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=-14.0 required=3.0 tests=BAYES_00,INCLUDES_CR_TRAILER, INCLUDES_PATCH,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED 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 DB0B3C433DB for ; Sat, 6 Mar 2021 21:07:45 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 9F320650BD for ; Sat, 6 Mar 2021 21:07:45 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229662AbhCFVHK (ORCPT ); Sat, 6 Mar 2021 16:07:10 -0500 Received: from mail-pl1-f180.google.com ([209.85.214.180]:46964 "EHLO mail-pl1-f180.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229597AbhCFVGd (ORCPT ); Sat, 6 Mar 2021 16:06:33 -0500 Received: by mail-pl1-f180.google.com with SMTP id u11so3061720plg.13; Sat, 06 Mar 2021 13:06:32 -0800 (PST) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:date:from:to:cc:subject:message-id:references :mime-version:content-disposition:in-reply-to; bh=Pa+BEb7utATuFKiH0E26PxIXz0v5UKrShp1sRIq6vbI=; b=WAXG7KuJcyCFU7GXkCxa6Wdlyi0wWVhRyn7ONmBr58QS990wESqSf5hyyJE4/w90eG yxY3ZgAJrlQKtvzTn9Tq8Rw3SVjQeI0ZDq9nhwcMrkVvnAKOnbE9C90pUm4koI3dK+Bz UwVlY/Ex1hu/ZZwZrcMMo2zr1YzHqV6iUqfuhkdByQu215aq3PrR4zf/O7f1MGs7Ploj +OvF7WnR6S6Ep4SR/yxm1wCChj1euwWhO1203XfAJjj4TqMnCvdPjmcr9R+xoSsDulEN 4H/BRT806ZGQiey+AG5yTf7a9hZt43TeRfyn81jAcdr4a8yO6bAXU1cnmRQ+EOSkyQd6 AyAw== X-Gm-Message-State: AOAM531fV1pwfL4sbQ153K9G1wWFUwia3MlSH6Q69tADKT7lJp6+iDB8 Fns/buLh9e6vTSiFv2Q0EC/foGytB2qc X-Google-Smtp-Source: ABdhPJywn0hmlzCAYkIrYcB5SFkDgi1/Sz1iy0Oc1kgjiO5AT6SoYpS+IdEfFZOwdEPSYtaN/Wt/Qg== X-Received: by 2002:a17:902:a985:b029:e3:8796:a128 with SMTP id bh5-20020a170902a985b02900e38796a128mr13873858plb.81.1615064792550; Sat, 06 Mar 2021 13:06:32 -0800 (PST) Received: from robh.at.kernel.org ([172.58.27.98]) by smtp.gmail.com with ESMTPSA id 14sm6129343pfo.141.2021.03.06.13.06.29 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sat, 06 Mar 2021 13:06:31 -0800 (PST) Received: (nullmailer pid 1212912 invoked by uid 1000); Sat, 06 Mar 2021 21:06:27 -0000 Date: Sat, 6 Mar 2021 14:06:27 -0700 From: Rob Herring To: Suzuki K Poulose Cc: linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, mathieu.poirier@linaro.org, mike.leach@linaro.org, anshuman.khandual@arm.com, leo.yan@linaro.org, devicetree@vger.kernel.org Subject: Re: [PATCH v4 15/19] dts: bindings: Document device tree bindings for ETE Message-ID: <20210306210627.GA1207387@robh.at.kernel.org> References: <20210225193543.2920532-1-suzuki.poulose@arm.com> <20210225193543.2920532-16-suzuki.poulose@arm.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20210225193543.2920532-16-suzuki.poulose@arm.com> Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Thu, Feb 25, 2021 at 07:35:39PM +0000, Suzuki K Poulose wrote: > Document the device tree bindings for Embedded Trace Extensions. > ETE can be connected to legacy coresight components and thus > could optionally contain a connection graph as described by > the CoreSight bindings. > > Cc: devicetree@vger.kernel.org > Cc: Mathieu Poirier > Cc: Mike Leach > Cc: Rob Herring > Signed-off-by: Suzuki K Poulose > --- > Changes: > - Fix out-ports defintion > --- > .../devicetree/bindings/arm/ete.yaml | 71 +++++++++++++++++++ > 1 file changed, 71 insertions(+) > create mode 100644 Documentation/devicetree/bindings/arm/ete.yaml > > diff --git a/Documentation/devicetree/bindings/arm/ete.yaml b/Documentation/devicetree/bindings/arm/ete.yaml > new file mode 100644 > index 000000000000..35a42d92bf97 > --- /dev/null > +++ b/Documentation/devicetree/bindings/arm/ete.yaml > @@ -0,0 +1,71 @@ > +# SPDX-License-Identifier: GPL-2.0-only or BSD-2-Clause > +# Copyright 2021, Arm Ltd > +%YAML 1.2 > +--- > +$id: "http://devicetree.org/schemas/arm/ete.yaml#" > +$schema: "http://devicetree.org/meta-schemas/core.yaml#" > + > +title: ARM Embedded Trace Extensions > + > +maintainers: > + - Suzuki K Poulose > + - Mathieu Poirier > + > +description: | > + Arm Embedded Trace Extension(ETE) is a per CPU trace component that > + allows tracing the CPU execution. It overlaps with the CoreSight ETMv4 > + architecture and has extended support for future architecture changes. > + The trace generated by the ETE could be stored via legacy CoreSight > + components (e.g, TMC-ETR) or other means (e.g, using a per CPU buffer > + Arm Trace Buffer Extension (TRBE)). Since the ETE can be connected to > + legacy CoreSight components, a node must be listed per instance, along > + with any optional connection graph as per the coresight bindings. > + See bindings/arm/coresight.txt. > + > +properties: > + $nodename: > + pattern: "^ete([0-9a-f]+)$" > + compatible: > + items: > + - const: arm,embedded-trace-extension > + > + cpu: > + description: | > + Handle to the cpu this ETE is bound to. > + $ref: /schemas/types.yaml#/definitions/phandle > + > + out-ports: > + description: | > + Output connections from the ETE to legacy CoreSight trace bus. > + $ref: /schemas/graph.yaml#/properties/port s/port/ports/ And then you need: properties: port: description: what this port is $ref: /schemas/graph.yaml#/properties/port > + > +required: > + - compatible > + - cpu > + > +additionalProperties: false > + > +examples: > + > +# An ETE node without legacy CoreSight connections > + - | > + ete0 { > + compatible = "arm,embedded-trace-extension"; > + cpu = <&cpu_0>; > + }; > +# An ETE node with legacy CoreSight connections > + - | > + ete1 { > + compatible = "arm,embedded-trace-extension"; > + cpu = <&cpu_1>; > + > + out-ports { /* legacy coresight connection */ > + port { > + ete1_out_port: endpoint { > + remote-endpoint = <&funnel_in_port0>; > + }; > + }; > + }; > + }; > + > +... > -- > 2.24.1 >