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 28D39C433EF for ; Tue, 12 Apr 2022 10:24:38 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S245431AbiDLK0n (ORCPT ); Tue, 12 Apr 2022 06:26:43 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:59458 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1376791AbiDLKTa (ORCPT ); Tue, 12 Apr 2022 06:19:30 -0400 Received: from mail-ej1-x630.google.com (mail-ej1-x630.google.com [IPv6:2a00:1450:4864:20::630]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id DD3CA7D02E for ; Tue, 12 Apr 2022 02:17:08 -0700 (PDT) Received: by mail-ej1-x630.google.com with SMTP id ks6so11411693ejb.1 for ; Tue, 12 Apr 2022 02:17:08 -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=GhRsvMkqvOOZJ6oaXqUbn0li7sCX29u9xzmiTytidkU=; b=sqyfOTz7XJvOCL5M1maTVrFwiuyplXumGmdQcsG5q+E/kmxF+RY74KM3gGHaX+dXWQ IgXgoAqq0nbUBzxBaYqJ67ua3WQHE78OOnsNkkCtlSNdr2ok9W9pGfd9kDc35HNM+3PL ZofHRa+AVA+/tnD93nN7h0e/SWxCH7W7FSaTcqKY4G/thTKVIH6rz6mJ9gSjrWwN23Ll /8eb8Pdf0eLYNq9Fhw3W/hTCzIBEcC2GS6CZAVtizlWq2uCZGh5dZNOBE3LWDFn5k+8h ecMFhQ69Ri9j6CQ0dMcw8OVKH7KNjYhNqTY3Qma38vQytSAJ6ULJvn/K4ng8P7ZEm9DS VauQ== 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=GhRsvMkqvOOZJ6oaXqUbn0li7sCX29u9xzmiTytidkU=; b=qg2fPlwre6fRhGQtxB08fSU7nposyaBYqTsjgSX8yGpdhXBOtZGGduBPzEmElLv7ML Hi2rRUGJGQu1iphL5dvbSuEC5ECdyF9s6te1dW3zG/0GeGX991+sB4tALC8LaYL5I84d QtlwPXbWSk/5g8iFCxHFYaWOl9GM59LVe20xoXpllMp6apCvbGD9Qldx87Xpgja5UK6L HbeDuqbF6UR/7BYwoIyUYxjgraNV9VR+u2376ck5lU+1RA7n4D8LaV9Fdsz3QMmM+IJk U7pYkFQli4JhJqHmhYmRRXL78sdmmFEaGegyCXofXJ/pilu/dH5VnVh9SKCxIiWqJPaf +Wjg== X-Gm-Message-State: AOAM532mwSNlKyxKI9SFR5SBTiY6xhO+A6uMKUDPp7lAUh6z1/Y+IjbP 2nNbTxpOqCUd4+BQsgY/cwpyRg== X-Google-Smtp-Source: ABdhPJytgzbzMy/xrcB0VUNhJafmlE2cIehjiSoAP81ZGOZ6ie8XloS5sE9HdQwarBVxSude5T6RtQ== X-Received: by 2002:a17:906:3082:b0:6e0:111f:8986 with SMTP id 2-20020a170906308200b006e0111f8986mr32504576ejv.677.1649755027477; Tue, 12 Apr 2022 02:17:07 -0700 (PDT) Received: from [192.168.0.194] (xdsl-188-155-201-27.adslplus.ch. [188.155.201.27]) by smtp.gmail.com with ESMTPSA id g2-20020a50bf42000000b0041cc5233252sm13533827edk.57.2022.04.12.02.17.06 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Tue, 12 Apr 2022 02:17:07 -0700 (PDT) Message-ID: <39152c86-ca11-2792-6b25-ae55ffb47b09@linaro.org> Date: Tue, 12 Apr 2022 11:17:06 +0200 MIME-Version: 1.0 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:91.0) Gecko/20100101 Thunderbird/91.7.0 Subject: Re: [PATCH v2 1/2] dt-bindings: devfreq: mediatek: Add mtk cci devfreq dt-bindings Content-Language: en-US To: Johnson Wang , cw00.choi@samsung.com, krzk+dt@kernel.org, robh+dt@kernel.org, kyungmin.park@samsung.com Cc: khilman@kernel.org, linux-pm@vger.kernel.org, linux-kernel@vger.kernel.org, devicetree@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-mediatek@lists.infradead.org, jia-wei.chang@mediatek.com, Project_Global_Chrome_Upstream_Group@mediatek.com References: <20220408052150.22536-1-johnson.wang@mediatek.com> <20220408052150.22536-2-johnson.wang@mediatek.com> <855d7daa-45d1-d6d8-32bd-51778cf58392@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: linux-kernel@vger.kernel.org On 11/04/2022 14:10, Johnson Wang wrote: >> Also please put it in the "interconnect" directory. >> > > I don't really know about "interconnect". > However, it looks like a Linux framework about data transfer and "NoC". > > While this cci driver is more like a power managment which is > responsible for adjusting voltages and frequencies. > In my opinion, "devfreq" should be more suitable. > > Please correct me if my understanding is wrong. devfreq is a Linux mechanism, not a real device/hardware. We try to put the bindings in directories/subsystems matching the hardware, therefore devfreq is not appropriate. Whether interconnect - or other subsystem - is appropriate, I am not sure. To me this looks exactly like bus bandwidth management and you even use "interconnect" in several places. So interconnect matches. Best regards, Krzysztof