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 Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 0B4D3C43334 for ; Tue, 12 Jul 2022 21:33:07 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S233150AbiGLVdF (ORCPT ); Tue, 12 Jul 2022 17:33:05 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:37362 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229976AbiGLVdE (ORCPT ); Tue, 12 Jul 2022 17:33:04 -0400 Received: from mail-lf1-x12f.google.com (mail-lf1-x12f.google.com [IPv6:2a00:1450:4864:20::12f]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id DB2BED1ED3 for ; Tue, 12 Jul 2022 14:33:03 -0700 (PDT) Received: by mail-lf1-x12f.google.com with SMTP id n18so14376019lfq.1 for ; Tue, 12 Jul 2022 14:33:03 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; h=message-id:date:mime-version:user-agent:subject:content-language:to :cc:references:from:in-reply-to:content-transfer-encoding; bh=TIpqXGqUdbc7bp5Nv9vg+wT2LovVtvXFE8gEfCoQ/p8=; b=qrsWGWfNqgj1aZfKL3NgvzRw2+cN5C0H4oH3PJ/UGPr8pZbVgLort1Gp/E2AYiC9Aq BAUq3Wug/N8IhkPgpXRI6aID5xtl7j8KHHO02t5Jzu5fQxRnNZKYIbB1qPMfnbROP581 es4sskdOo3FvRpaQQGiPPQCtUqDHf1EQs5pjOiUXu2UJcefI51izTX93YnKnPlTL1Ll9 +qypjg1dV5Mtl+IrP9ywQK4l3aAgjLWBDHTy1GhbuqwBCJGUiYUGZRibw/VoIg4yc0uD XwFvAL5WNrH5drluy65wT6j2fc/uilW5ay0HpPWTWkBg4iSB8+arP0K3Wr21rrsZRqQv LP5g== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:message-id:date:mime-version:user-agent:subject :content-language:to:cc:references:from:in-reply-to :content-transfer-encoding; bh=TIpqXGqUdbc7bp5Nv9vg+wT2LovVtvXFE8gEfCoQ/p8=; b=K3ZYKzivx4KGNpyVY8LwLSA2ek+kU2NpYhUsx9PxQwza4wng0CoY4Wo7ShwdzBCxK2 HNQu/hbsR2SSeG1zZh4YAK4KMvoNcsQok7Ydpv5wLHf1v2lAn7ujKVCHIbjOuK8QihKW rRc0yAuOdwjUrx85uLjlDkeW/5gjThli95O4fu1dcvs7apBAavcn71yfL4ONwXDQg/Q8 LkBgyToJ+9v5APpv/krlH7Azh0A6A9EiMIlgRGH+4SXhDfIOvgl6MGcjE9D7g433cjeC M3IACIl6993HerCfGLUz6r7WZiDfuQetqCpoQSm9CrpfOQCAh82mFYXoLr9yTsROpJP4 4dcw== X-Gm-Message-State: AJIora8SCQi9ytg12NxgJiLe8VrACF3/Alv6baMcQc/1mjv26lfq1A4W RSdxWtbfnaoGzV2bjGRxyT87LtdSw4jBNw== X-Google-Smtp-Source: AGRyM1sR8GDYomRROdIPnmNEdFknF591zTF+eQqR8/kcs+ehwUsWazfVo/ZnMuA66BXVMjgeAhz7WA== X-Received: by 2002:a05:6512:239c:b0:489:cc5c:177e with SMTP id c28-20020a056512239c00b00489cc5c177emr2686lfv.645.1657661582291; Tue, 12 Jul 2022 14:33:02 -0700 (PDT) Received: from [10.0.0.8] (fwa5da9-171.bb.online.no. [88.93.169.171]) by smtp.gmail.com with ESMTPSA id u2-20020a05651206c200b00488ab8914b5sm2380747lff.213.2022.07.12.14.33.00 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Tue, 12 Jul 2022 14:33:01 -0700 (PDT) Message-ID: <1c19780c-6ce7-dd32-257d-7bdf8271055e@linaro.org> Date: Tue, 12 Jul 2022 23:32:59 +0200 MIME-Version: 1.0 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:91.0) Gecko/20100101 Thunderbird/91.11.0 Subject: Re: [PATCH 1/3] dt-bindings: usb: Add binding for TI USB8041 hub controller Content-Language: en-US To: Matthias Kaehlcke Cc: Alexander Stein , Greg Kroah-Hartman , Rob Herring , Krzysztof Kozlowski , linux-usb@vger.kernel.org, devicetree@vger.kernel.org References: <20220712150627.1444761-1-alexander.stein@ew.tq-group.com> <7c838790-1dd9-732a-e5cb-f2ea6454411a@linaro.org> From: Krzysztof Kozlowski In-Reply-To: Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit Precedence: bulk List-ID: X-Mailing-List: devicetree@vger.kernel.org On 12/07/2022 23:28, Matthias Kaehlcke wrote: >> >> But another question - why "peer-hub"? I remember some discussion about >> naming, so was peer preferred over companion? > > Yes, Alan Stern pointed out that 'companion' can be confusing in the context > of USB: > > What do you mean by "companion hub"? I think you are using the wrong > word here. If you're talking about the relation between the two logical > hubs (one attached to the SuperSpeed bus and one attached to the > Low/Full/High-speed bus) within a physical USB-3 hub, the correct term > for this is "peer". See the existing usages in hub.h, hub.c, and > port.c. > > "Companion" refers to something completely different (i.e., the UHCI or > OHCI controllers that handle Low/Full-speed connections on behalf of a > High-speed EHCI controller). > > https://patchwork.kernel.org/comment/24912563/ Thanks, that explains a lot! Best regards, Krzysztof