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=-15.7 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH, MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED, USER_AGENT_GIT autolearn=unavailable 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 65B9BC43464 for ; Fri, 18 Sep 2020 13:31:00 +0000 (UTC) Received: from merlin.infradead.org (merlin.infradead.org [205.233.59.134]) (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 21932206B2 for ; Fri, 18 Sep 2020 13:30:54 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=lists.infradead.org header.i=@lists.infradead.org header.b="f3nEwnJO" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 21932206B2 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+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=merlin.20170209; h=Sender:Content-Transfer-Encoding: Content-Type:Cc:List-Subscribe:List-Help:List-Post:List-Archive: List-Unsubscribe:List-Id:MIME-Version:References:In-Reply-To:Message-Id:Date: Subject:To:From:Reply-To:Content-ID:Content-Description:Resent-Date: Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=W1wY1c9epF0jtv9419PwgiswqUM3JiTE4pALW5QcnQQ=; b=f3nEwnJOJbt9ygnDm10waGtT8 vOCzQx822LXnBW5c7WKjo0lr9lDPdDrJ2E2d7lsh4BAT4aHy7K5SWB9BdJFcoUGIjqBSh9aPosOlK yvcsnZgDbWP2COO8dBn4jSkkZBdo1nLT3Le2hkl+tyRd5A+3Pa7gEU4PmMGg2mBC8xNkFQgl8hoEj LrPfVA7AOgTVlXfItWy31kHaRkD8HYg3kBTfZrXz13C3c/Mc/nxZsfLPIxbofMrICSVK8OSb+5SZc nGFfbuSmFze2oUf0tiRm459BOFYmbdMv9IC+b4jeIGeRR8OaWho698H7En1DrcNULsfl0Q1WxL6Va KrIn+9MOA==; Received: from localhost ([::1] helo=merlin.infradead.org) by merlin.infradead.org with esmtp (Exim 4.92.3 #3 (Red Hat Linux)) id 1kJGRy-0001Ex-G6; Fri, 18 Sep 2020 13:29:18 +0000 Received: from foss.arm.com ([217.140.110.172]) by merlin.infradead.org with esmtp (Exim 4.92.3 #3 (Red Hat Linux)) id 1kJGRT-00013B-IC for linux-arm-kernel@lists.infradead.org; Fri, 18 Sep 2020 13:28:48 +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 771AC1045; Fri, 18 Sep 2020 06:28:46 -0700 (PDT) Received: from e121345-lin.cambridge.arm.com (e121345-lin.cambridge.arm.com [10.1.196.37]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPA id 201CF3F718; Fri, 18 Sep 2020 06:28:45 -0700 (PDT) From: Robin Murphy To: will@kernel.org, mark.rutland@arm.com, linux-arm-kernel@lists.infradead.org Subject: [PATCH v2 1/3] perf: Add Arm CMN-600 DT binding Date: Fri, 18 Sep 2020 14:28:37 +0100 Message-Id: <394449fba250349c2251832da31ac709c5a21fdc.1600357241.git.robin.murphy@arm.com> X-Mailer: git-send-email 2.28.0.dirty In-Reply-To: References: MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20200918_092847_796326_83F2B480 X-CRM114-Status: GOOD ( 16.08 ) 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: devicetree@vger.kernel.org, patrik.berglund@arm.com, tuanphan@os.amperecomputing.com, tsahee@amazon.com, harb@amperecomputing.com, james.yang@arm.com, alisaidi@amazon.com Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org Document the requirements for the CMN-600 DT binding. The internal topology is almost entirely discoverable by walking a tree of ID registers, but sadly both the starting point for that walk and the exact format of those registers are configuration-dependent and not discoverable from some sane fixed location. Oh well. Signed-off-by: Robin Murphy --- v2: fix filename, license and whitespace per Rob's comments .../devicetree/bindings/perf/arm,cmn.yaml | 57 +++++++++++++++++++ 1 file changed, 57 insertions(+) create mode 100644 Documentation/devicetree/bindings/perf/arm,cmn.yaml diff --git a/Documentation/devicetree/bindings/perf/arm,cmn.yaml b/Documentation/devicetree/bindings/perf/arm,cmn.yaml new file mode 100644 index 000000000000..15689cbf417d --- /dev/null +++ b/Documentation/devicetree/bindings/perf/arm,cmn.yaml @@ -0,0 +1,57 @@ +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) +# Copyright 2020 Arm Ltd. +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/perf/arm-cmn.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: Arm CMN (Coherent Mesh Network) Performance Monitors + +maintainers: + - Robin Murphy + +properties: + compatible: + const: arm,cmn-600 + + reg: + items: + - description: Physical address of the base (PERIPHBASE) and + size (up to 64MB) of the configuration address space. + + interrupts: + minItems: 1 + maxItems: 4 + items: + - description: Overflow interrupt for DTC0 + - description: Overflow interrupt for DTC1 + - description: Overflow interrupt for DTC2 + - description: Overflow interrupt for DTC3 + description: One interrupt for each DTC domain implemented must + be specified, in order. DTC0 is always present. + + arm,root-node: + $ref: /schemas/types.yaml#/definitions/uint32 + description: Offset from PERIPHBASE of the configuration + discovery node (see TRM definition of ROOTNODEBASE). + +required: + - compatible + - reg + - interrupts + - arm,root-node + +additionalProperties: false + +examples: + - | + #include + #include + pmu@50000000 { + compatible = "arm,cmn-600"; + reg = <0x50000000 0x4000000>; + /* 4x2 mesh with one DTC, and CFG node at 0,1,1,0 */ + interrupts = ; + arm,root-node = <0x104000>; + }; +... -- 2.28.0.dirty _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel