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 X-Spam-Level: X-Spam-Status: No, score=-2.2 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE, SPF_PASS,URIBL_BLOCKED,USER_AGENT_SANE_1 autolearn=no autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 0ED01CA9EAF for ; Thu, 24 Oct 2019 15:26:39 +0000 (UTC) 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 mail.kernel.org (Postfix) with ESMTPS id AFC95205C9 for ; Thu, 24 Oct 2019 15:26:38 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=lists.infradead.org header.i=@lists.infradead.org header.b="aJ5nQ+zS" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org AFC95205C9 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=arm.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-arm-kernel-bounces+infradead-linux-arm-kernel=archiver.kernel.org@lists.infradead.org DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20170209; h=Sender: Content-Transfer-Encoding:Content-Type:Cc:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:In-Reply-To:MIME-Version:References: Message-ID:Subject:To:From:Date:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=rL1EFR1RyTAeh9+jVX/PsOVs20Zh2vOE36/PSxqDXKY=; b=aJ5nQ+zSjEkPyf ckQk7dookEBNB4BZFJDO2AvtVrun4WxmQi7dpyxQ+6pZPNSLU53A3nrr/wPTQILtMZf9es2hKS6lV mCv+1wdF9+uJx6u0rKxrlNGGfaF9QKeD8pSLs5itCaFFz+Po+2I3xrpBI4vYya1XY0diTEbdPtOfZ 2pclKbxDurErMIoJmVDxlS4e5w3kVtkO8OPPyS5sC4QBdXq13gr9V//QkPJ4EJDC6glnn4LEiC67T U6LyZGTKfH4KgUlivQJVEeIah1WEKFImPJ3VCkYG3b5LtMHqSuRfx6NCs6eeHbJ9WLZeCmWSBBf0H BoTJNGJZS1+IhXENM+Ug==; Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.92.3 #3 (Red Hat Linux)) id 1iNf0X-0008QO-UG; Thu, 24 Oct 2019 15:26:37 +0000 Received: from [217.140.110.172] (helo=foss.arm.com) by bombadil.infradead.org with esmtp (Exim 4.92.3 #3 (Red Hat Linux)) id 1iNf0V-0008Pe-39 for linux-arm-kernel@lists.infradead.org; Thu, 24 Oct 2019 15:26:36 +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 6950031F; Thu, 24 Oct 2019 08:26:24 -0700 (PDT) Received: from bogus (e107155-lin.cambridge.arm.com [10.1.196.42]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPSA id 66B193F71F; Thu, 24 Oct 2019 08:26:22 -0700 (PDT) Date: Thu, 24 Oct 2019 16:26:16 +0100 From: Sudeep Holla To: Ulf Hansson Subject: Re: [PATCH 02/13] dt: psci: Update DT bindings to support hierarchical PSCI states Message-ID: <20191024152504.GA11467@bogus> References: <20191010113937.15962-1-ulf.hansson@linaro.org> <20191010113937.15962-3-ulf.hansson@linaro.org> MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: <20191010113937.15962-3-ulf.hansson@linaro.org> User-Agent: Mutt/1.9.4 (2018-02-28) X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20191024_082635_178994_BF9F9816 X-CRM114-Status: GOOD ( 13.31 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Mark Rutland , Lorenzo Pieralisi , linux-pm@vger.kernel.org, Stephen Boyd , linux-arm-msm@vger.kernel.org, Daniel Lezcano , "Rafael J . Wysocki" , Lina Iyer , Bjorn Andersson , Kevin Hilman , Rob Herring , Lina Iyer , Sudeep Holla , linux-arm-kernel@lists.infradead.org Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+infradead-linux-arm-kernel=archiver.kernel.org@lists.infradead.org On Thu, Oct 10, 2019 at 01:39:26PM +0200, Ulf Hansson wrote: > Update PSCI DT bindings to allow to represent idle states for CPUs and the > CPU topology, by using a hierarchical layout. Primarily this is done by > re-using the existing power domain description [1] and the domain idle > state description [2]. > > Let's also take the opportunity to update the examples to clarify the > difference between the currently supported flattened layout vs the new > hierarchical layout. > This looks fine to me. FWIW: Reviewed-by: Sudeep Holla But before this gets merged, I would like to add another but "the golden" example Qcom *always* referred during ACPI LPI discussions. Ofcourse, it can be addition patch and if I get time, I can write this but no promise ATM. Hierarchical Representation: System 1. SYSTEM_RET 2. SYSTEM_PG Cluster#0 1. CLUSTER_RET 2. CLUSTER_PG Core#0 1. CORE_CG 2. CORE_RET 3. CORE_PG Core#1 1. CORE_CG 2. CORE_RET 3. CORE_PG Cluster#1 (ditto) Flattened Representation: Core#0 1 CORE_CG 2 CORE_RET 3 CORE_RET + CLUSTER_RET 4 CORE_RET + CLUSTER_RET + SYSTEM_RET 5 CORE_PG 6 CORE_PG + CLUSTER_RET 7 CORE_PG + CLUSTER_RET + SYSTEM_RET 8 CORE_PG + CLUSTER_PG 9 CORE_PG + CLUSTER_PG + SYSTEM_RET 10 CORE_PG + CLUSTER_PG + SYSTEM_PG Though we may not implement everything needed to support this, but we must ensure we don't have to end up in a situation breaking backward compatibility trying to support the same. -- Regards, Sudeep _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel