju8nmWdmXeqvnwA= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=MlUgvP3L; 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="MlUgvP3L" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 5243D1F000E9; Fri, 17 Jul 2026 08:38:37 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kernel.org; s=k20260515; t=1784277520; bh=6Sy6bLu9Q3NOEH8nZ+KczW/y7ldpRksGLq6zS2Mbwf4=; h=Date:From:To:Cc:Subject:References:In-Reply-To; b=MlUgvP3LbouDsJKh3lNGWq26S6zD6qpcNMHht7j74BGZOhIqHvnqIz/xIZFQRsPKW uWIdKk3cAUDH0/kFYiXF3TvXDR7y7ToEsMo+On3E5cVbXlP7ksOXEZ3/XX0R8j8+QK 8YbXUZD3kCG0DFErcfxU/5ym6p3/cgmQEqpTKfVJ2tpqUwqlWofmBSshnQEREY3LdP WUELjNe1sRgb+ZrXZSIWShDWHRZRanyu2jdqThFu5M0mvJHvMXiK3eMyqRXsP/hJV/ PS1eNL21uTjUAqYwAtY++I+CyU0NKY11RMumQ44UkF52WEAkDeiOIx4Gr7pcJrY6fz 1kXzDqhf8fx3Q== Date: Fri, 17 Jul 2026 09:38:35 +0100 From: Sudeep Holla To: Andre Przywara Cc: Mark Rutland , Sudeep Holla , Lorenzo Pieralisi , Salman Nabi , Vedashree Vidwans , Trilok Soni , Nirmoy Das , vsethi@nvidia.com, Varun Wadekar , linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, Rob Herring , Krzysztof Kozlowski , Conor Dooley , devicetree@vger.kernel.org Subject: Re: [PATCH v3 1/8] dt-bindings: arm: Add Live Firmware Activation Message-ID: <20260717-lucky-gerbil-of-courtesy-162f0e@sudeepholla> References: <20260706134455.132091-1-andre.przywara@arm.com> <20260706134455.132091-2-andre.przywara@arm.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20260706134455.132091-2-andre.przywara@arm.com> On Mon, Jul 06, 2026 at 03:44:41PM +0200, Andre Przywara wrote: > 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. > > Describe 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..ef8e250f2da7 > --- /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. What does the below described "interrupts" cover or doesn't cover? Both in case of in-band and out-of-band. It is not very clear for me. -- Regards, Sudeep