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[2604:1380:45e3:2400::1]) by mx.google.com with ESMTPS id a19-20020a634d13000000b005e840af2241si9407386pgb.711.2024.04.16.02.30.43 for (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 16 Apr 2024 02:30:43 -0700 (PDT) Received-SPF: pass (google.com: domain of linux-kernel+bounces-146556-linux.lists.archive=gmail.com@vger.kernel.org designates 2604:1380:45e3:2400::1 as permitted sender) client-ip=2604:1380:45e3:2400::1; Authentication-Results: mx.google.com; arc=pass (i=1 spf=pass spfdomain=arm.com dmarc=pass fromdomain=arm.com); spf=pass (google.com: domain of linux-kernel+bounces-146556-linux.lists.archive=gmail.com@vger.kernel.org designates 2604:1380:45e3:2400::1 as permitted sender) smtp.mailfrom="linux-kernel+bounces-146556-linux.lists.archive=gmail.com@vger.kernel.org"; dmarc=fail (p=NONE sp=NONE dis=NONE) header.from=arm.com Received: from smtp.subspace.kernel.org (wormhole.subspace.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by sv.mirrors.kernel.org (Postfix) with ESMTPS id F3B6F281078 for ; Tue, 16 Apr 2024 09:30:42 +0000 (UTC) Received: from localhost.localdomain (localhost.localdomain [127.0.0.1]) by smtp.subspace.kernel.org (Postfix) with ESMTP id 0949585955; Tue, 16 Apr 2024 09:30:27 +0000 (UTC) Received: from foss.arm.com (foss.arm.com [217.140.110.172]) by smtp.subspace.kernel.org (Postfix) with ESMTP id C8FDB3BBEC; Tue, 16 Apr 2024 09:30:24 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=217.140.110.172 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1713259826; cv=none; b=npt/anmAwiz2M11wfY2NY/vLBL7sh8zsVdC+/3kwbnFgtXFM3XlDUU8VAQIlPKvSjBzfvo191n8VIJ2kzLmv/o82jkHX0MtVb/UOcSWXqQNt9f07Ra9DKslLzrIt6KkofNA5WvC41gXGJYki7AbvhqQRgWszuOeLWXDDIIzow44= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1713259826; c=relaxed/simple; bh=0S4dl5OPyAOfxXD39bgYpW+Ks0WTkRgAMp/IaV6F/2s=; h=Date:From:To:Cc:Subject:Message-ID:References:MIME-Version: Content-Type:Content-Disposition:In-Reply-To; b=PmwbNaYNUZUX3Dd/70ULTR0QW8MOMZZosMRLw26Vcx8Um+1QUchIYfphg3hQP1hRy1ysHfOgDoJDp4pMWLsvKEs+vGEy46IMTgKrwelLwcM0W/lUWDNTHmc3JdIDFdiHna9868puX46BwMN82LurRcuqHQVxqkLANqix8AVDkeA= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=arm.com; spf=pass smtp.mailfrom=arm.com; arc=none smtp.client-ip=217.140.110.172 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=arm.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=arm.com 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 2E744339; Tue, 16 Apr 2024 02:30:52 -0700 (PDT) Received: from bogus (e103737-lin.cambridge.arm.com [10.1.197.49]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPSA id 581E43F792; Tue, 16 Apr 2024 02:30:21 -0700 (PDT) Date: Tue, 16 Apr 2024 10:30:18 +0100 From: Sudeep Holla To: Elliot Berman Cc: Bjorn Andersson , Sudeep Holla , Konrad Dybcio , Sebastian Reichel , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Vinod Koul , Andy Yan , Lorenzo Pieralisi , "Mark Rutland" , Bartosz Golaszewski , Satya Durga Srinivasu Prabhala , Melody Olvera , Shivendra Pratap , , , , Florian Fainelli , , Subject: Re: [PATCH v2 2/4] dt-bindings: arm: Document reboot mode magic Message-ID: References: <20240414-arm-psci-system_reset2-vendor-reboots-v2-0-da9a055a648f@quicinc.com> <20240414-arm-psci-system_reset2-vendor-reboots-v2-2-da9a055a648f@quicinc.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: <20240414-arm-psci-system_reset2-vendor-reboots-v2-2-da9a055a648f@quicinc.com> On Sun, Apr 14, 2024 at 12:30:25PM -0700, Elliot Berman wrote: > Add bindings to describe vendor-specific reboot modes. Values here > correspond to valid parameters to vendor-specific reset types in PSCI > SYSTEM_RESET2 call. > IIUC, PSCI SYSTEM_RESET will be always supported, so the choice of using SYSTEM_RESET2 sounds like a system policy and must not have any information in the device tree. All required support from PSCI is discoverable and the policy choice must be userspace driven. That's my opinion. -- Regards, Sudeep