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 EA70ECD4F21 for ; Wed, 13 May 2026 22:33:38 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender:List-Subscribe:List-Help :List-Post:List-Archive:List-Unsubscribe:List-Id:In-Reply-To:Content-Type: MIME-Version:References:Message-ID:Subject:Cc:To:From:Date:Reply-To: Content-Transfer-Encoding:Content-ID:Content-Description:Resent-Date: Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=mqoWDJsbI4YlhBTV0oRNS9vO4MGiI1gRi8Q9p3RXt2k=; b=TOIofbb/wxAzgtq5dIQ2KHvFY5 8Y5i2w02MzJQqHJb8CwRGFc79ToeH84fkCDzAbBTqA7pGGKHI1SSRRPfaYciIDERYaNJGkxRwyLPO egwH2/VT7kRZbtYJ0Bupb80Ne2pGFdZS4LOegkmP2W/0OxY3BpIkfCx9j9gaE8HuC9zJy3FiCvoA8 ZdoKIXnxJwqCuRASzdN49RLvT/Xc4puxAzb6pDOWGZoXY2JwLnz4ilBGi0650QIbZQopgrxhLPcZp S9R6nVBOiHkoHwsVt3hbI4Ti0Ng8uXTmUt6v7gzEa8RGyIdLIgsq4Gn0EBF9yNI6MnynJf76a3zF/ w7j04dfA==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.99.1 #2 (Red Hat Linux)) id 1wNI8v-00000003vi1-3xh4; Wed, 13 May 2026 22:33:29 +0000 Received: from sea.source.kernel.org ([2600:3c0a:e001:78e:0:1991:8:25]) by bombadil.infradead.org with esmtps (Exim 4.99.1 #2 (Red Hat Linux)) id 1wNI8t-00000003vgx-3pW1 for linux-arm-kernel@lists.infradead.org; Wed, 13 May 2026 22:33:29 +0000 Received: from smtp.kernel.org (transwarp.subspace.kernel.org [100.75.92.58]) by sea.source.kernel.org (Postfix) with ESMTP id 8AE8143E4F; Wed, 13 May 2026 22:33:25 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 7DCC8C19425; Wed, 13 May 2026 22:33:23 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1778711605; bh=hwTH+6hUhoEyj5JZNYIPEtUSA8SkvfuKwQ7mDWYWBoQ=; h=Date:From:To:Cc:Subject:References:In-Reply-To:From; b=RGKO7okSgOVQ9IZrUm25mf71fR/4z438lhcaWg5EFEAt6bMnUoUYv7uyYc2jyW1RO ZvNRX/He8KuHhzu2WbQYVDNit4HiSaJ3OQIVQNRdAolxdLHYGvD9P9a27K5o1aLjq0 xDlVkx0srUtuzR6L2cyChOIZnSNRpj/yDv4ADydw6HSgxp2TnS0Qb0QJ39rrzrn/vP qruV+E04+ScJ4ihorRjadeGcbtwiKjaQOV3z4t2oWZwVPOMn6ujEATAPj3wfGD2JGm vCW8dOyZZhFP+Q+JK2xZ733PW7zArcH9Fz1KMGpxpSNxtlpPlDMXW+1SdqfBVo2RUo OUXl5sG+9LZtw== Date: Wed, 13 May 2026 17:33:20 -0500 From: "Rob Herring (Arm)" To: Marc Zyngier Cc: devicetree@vger.kernel.org, Conor Dooley , Mark Rutland , Thierry Reding , Ivaylo Ivanov , linux-acpi@vger.kernel.org, Neil Armstrong , Sascha Hauer , Dinh Nguyen , Sudeep Holla , Will Deacon , Chen-Yu Tsai , Matthias Brugger , "Rafael J. Wysocki" , Lars Persson , Alim Akhtar , Konrad Dybcio , Heiko Stuebner , Krzysztof Kozlowski , Jerome Brunet , Catalin Marinas , Andreas =?iso-8859-1?Q?F=E4rber?= , Orson Zhai , Ge Gordon , linux-kernel@vger.kernel.org, Bjorn Andersson , Shawn Lin , Jernej Skrabec , Martin Blumenstingl , Frank Li , Baolin Wang , Samuel Holland , AngeloGioacchino Del Regno , Michal Simek , Pengutronix Kernel Team , Hanjun Guo , Lorenzo Pieralisi , Fabio Estevam , Thomas Gleixner , Jesper Nilsson , Kevin Hilman , linux-arm-kernel@lists.infradead.org, Daniel Lezcano , Jonathan Hunter , BST Linux Kernel Upstream Group Subject: Re: [PATCH 03/16] dt-bindings: timer: arm,arch_timer: Fix requirements for interrupt description Message-ID: <177871159980.2167014.13931408615582570920.robh@kernel.org> References: <20260507125544.2903406-1-maz@kernel.org> <20260507125544.2903406-4-maz@kernel.org> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20260507125544.2903406-4-maz@kernel.org> X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.9.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20260513_153327_994513_298E8118 X-CRM114-Status: GOOD ( 17.14 ) 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: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org On Thu, 07 May 2026 13:55:31 +0100, Marc Zyngier wrote: > The arm,arch_timer DT binding is extremely imprecise in describing > the requirements for interrupts. > > Follow the architecture by making it explicit that: > - the EL1 secure timer irq is required if EL3 is implemented > - the EL1 physical timer irq is always required > - the EL1 virtual timer irq is always required > - the EL2 physical timer irq is required if EL2 is implemented > - the EL2 virtual timer irq is required if FEAT_VHE is implemented > > The consequence of the above is that the minimum number of interrupts > to be described is 2, and not 1. > > Finally, clean up the description which made the assumption that > the timers are plugged into a GIC (unfortunately, that's not always > true), drop the MMIO nonsense that has long be moved to a separate > binding, and use the architectural terminology to describe the various > interrupts. > > Signed-off-by: Marc Zyngier > --- > .../bindings/timer/arm,arch_timer.yaml | 21 +++++++------------ > 1 file changed, 8 insertions(+), 13 deletions(-) > Acked-by: Rob Herring (Arm)