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 A44A1C3DA6F for ; Fri, 25 Aug 2023 09:18:49 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232795AbjHYJSR (ORCPT ); Fri, 25 Aug 2023 05:18:17 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:34852 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230183AbjHYJRs (ORCPT ); Fri, 25 Aug 2023 05:17:48 -0400 Received: from mail-m11880.qiye.163.com (mail-m11880.qiye.163.com [115.236.118.80]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 9F5BB1FC3; Fri, 25 Aug 2023 02:17:45 -0700 (PDT) Received: from [172.16.12.69] (unknown [58.22.7.114]) by mail-m11880.qiye.163.com (Hmail) with ESMTPA id 1755920328; Fri, 25 Aug 2023 17:17:34 +0800 (CST) Message-ID: <769a67cb-1b32-fd4f-b37e-e3ec4dab5eb9@rock-chips.com> Date: Fri, 25 Aug 2023 17:17:34 +0800 MIME-Version: 1.0 User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:102.0) Gecko/20100101 Thunderbird/102.14.0 Cc: shawn.lin@rock-chips.com, angelogioacchino.delregno@collabora.com, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, linux-mediatek@lists.infradead.org, linux-mmc@vger.kernel.org, matthias.bgg@gmail.com, ulf.hansson@linaro.org, wsd_upstream@mediatek.com Subject: Re: [PATCH 1/1] mmc: Set optimal I/O size when mmc_setip_queue Content-Language: en-GB To: Sharp.Xia@mediatek.com References: <20230825083918.24334-1-Sharp.Xia@mediatek.com> From: Shawn Lin In-Reply-To: <20230825083918.24334-1-Sharp.Xia@mediatek.com> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit X-HM-Spam-Status: e1kfGhgUHx5ZQUpXWQgPGg8OCBgUHx5ZQUlOS1dZFg8aDwILHllBWSg2Ly tZV1koWUFDSUNOT01LS0k3V1ktWUFJV1kPCRoVCBIfWUFZQxlLTlYfSk4dSB9CH0lMHkxVEwETFh oSFyQUDg9ZV1kYEgtZQVlOQ1VJSVVMVUpKT1lXWRYaDxIVHRRZQVlPS0hVSk1PSUxOVUpLS1VKQk tLWQY+ X-HM-Tid: 0a8a2bfc111e2eb6kusn1755920328 X-HM-MType: 1 X-HM-Sender-Digest: e1kMHhlZQR0aFwgeV1kSHx4VD1lBWUc6PVE6Mzo*TD1CMz8rGj8PCx5P CktPCwpVSlVKTUJJQk5OS05PQk1PVTMWGhIXVQgTGgwVVRcSFTsJFBgQVhgTEgsIVRgUFkVZV1kS C1lBWU5DVUlJVUxVSkpPWVdZCAFZQUlPT003Bg++ Precedence: bulk List-ID: X-Mailing-List: linux-mmc@vger.kernel.org On 2023/8/25 16:39, Sharp.Xia@mediatek.com wrote: > On Fri, 2023-08-25 at 16:11 +0800, Shawn Lin wrote: >> >> Hi Sharp, ... >>> 1024 >>> > Hi Shawn, > > What is your readahead value before and after applying this patch? > The original readahead is 128, and after applying the patch is 1024 cat /d/mmc0/ios clock: 200000000 Hz actual clock: 200000000 Hz vdd: 18 (3.0 ~ 3.1 V) bus mode: 2 (push-pull) chip select: 0 (don't care) power mode: 2 (on) bus width: 3 (8 bits) timing spec: 10 (mmc HS400 enhanced strobe) signal voltage: 1 (1.80 V) driver type: 0 (driver type B) The driver I used is sdhci-of-dwcmshc.c with a KLMBG2JETDB041 eMMC chip.