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=-2.0 required=3.0 tests=DKIM_INVALID,DKIM_SIGNED, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS, URIBL_BLOCKED,USER_AGENT_SANE_1 autolearn=no 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 C39C6C2D0E9 for ; Thu, 26 Mar 2020 09:22:34 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 9AAF1207FC for ; Thu, 26 Mar 2020 09:22:34 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=fail reason="signature verification failed" (1024-bit key) header.d=mg.codeaurora.org header.i=@mg.codeaurora.org header.b="NJYlOLGV" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727750AbgCZJWe (ORCPT ); Thu, 26 Mar 2020 05:22:34 -0400 Received: from mail27.static.mailgun.info ([104.130.122.27]:60831 "EHLO mail27.static.mailgun.info" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726359AbgCZJWd (ORCPT ); Thu, 26 Mar 2020 05:22:33 -0400 DKIM-Signature: a=rsa-sha256; v=1; c=relaxed/relaxed; d=mg.codeaurora.org; q=dns/txt; s=smtp; t=1585214553; h=Content-Transfer-Encoding: Content-Type: In-Reply-To: MIME-Version: Date: Message-ID: From: References: Cc: To: Subject: Sender; bh=+OwM0HqMP4AbODh5vasra9NtQ7vqt8/GPNduIzrrTlg=; b=NJYlOLGVg7eqmvWzJKmvgZb2t85grmoij27fNeTkuhWs4TfphXaWinfX86dlHFVXKwhaxbDM GRqn6F/GYSYksGIW1xy6q+9l5WciTl+77FiNy/DugpTJr1M4Fs/Y4aJX4yduwuHsXDZWf2y0 5u6pCR4JLZGH0lj98ZyylD709UY= X-Mailgun-Sending-Ip: 104.130.122.27 X-Mailgun-Sid: WyI1MzIzYiIsICJsaW51eC1hcm0tbXNtQHZnZXIua2VybmVsLm9yZyIsICJiZTllNGEiXQ== Received: from smtp.codeaurora.org (ec2-35-166-182-171.us-west-2.compute.amazonaws.com [35.166.182.171]) by mxa.mailgun.org with ESMTP id 5e7c7458.7fa94813c148-smtp-out-n02; Thu, 26 Mar 2020 09:22:32 -0000 (UTC) Received: by smtp.codeaurora.org (Postfix, from userid 1001) id 5A213C44788; Thu, 26 Mar 2020 09:22:32 +0000 (UTC) Received: from [192.168.0.103] (unknown [106.51.108.248]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) (Authenticated sender: rnayak) by smtp.codeaurora.org (Postfix) with ESMTPSA id 61490C433BA; Thu, 26 Mar 2020 09:22:25 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 smtp.codeaurora.org 61490C433BA Authentication-Results: aws-us-west-2-caf-mail-1.web.codeaurora.org; dmarc=none (p=none dis=none) header.from=codeaurora.org Authentication-Results: aws-us-west-2-caf-mail-1.web.codeaurora.org; spf=none smtp.mailfrom=rnayak@codeaurora.org Subject: Re: [RFC v6 0/2] Add SDHC interconnect bandwidth scaling To: Pradeep P V K , bjorn.andersson@linaro.org, adrian.hunter@intel.com, robh+dt@kernel.org, ulf.hansson@linaro.org, asutoshd@codeaurora.org, stummala@codeaurora.org, sayalil@codeaurora.org, rampraka@codeaurora.org, vbadigan@codeaurora.org, sboyd@kernel.org, georgi.djakov@linaro.org, mka@chromium.org Cc: linux-mmc@vger.kernel.org, linux-kernel@vger.kernel.org, linux-arm-msm@vger.kernel.org, devicetree@vger.kernel.org, agross@kernel.org, linux-mmc-owner@vger.kernel.org, Viresh Kumar , Saravana Kannan References: <1584973502-14775-1-git-send-email-ppvk@codeaurora.org> From: Rajendra Nayak Message-ID: Date: Thu, 26 Mar 2020 14:52:22 +0530 User-Agent: Mozilla/5.0 (Windows NT 10.0; WOW64; rv:68.0) Gecko/20100101 Thunderbird/68.6.0 MIME-Version: 1.0 In-Reply-To: <1584973502-14775-1-git-send-email-ppvk@codeaurora.org> Content-Type: text/plain; charset=utf-8; format=flowed Content-Language: en-US Content-Transfer-Encoding: 7bit Sender: linux-arm-msm-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-arm-msm@vger.kernel.org Adding Viresh and Saravana, On 3/23/2020 7:55 PM, Pradeep P V K wrote: > Add interconnect bandwidths for SDHC driver using OPP framework that > is required by SDHC driver based on the clock frequency and bus width > of the card. Otherwise, the system clocks may run at minimum clock > speed and thus affecting the performance. > > This change is based on > [RFC] mmc: host: sdhci-msm: Use the interconnect API > (https://lkml.org/lkml/2018/10/11/499) and > > [PATCH v6] Introduce Bandwidth OPPs for interconnects > (https://lkml.org/lkml/2019/12/6/740) Pradeep, since your series seems to depend on the above proposed bw bindings, can you post the DT changes for the platform that you are testing these patches on? Please note that the above series is currently deadlocked [1][2] with no clear path forward for now, so looking at how you plan to use this might throw some light onto the requirements [1] https://lkml.org/lkml/2020/1/14/511 [2] https://lkml.org/lkml/2020/3/20/106 > > Pradeep P V K (2): > mmc: sdhci-msm: Add interconnect bus bandwidth scaling support > dt-bindings: mmc: sdhci-msm: Add interconnect BW scaling strings > > .../devicetree/bindings/mmc/sdhci-msm.txt | 18 ++ > drivers/mmc/host/sdhci-msm.c | 240 ++++++++++++++++++++- > 2 files changed, 254 insertions(+), 4 deletions(-) > -- QUALCOMM INDIA, on behalf of Qualcomm Innovation Center, Inc. is a member of Code Aurora Forum, hosted by The Linux Foundation