From patchwork Thu Feb 25 19:35:43 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Suzuki K Poulose X-Patchwork-Id: 12104863 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=-16.8 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER, INCLUDES_PATCH,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED, USER_AGENT_GIT autolearn=ham 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 EE98FC433DB for ; Thu, 25 Feb 2021 19:41:29 +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 8DC3164F17 for ; Thu, 25 Feb 2021 19:41:29 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 8DC3164F17 Authentication-Results: mail.kernel.org; dmarc=fail (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=0Daobata2hgMxvLcl8920GvwUZMGe9fx7KWtjfwVOo0=; b=dQI/c3cxyi4n9ItxhvS03vSdd z0hzfLS6mKng2p1UwsDKjKCNjUAZQgmseevzc3xqMNBegNPNAErVUuJhJlvMSTAE5TYsT8YEPagpU 2NrTGhCXTGv9QHJ+BoC/jLpGDwyca39DyW9QauuVspPJBsjHyfzvBmkaHTn7uBx6oWr6La0FBKcx+ oVE3Qd7yIrlNbxdmBw5FkCaZhRkSGVKqhKNPxCoTNW9HJh6NWCs02t9K639qU80ZthUwUshOn/zRw CkOI7q/xVL4o2LXmgkIN0rVac/wfuhz9Zi5riBbKi7Jv/wzrdh0Mcz01Ub1AukJKeOQPwT7d+x2N+ wywq7/8BQ==; Received: from localhost ([::1] helo=merlin.infradead.org) by merlin.infradead.org with esmtp (Exim 4.92.3 #3 (Red Hat Linux)) id 1lFMTo-0001gb-Eh; Thu, 25 Feb 2021 19:39:20 +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 1lFMQz-0000FD-NY for linux-arm-kernel@lists.infradead.org; Thu, 25 Feb 2021 19:36:27 +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 926B11515; Thu, 25 Feb 2021 11:36:25 -0800 (PST) Received: from ewhatever.cambridge.arm.com (ewhatever.cambridge.arm.com [10.1.197.1]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPA id 5C3B73F70D; Thu, 25 Feb 2021 11:36:24 -0800 (PST) From: Suzuki K Poulose To: linux-arm-kernel@lists.infradead.org Subject: [PATCH v4 19/19] dts: bindings: Document device tree bindings for Arm TRBE Date: Thu, 25 Feb 2021 19:35:43 +0000 Message-Id: <20210225193543.2920532-20-suzuki.poulose@arm.com> X-Mailer: git-send-email 2.24.1 In-Reply-To: <20210225193543.2920532-1-suzuki.poulose@arm.com> References: <20210225193543.2920532-1-suzuki.poulose@arm.com> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20210225_143625_874564_39649313 X-CRM114-Status: GOOD ( 14.39 ) 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: Rob Herring , mathieu.poirier@linaro.org, anshuman.khandual@arm.com, Suzuki K Poulose , linux-kernel@vger.kernel.org, devicetree@vger.kernel.org, leo.yan@linaro.org, mike.leach@linaro.org Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org Document the device tree bindings for Trace Buffer Extension (TRBE). Cc: Anshuman Khandual Cc: Mathieu Poirier Cc: Rob Herring Cc: devicetree@vger.kernel.org Reviewed-by: Rob Herring Signed-off-by: Suzuki K Poulose --- .../devicetree/bindings/arm/trbe.yaml | 49 +++++++++++++++++++ 1 file changed, 49 insertions(+) create mode 100644 Documentation/devicetree/bindings/arm/trbe.yaml diff --git a/Documentation/devicetree/bindings/arm/trbe.yaml b/Documentation/devicetree/bindings/arm/trbe.yaml new file mode 100644 index 000000000000..4402d7bfd1fc --- /dev/null +++ b/Documentation/devicetree/bindings/arm/trbe.yaml @@ -0,0 +1,49 @@ +# SPDX-License-Identifier: GPL-2.0-only or BSD-2-Clause +# Copyright 2021, Arm Ltd +%YAML 1.2 +--- +$id: "http://devicetree.org/schemas/arm/trbe.yaml#" +$schema: "http://devicetree.org/meta-schemas/core.yaml#" + +title: ARM Trace Buffer Extensions + +maintainers: + - Anshuman Khandual + +description: | + Arm Trace Buffer Extension (TRBE) is a per CPU component + for storing trace generated on the CPU to memory. It is + accessed via CPU system registers. The software can verify + if it is permitted to use the component by checking the + TRBIDR register. + +properties: + $nodename: + const: "trbe" + compatible: + items: + - const: arm,trace-buffer-extension + + interrupts: + description: | + Exactly 1 PPI must be listed. For heterogeneous systems where + TRBE is only supported on a subset of the CPUs, please consult + the arm,gic-v3 binding for details on describing a PPI partition. + maxItems: 1 + +required: + - compatible + - interrupts + +additionalProperties: false + +examples: + + - | + #include + + trbe { + compatible = "arm,trace-buffer-extension"; + interrupts = ; + }; +...