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 DAB48C43217 for ; Wed, 2 Nov 2022 19:10:15 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230491AbiKBTKO (ORCPT ); Wed, 2 Nov 2022 15:10:14 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:38342 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231367AbiKBTJ6 (ORCPT ); Wed, 2 Nov 2022 15:09:58 -0400 Received: from mail-qt1-x833.google.com (mail-qt1-x833.google.com [IPv6:2607:f8b0:4864:20::833]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 8D9C8D102 for ; Wed, 2 Nov 2022 12:09:53 -0700 (PDT) Received: by mail-qt1-x833.google.com with SMTP id h21so6962112qtu.2 for ; Wed, 02 Nov 2022 12:09:53 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; h=content-transfer-encoding:in-reply-to:from:references:cc:to :content-language:subject:user-agent:mime-version:date:message-id :from:to:cc:subject:date:message-id:reply-to; bh=AIkEh7BXAQ8EfVcaCpQmqvlq6Pnzwaj79KpKIFXtqKk=; b=D5NqaoeFxXGLhUM1iiPWsSusfvacuFdAOm6V8ErMS9WTejX9G+7XNSYvAnzL10LFFp qE4b9Fd5IJns9Y169x8pYIfvEM0CEQ7UlfQ5ml7I2wQplpGk93Og//KQ6l66s2LeF7Ng 0QIQG2YvDP8l4BXttaBxEtpb+R11qglLFfU3r0tAVplqVAE9m+N5E+WLMYpPROr6YABD dDv1ZnUkW2HQDoRNxvZRD8RCgvwZFB7bKffmiB6fpEfwy093n055DP70XMYf0MNtGMTY cM6o2zeIscCb5OKxFh15wUhs+A2kcnIS8JdGXqbvwB/gsnlxMWnSn/3rzYMoDI8YAYem JlNA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=content-transfer-encoding:in-reply-to:from:references:cc:to :content-language:subject:user-agent:mime-version:date:message-id :x-gm-message-state:from:to:cc:subject:date:message-id:reply-to; bh=AIkEh7BXAQ8EfVcaCpQmqvlq6Pnzwaj79KpKIFXtqKk=; b=X0yZN0IJiMvPPrqibOS+X6Zm7Gmqt2Es8w7XczfDYjQShKSHuUsSBIH2ozwZWFYziQ 2UWl/hLtvJo2NUORbpMgDiODOBXXEwLkbG3BWfCvIZaRcAsAIzEotzccKtD3lfhGVwzD rc2i0FbP2FmU+yK2bZeK3kiEz2ZVMYE1GOuILACMDKo23rnuvXKMI41xW8yGlcECvmPX 8fUknrJ7Y8aM3UjrRld1hvtFDcHAJj3GeJPfiD4zxxYzdvMkKb+73NrohK2VjBfvtbP0 WrTrWttfieVRTPVAhAGMDY6jU1DiyXy3tlk1OjZkTYnK/kpDysVnx+P0NLyr6F3MMD4X xTfQ== X-Gm-Message-State: ACrzQf2D5VmlzzCLBB0tvIILYcpjTt4mlxvv7tLjRZIqbtzBQ4guWf0s GsjKYsweb6Ze9/GA/aCkKvSv6Q== X-Google-Smtp-Source: AMsMyM5rtL01pS0TQ+i5UNqkH3/BIoMq0q2RjMMZmpCfyVX3jZh1yBtxA1LpksWIIs0gVwKIiDmLaA== X-Received: by 2002:a05:622a:407:b0:39a:836:acfe with SMTP id n7-20020a05622a040700b0039a0836acfemr20925776qtx.133.1667416192736; Wed, 02 Nov 2022 12:09:52 -0700 (PDT) Received: from ?IPV6:2601:586:5000:570:28d9:4790:bc16:cc93? ([2601:586:5000:570:28d9:4790:bc16:cc93]) by smtp.gmail.com with ESMTPSA id bk20-20020a05620a1a1400b006f3e6933bacsm9098388qkb.113.2022.11.02.12.09.51 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Wed, 02 Nov 2022 12:09:52 -0700 (PDT) Message-ID: <1fe8fd96-7770-0bda-c970-aa38d030ff3b@linaro.org> Date: Wed, 2 Nov 2022 15:09:50 -0400 MIME-Version: 1.0 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:102.0) Gecko/20100101 Thunderbird/102.4.1 Subject: Re: [PATCH v2 06/15] dt-bindings: ufs: Add "max-device-gear" property for UFS device Content-Language: en-US To: Manivannan Sadhasivam , martin.petersen@oracle.com, jejb@linux.ibm.com, andersson@kernel.org, vkoul@kernel.org, krzysztof.kozlowski+dt@linaro.org Cc: konrad.dybcio@somainline.org, robh+dt@kernel.org, quic_cang@quicinc.com, linux-arm-msm@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-phy@lists.infradead.org, linux-scsi@vger.kernel.org, dmitry.baryshkov@linaro.org, ahalaney@redhat.com References: <20221031180217.32512-1-manivannan.sadhasivam@linaro.org> <20221031180217.32512-7-manivannan.sadhasivam@linaro.org> From: Krzysztof Kozlowski In-Reply-To: <20221031180217.32512-7-manivannan.sadhasivam@linaro.org> Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit Precedence: bulk List-ID: X-Mailing-List: devicetree@vger.kernel.org On 31/10/2022 14:02, Manivannan Sadhasivam wrote: > The maximum gear supported by the UFS device can be specified using the > "max-device-gear" property. This allows the UFS controller to configure the > TX/RX gear before starting communication with the UFS device. This is confusing. The UFS PHY provides gear capability, so what is the "device" here? The attached memory? How could it report something else than phy? The last sentence also suggests that you statically encode gear to avoid runtime negotiation. Best regards, Krzysztof