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 700F7EC1E9B for ; Thu, 5 Feb 2026 11:08:33 +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=KW5vB/Vw3XfpAvtftR7uGU0e8QnnsppX33V2Z5JCWjs=; b=0TKomB87/Id/hRQHXtiSjkwgtZ UCdGrp4tp+ZVFF3miaPY1iiuYs2rJRZlfUJ1jbdBeUqZ0TPisZTCiSWXffU5Dp2yLEp222OhRdU5y hxwgDU1+Y6CTHbZHm/UIYTg43SXq7j1v47drJtL6jlsbLALAC2m3UBhhY30cZkCXAHSE0GnOuY5gb DG3c5Hvs8CteljcH3trjS0OXbZMsSpZqr8I37BWMR+arofHC4S8LZoEre8ievwSV3Px3LhE8BcthE RhLFNvoXsy1f9zGQ4Lia1CikXyzw6jKOyW3gt+RfUYoOklaRO+KTNRnW3qF8jss+8/y06jnc/fUcY LcxrReww==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.98.2 #2 (Red Hat Linux)) id 1vnxDl-00000009onw-0jl0; Thu, 05 Feb 2026 11:08:25 +0000 Received: from tor.source.kernel.org ([2600:3c04:e001:324:0:1991:8:25]) by bombadil.infradead.org with esmtps (Exim 4.98.2 #2 (Red Hat Linux)) id 1vnxDk-00000009onq-0fn8 for linux-arm-kernel@lists.infradead.org; Thu, 05 Feb 2026 11:08:24 +0000 Received: from smtp.kernel.org (transwarp.subspace.kernel.org [100.75.92.58]) by tor.source.kernel.org (Postfix) with ESMTP id 32481600AD; Thu, 5 Feb 2026 11:08:23 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id DFD8EC19423; Thu, 5 Feb 2026 11:08:20 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1770289702; bh=KRr5bjxloleM+AjFGvAP5BAhi15uf5B/cBZt51MJT3o=; h=Date:From:To:Cc:Subject:References:In-Reply-To:From; b=jR7ve9k6a0TtuqoQ3bWHXpWD9u+XVhWUBrE56+vmacl1cQVpOJ9GNIOPvskj0RDDh QHcRGtRnXVmUjazf/jtkjGXsznxKSr/IENSXB2B9f+QYfTN5Hbrkz5SR7eVPtxlpEg TBsDErnK8kc1iWdXBFiBQNpylip4bm+nQN0SzX0VxsbAa0ukcNe55c8yHtJy1cVZ8S Hq3OXx7cKJXXAhmJT03KmmWkZKqG5dz9J58RkSIP2N7azfewAZ0ILSRyNNGg8zdnCd UT5YqwNX29RX5pjsqyr66kHnYeYvykyNeRNTTm/1ZACPnubk4U2eQgHrCBYs7hA9JN ZcvHBJoXdZnsA== Date: Thu, 5 Feb 2026 11:08:18 +0000 From: Sudeep Holla To: Cristian Marussi Cc: Andre Przywara , Debbie Horsfall , Rob Herring , Sudeep Holla , Krzysztof Kozlowski , Conor Dooley , Liviu Dudau , Lorenzo Pieralisi , devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org Subject: Re: [PATCH 2/2] arm64: dts: zena: Add support for Zena CSS Message-ID: <20260205-intelligent-intrepid-robin-df42bd@sudeepholla> References: <20260123-zena-css-v1-0-34adb95cdf89@arm.com> <20260123-zena-css-v1-2-34adb95cdf89@arm.com> <20260127132206.036892e4@donnerap.manchester.arm.com> <8c343e6d-14f8-4f55-8218-bc3f0813e8cf@arm.com> <20260130-light-piquant-termite-fcbec4@sudeepholla> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: 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 Tue, Feb 03, 2026 at 12:11:57PM +0000, Cristian Marussi wrote: > > All of this madness was the best way I could find to address the problem > of supporting such new unidirectional mailboxes in the SCMI while NOT > breaking backward compatibility in the absence of mandatory naming from > the start. > You can attribute this to my expecting an overly ideal scenario with bidirectional mailbox channels across all platforms using SCMI. At the time, I did not anticipate the range of configurations that rely on unidirectional channels. -- Regards, Sudeep